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chromium/chromium-92.0.4515.107-update-highway-0.12.2.patch
Tom spot Callaway c3fea07699 92.0.4515.107
2021-07-26 22:30:10 -04:00

4200 lines
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diff -up chromium-92.0.4515.107/third_party/highway/src/CMakeLists.txt.in.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/CMakeLists.txt.in
diff -up chromium-92.0.4515.107/third_party/highway/src/CMakeLists.txt.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/CMakeLists.txt
--- chromium-92.0.4515.107/third_party/highway/src/CMakeLists.txt.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/CMakeLists.txt 2021-07-26 17:13:36.158002603 -0400
@@ -19,7 +19,7 @@ if(POLICY CMP0083)
cmake_policy(SET CMP0083 NEW)
endif()
-project(hwy VERSION 0.1)
+project(hwy VERSION 0.12.2) # Keep in sync with highway.h version
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_EXTENSIONS OFF)
@@ -40,6 +40,8 @@ if (NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE RelWithDebInfo)
endif()
+set(HWY_CMAKE_ARM7 OFF CACHE BOOL "Set copts for ARMv7 with NEON?")
+
include(CheckCXXSourceCompiles)
check_cxx_source_compiles(
"int main() {
@@ -51,10 +53,13 @@ check_cxx_source_compiles(
HWY_EMSCRIPTEN
)
+set(HWY_CONTRIB_SOURCES
+ hwy/contrib/image/image.cc
+ hwy/contrib/image/image.h
+ hwy/contrib/math/math-inl.h
+)
+
set(HWY_SOURCES
- contrib/image/image.cc
- contrib/image/image.h
- contrib/math/math-inl.h
hwy/aligned_allocator.cc
hwy/aligned_allocator.h
hwy/base.h
@@ -64,6 +69,7 @@ set(HWY_SOURCES
hwy/nanobenchmark.cc
hwy/nanobenchmark.h
hwy/ops/arm_neon-inl.h
+ hwy/ops/arm_sve-inl.h
hwy/ops/scalar-inl.h
hwy/ops/set_macros-inl.h
hwy/ops/shared-inl.h
@@ -146,13 +152,28 @@ else()
-fno-exceptions
)
endif()
-endif()
+
+ if (HWY_CMAKE_ARM7)
+ list(APPEND HWY_FLAGS
+ -march=armv7-a
+ -mfpu=neon-vfpv4
+ -mfloat-abi=hard # must match the toolchain specified as CXX=
+ -mfp16-format=ieee # required for vcvt_f32_f16
+ )
+ endif() # HWY_CMAKE_ARM7
+
+endif() # !MSVC
add_library(hwy STATIC ${HWY_SOURCES})
target_compile_options(hwy PRIVATE ${HWY_FLAGS})
set_property(TARGET hwy PROPERTY POSITION_INDEPENDENT_CODE ON)
target_include_directories(hwy PUBLIC ${CMAKE_CURRENT_LIST_DIR})
+add_library(hwy_contrib STATIC ${HWY_CONTRIB_SOURCES})
+target_compile_options(hwy_contrib PRIVATE ${HWY_FLAGS})
+set_property(TARGET hwy_contrib PROPERTY POSITION_INDEPENDENT_CODE ON)
+target_include_directories(hwy_contrib PUBLIC ${CMAKE_CURRENT_LIST_DIR})
+
# -------------------------------------------------------- install library
install(TARGETS hwy
DESTINATION "${CMAKE_INSTALL_LIBDIR}")
@@ -166,9 +187,21 @@ foreach (source ${HWY_SOURCES})
endif()
endforeach()
-# Add a pkg-config file for libhwy and the test library.
+install(TARGETS hwy_contrib
+ DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+# Install all the headers keeping the relative path to the current directory
+# when installing them.
+foreach (source ${HWY_CONTRIB_SOURCES})
+ if ("${source}" MATCHES "\.h$")
+ get_filename_component(dirname "${source}" DIRECTORY)
+ install(FILES "${source}"
+ DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${dirname}")
+ endif()
+endforeach()
+
+# Add a pkg-config file for libhwy and the contrib/test libraries.
set(HWY_LIBRARY_VERSION "${CMAKE_PROJECT_VERSION}")
-foreach (pc libhwy.pc libhwy-test.pc)
+foreach (pc libhwy.pc libhwy-contrib.pc libhwy-test.pc)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/${pc}.in" "${pc}" @ONLY)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${pc}"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
@@ -251,8 +284,8 @@ endif()
endif() # HWY_SYSTEM_GTEST
set(HWY_TEST_FILES
- contrib/image/image_test.cc
- # contrib/math/math_test.cc
+ hwy/contrib/image/image_test.cc
+ # hwy/contrib/math/math_test.cc
hwy/aligned_allocator_test.cc
hwy/base_test.cc
hwy/highway_test.cc
@@ -274,11 +307,16 @@ foreach (TESTFILE IN LISTS HWY_TEST_FILE
get_filename_component(TESTNAME ${TESTFILE} NAME_WE)
add_executable(${TESTNAME} ${TESTFILE})
target_compile_options(${TESTNAME} PRIVATE ${HWY_FLAGS})
+ # Test all targets, not just the best/baseline. This changes the default
+ # policy to all-attainable; note that setting -DHWY_COMPILE_* directly can
+ # cause compile errors because only one may be set, and other CMakeLists.txt
+ # that include us may set them.
+ target_compile_options(${TESTNAME} PRIVATE -DHWY_IS_TEST=1)
if(HWY_SYSTEM_GTEST)
- target_link_libraries(${TESTNAME} hwy GTest::GTest GTest::Main)
+ target_link_libraries(${TESTNAME} hwy hwy_contrib GTest::GTest GTest::Main)
else()
- target_link_libraries(${TESTNAME} hwy gtest gtest_main)
+ target_link_libraries(${TESTNAME} hwy hwy_contrib gtest gtest_main)
endif()
# Output test targets in the test directory.
set_target_properties(${TESTNAME} PROPERTIES PREFIX "tests/")
diff -up chromium-92.0.4515.107/third_party/highway/src/debian/changelog.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/debian/changelog
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/aligned_allocator.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/aligned_allocator.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/aligned_allocator.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/aligned_allocator.h 2021-07-26 17:15:37.281847484 -0400
@@ -111,6 +111,32 @@ AlignedUniquePtr<T> MakeUniqueAligned(Ar
new (ptr) T(std::forward<Args>(args)...), AlignedDeleter());
}
+// Helpers for array allocators (avoids overflow)
+namespace detail {
+
+// Returns x such that 1u << x == n (if n is a power of two).
+static inline constexpr size_t ShiftCount(size_t n) {
+ return (n <= 1) ? 0 : 1 + ShiftCount(n / 2);
+}
+
+template <typename T>
+T* AllocateAlignedItems(size_t items, AllocPtr alloc_ptr, void* opaque_ptr) {
+ constexpr size_t size = sizeof(T);
+
+ constexpr bool is_pow2 = (size & (size - 1)) == 0;
+ constexpr size_t bits = ShiftCount(size);
+ static_assert(!is_pow2 || (1ull << bits) == size, "ShiftCount is incorrect");
+
+ const size_t bytes = is_pow2 ? items << bits : items * size;
+ const size_t check = is_pow2 ? bytes >> bits : bytes / size;
+ if (check != items) {
+ return nullptr; // overflowed
+ }
+ return static_cast<T*>(AllocateAlignedBytes(bytes, alloc_ptr, opaque_ptr));
+}
+
+} // namespace detail
+
// Aligned memory equivalent of make_unique<T[]> for array types using the
// custom allocators alloc/free. This function calls the constructor with the
// passed Args... on every created item. The destructor of each element will be
@@ -118,10 +144,11 @@ AlignedUniquePtr<T> MakeUniqueAligned(Ar
template <typename T, typename... Args>
AlignedUniquePtr<T[]> MakeUniqueAlignedArrayWithAlloc(
size_t items, AllocPtr alloc, FreePtr free, void* opaque, Args&&... args) {
- T* ptr =
- static_cast<T*>(AllocateAlignedBytes(items * sizeof(T), alloc, opaque));
- for (size_t i = 0; i < items; i++) {
- new (ptr + i) T(std::forward<Args>(args)...);
+ T* ptr = detail::AllocateAlignedItems<T>(items, alloc, opaque);
+ if (ptr != nullptr) {
+ for (size_t i = 0; i < items; i++) {
+ new (ptr + i) T(std::forward<Args>(args)...);
+ }
}
return AlignedUniquePtr<T[]>(ptr, AlignedDeleter(free, opaque));
}
@@ -165,7 +192,7 @@ template <typename T>
AlignedFreeUniquePtr<T[]> AllocateAligned(const size_t items, AllocPtr alloc,
FreePtr free, void* opaque) {
return AlignedFreeUniquePtr<T[]>(
- static_cast<T*>(AllocateAlignedBytes(items * sizeof(T), alloc, opaque)),
+ detail::AllocateAlignedItems<T>(items, alloc, opaque),
AlignedFreer(free, opaque));
}
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/aligned_allocator_test.cc.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/aligned_allocator_test.cc
--- chromium-92.0.4515.107/third_party/highway/src/hwy/aligned_allocator_test.cc.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/aligned_allocator_test.cc 2021-07-26 17:16:43.672858709 -0400
@@ -16,6 +16,7 @@
#include <stddef.h>
+#include <array>
#include <new>
#include <random>
#include <vector>
@@ -87,6 +88,32 @@ TEST(AlignedAllocatorTest, FreeNullptr)
/*opaque_ptr=*/nullptr);
}
+TEST(AlignedAllocatorTest, Log2) {
+ EXPECT_EQ(0u, detail::ShiftCount(1));
+ EXPECT_EQ(1u, detail::ShiftCount(2));
+ EXPECT_EQ(3u, detail::ShiftCount(8));
+}
+
+// Allocator returns null when it detects overflow of items * sizeof(T).
+TEST(AlignedAllocatorTest, Overflow) {
+ constexpr size_t max = ~size_t(0);
+ constexpr size_t msb = (max >> 1) + 1;
+ using Size5 = std::array<uint8_t, 5>;
+ using Size10 = std::array<uint8_t, 10>;
+ EXPECT_EQ(nullptr,
+ detail::AllocateAlignedItems<uint32_t>(max / 2, nullptr, nullptr));
+ EXPECT_EQ(nullptr,
+ detail::AllocateAlignedItems<uint32_t>(max / 3, nullptr, nullptr));
+ EXPECT_EQ(nullptr,
+ detail::AllocateAlignedItems<Size5>(max / 4, nullptr, nullptr));
+ EXPECT_EQ(nullptr,
+ detail::AllocateAlignedItems<uint16_t>(msb, nullptr, nullptr));
+ EXPECT_EQ(nullptr,
+ detail::AllocateAlignedItems<double>(msb + 1, nullptr, nullptr));
+ EXPECT_EQ(nullptr,
+ detail::AllocateAlignedItems<Size10>(msb / 4, nullptr, nullptr));
+}
+
TEST(AlignedAllocatorTest, AllocDefaultPointers) {
const size_t kSize = 7777;
void* ptr = AllocateAlignedBytes(kSize, /*alloc_ptr=*/nullptr,
@@ -215,7 +242,8 @@ TEST(AlignedAllocatorTest, MakeUniqueAli
auto arr = MakeUniqueAlignedArrayWithAlloc<SampleObject<24>>(
7, FakeAllocator::StaticAlloc, FakeAllocator::StaticFree, &fake_alloc,
&counter);
- // An array shold still only call a single allocation.
+ ASSERT_NE(nullptr, arr.get());
+ // An array should still only call a single allocation.
EXPECT_EQ(1u, fake_alloc.PendingAllocs());
EXPECT_EQ(7, counter);
for (size_t i = 0; i < 7; i++) {
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/base.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/base.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/base.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/base.h 2021-07-26 17:16:04.753265910 -0400
@@ -203,6 +203,10 @@
#define HWY_ARCH_X86_64 0
#endif
+#if HWY_ARCH_X86_32 && HWY_ARCH_X86_64
+#error "Cannot have both x86-32 and x86-64"
+#endif
+
#if HWY_ARCH_X86_32 || HWY_ARCH_X86_64
#define HWY_ARCH_X86 1
#else
@@ -249,9 +253,11 @@
#define HWY_ARCH_RVV 0
#endif
+// It is an error to detect multiple architectures at the same time, but OK to
+// detect none of the above.
#if (HWY_ARCH_X86 + HWY_ARCH_PPC + HWY_ARCH_ARM + HWY_ARCH_WASM + \
- HWY_ARCH_RVV) != 1
-#error "Must detect exactly one platform"
+ HWY_ARCH_RVV) > 1
+#error "Must not detect more than one architecture"
#endif
//------------------------------------------------------------------------------
@@ -328,6 +334,12 @@ static constexpr HWY_MAYBE_UNUSED size_t
// RVV already has a builtin type and the GCC intrinsics require it.
#if HWY_ARCH_RVV && HWY_COMPILER_GCC
+#define HWY_NATIVE_FLOAT16 1
+#else
+#define HWY_NATIVE_FLOAT16 0
+#endif
+
+#if HWY_NATIVE_FLOAT16
using float16_t = __fp16;
// Clang does not allow __fp16 arguments, but scalar.h requires LaneType
// arguments, so use a wrapper.
@@ -597,7 +609,7 @@ HWY_API size_t PopCount(uint64_t x) {
return static_cast<size_t>(__builtin_popcountll(x));
#elif HWY_COMPILER_MSVC && HWY_ARCH_X86_64
return _mm_popcnt_u64(x);
-#elif HWY_COMPILER_MSVC
+#elif HWY_COMPILER_MSVC && HWY_ARCH_X86_32
return _mm_popcnt_u32(uint32_t(x)) + _mm_popcnt_u32(uint32_t(x >> 32));
#else
x -= ((x >> 1) & 0x55555555U);
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/cache_control.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/cache_control.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/cache_control.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/cache_control.h 2021-07-26 17:16:26.004589594 -0400
@@ -32,6 +32,14 @@
#include <emmintrin.h> // SSE2
#endif
+// Windows.h #defines these, which causes infinite recursion. Temporarily
+// undefine them in this header; these functions are anyway deprecated.
+// TODO(janwas): remove when these functions are removed.
+#pragma push_macro("LoadFence")
+#pragma push_macro("StoreFence")
+#undef LoadFence
+#undef StoreFence
+
namespace hwy {
// Even if N*sizeof(T) is smaller, Stream may write a multiple of this size.
@@ -83,6 +91,17 @@ HWY_INLINE HWY_ATTR_CACHE void FlushCach
#endif
}
+// Reduces power consumption in spin-loops. No effect on non-x86.
+HWY_INLINE HWY_ATTR_CACHE void Pause() {
+#if HWY_ARCH_X86 && !defined(HWY_DISABLE_CACHE_CONTROL)
+ _mm_pause();
+#endif
+}
+
} // namespace hwy
+// TODO(janwas): remove when these functions are removed. (See above.)
+#pragma pop_macro("StoreFence")
+#pragma pop_macro("LoadFence")
+
#endif // HIGHWAY_HWY_CACHE_CONTROL_H_
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/examples/skeleton.cc.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/examples/skeleton.cc
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/examples/skeleton_test.cc.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/examples/skeleton_test.cc
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/highway.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/highway.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/highway.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/highway.h 2021-07-26 17:16:58.109078590 -0400
@@ -25,10 +25,10 @@
namespace hwy {
-// API version (https://semver.org/)
+// API version (https://semver.org/); keep in sync with CMakeLists.txt.
#define HWY_MAJOR 0
#define HWY_MINOR 12
-#define HWY_PATCH 0
+#define HWY_PATCH 2
//------------------------------------------------------------------------------
// Shorthand for descriptors (defined in shared-inl.h) used to select overloads.
@@ -49,7 +49,7 @@ namespace hwy {
HWY_FULL_RECOMPOSER((__VA_ARGS__, HWY_FULL2, HWY_FULL1, ))
#define HWY_FULL(...) HWY_CHOOSE_FULL(__VA_ARGS__())(__VA_ARGS__)
-// Vector of up to MAX_N lanes.
+// Vector of up to MAX_N lanes. Discouraged, when possible, use Half<> instead.
#define HWY_CAPPED(T, MAX_N) \
hwy::HWY_NAMESPACE::Simd<T, HWY_MIN(MAX_N, HWY_LANES(T))>
@@ -75,6 +75,10 @@ namespace hwy {
#define HWY_STATIC_DISPATCH(FUNC_NAME) N_WASM::FUNC_NAME
#elif HWY_STATIC_TARGET == HWY_NEON
#define HWY_STATIC_DISPATCH(FUNC_NAME) N_NEON::FUNC_NAME
+#elif HWY_STATIC_TARGET == HWY_SVE
+#define HWY_STATIC_DISPATCH(FUNC_NAME) N_SVE::FUNC_NAME
+#elif HWY_STATIC_TARGET == HWY_SVE2
+#define HWY_STATIC_DISPATCH(FUNC_NAME) N_SVE2::FUNC_NAME
#elif HWY_STATIC_TARGET == HWY_PPC8
#define HWY_STATIC_DISPATCH(FUNC_NAME) N_PPC8::FUNC_NAME
#elif HWY_STATIC_TARGET == HWY_SSE4
@@ -143,6 +147,18 @@ FunctionCache<RetType, Args...> Function
#define HWY_CHOOSE_NEON(FUNC_NAME) nullptr
#endif
+#if HWY_TARGETS & HWY_SVE
+#define HWY_CHOOSE_SVE(FUNC_NAME) &N_SVE::FUNC_NAME
+#else
+#define HWY_CHOOSE_SVE(FUNC_NAME) nullptr
+#endif
+
+#if HWY_TARGETS & HWY_SVE2
+#define HWY_CHOOSE_SVE2(FUNC_NAME) &N_SVE2::FUNC_NAME
+#else
+#define HWY_CHOOSE_SVE2(FUNC_NAME) nullptr
+#endif
+
#if HWY_TARGETS & HWY_PPC8
#define HWY_CHOOSE_PCC8(FUNC_NAME) &N_PPC8::FUNC_NAME
#else
@@ -261,8 +277,11 @@ FunctionCache<RetType, Args...> Function
#elif HWY_TARGET == HWY_AVX3
#include "hwy/ops/x86_512-inl.h"
#elif HWY_TARGET == HWY_PPC8
+#error "PPC is not yet supported"
#elif HWY_TARGET == HWY_NEON
#include "hwy/ops/arm_neon-inl.h"
+#elif HWY_TARGET == HWY_SVE || HWY_TARGET == HWY_SVE2
+#include "hwy/ops/arm_sve-inl.h"
#elif HWY_TARGET == HWY_WASM
#include "hwy/ops/wasm_128-inl.h"
#elif HWY_TARGET == HWY_RVV
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark.cc.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark.cc
--- chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark.cc.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark.cc 2021-07-26 17:17:12.094291603 -0400
@@ -29,6 +29,22 @@
#include <string>
#include <vector>
+#if defined(_WIN32) || defined(_WIN64)
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif // NOMINMAX
+#include <windows.h>
+#endif
+
+#if defined(__MACH__)
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#endif
+
+#if defined(__HAIKU__)
+#include <OS.h>
+#endif
+
#include "hwy/base.h"
#if HWY_ARCH_PPC
#include <sys/platform/ppc.h> // NOLINT __ppc_get_timebase_freq
@@ -43,114 +59,13 @@
#endif // HWY_ARCH_X86
namespace hwy {
-namespace platform {
namespace {
-
-#if HWY_ARCH_X86
-
-void Cpuid(const uint32_t level, const uint32_t count,
- uint32_t* HWY_RESTRICT abcd) {
-#if HWY_COMPILER_MSVC
- int regs[4];
- __cpuidex(regs, level, count);
- for (int i = 0; i < 4; ++i) {
- abcd[i] = regs[i];
- }
-#else
- uint32_t a;
- uint32_t b;
- uint32_t c;
- uint32_t d;
- __cpuid_count(level, count, a, b, c, d);
- abcd[0] = a;
- abcd[1] = b;
- abcd[2] = c;
- abcd[3] = d;
-#endif
-}
-
-std::string BrandString() {
- char brand_string[49];
- std::array<uint32_t, 4> abcd;
-
- // Check if brand string is supported (it is on all reasonable Intel/AMD)
- Cpuid(0x80000000U, 0, abcd.data());
- if (abcd[0] < 0x80000004U) {
- return std::string();
- }
-
- for (size_t i = 0; i < 3; ++i) {
- Cpuid(static_cast<uint32_t>(0x80000002U + i), 0, abcd.data());
- memcpy(brand_string + i * 16, abcd.data(), sizeof(abcd));
- }
- brand_string[48] = 0;
- return brand_string;
-}
-
-// Returns the frequency quoted inside the brand string. This does not
-// account for throttling nor Turbo Boost.
-double NominalClockRate() {
- const std::string& brand_string = BrandString();
- // Brand strings include the maximum configured frequency. These prefixes are
- // defined by Intel CPUID documentation.
- const char* prefixes[3] = {"MHz", "GHz", "THz"};
- const double multipliers[3] = {1E6, 1E9, 1E12};
- for (size_t i = 0; i < 3; ++i) {
- const size_t pos_prefix = brand_string.find(prefixes[i]);
- if (pos_prefix != std::string::npos) {
- const size_t pos_space = brand_string.rfind(' ', pos_prefix - 1);
- if (pos_space != std::string::npos) {
- const std::string digits =
- brand_string.substr(pos_space + 1, pos_prefix - pos_space - 1);
- return std::stod(digits) * multipliers[i];
- }
- }
- }
-
- return 0.0;
-}
-
-#endif // HWY_ARCH_X86
-
-} // namespace
-
-// Returns tick rate. Invariant means the tick counter frequency is independent
-// of CPU throttling or sleep. May be expensive, caller should cache the result.
-double InvariantTicksPerSecond() {
-#if HWY_ARCH_PPC
- return __ppc_get_timebase_freq();
-#elif HWY_ARCH_X86
- // We assume the TSC is invariant; it is on all recent Intel/AMD CPUs.
- return NominalClockRate();
-#else
- // Fall back to clock_gettime nanoseconds.
- return 1E9;
-#endif
-}
-
-} // namespace platform
-namespace {
-
-// Prevents the compiler from eliding the computations that led to "output".
-template <class T>
-inline void PreventElision(T&& output) {
-#if HWY_COMPILER_MSVC == 0
- // Works by indicating to the compiler that "output" is being read and
- // modified. The +r constraint avoids unnecessary writes to memory, but only
- // works for built-in types (typically FuncOutput).
- asm volatile("" : "+r"(output) : : "memory");
-#else
- // MSVC does not support inline assembly anymore (and never supported GCC's
- // RTL constraints). Self-assignment with #pragma optimize("off") might be
- // expected to prevent elision, but it does not with MSVC 2015. Type-punning
- // with volatile pointers generates inefficient code on MSVC 2017.
- static std::atomic<T> dummy(T{});
- dummy.store(output, std::memory_order_relaxed);
-#endif
-}
-
namespace timer {
+// Ticks := platform-specific timer values (CPU cycles on x86). Must be
+// unsigned to guarantee wraparound on overflow.
+using Ticks = uint64_t;
+
// Start/Stop return absolute timestamps and must be placed immediately before
// and after the region to measure. We provide separate Start/Stop functions
// because they use different fences.
@@ -202,8 +117,8 @@ namespace timer {
// Returns a 64-bit timestamp in unit of 'ticks'; to convert to seconds,
// divide by InvariantTicksPerSecond.
-inline uint64_t Start64() {
- uint64_t t;
+inline Ticks Start() {
+ Ticks t;
#if HWY_ARCH_PPC
asm volatile("mfspr %0, %1" : "=r"(t) : "i"(268));
#elif HWY_ARCH_X86 && HWY_COMPILER_MSVC
@@ -228,8 +143,15 @@ inline uint64_t Start64() {
: "rdx", "memory", "cc");
#elif HWY_ARCH_RVV
asm volatile("rdcycle %0" : "=r"(t));
-#else
- // Fall back to OS - unsure how to reliably query cntvct_el0 frequency.
+#elif defined(_WIN32) || defined(_WIN64)
+ LARGE_INTEGER counter;
+ (void)QueryPerformanceCounter(&counter);
+ t = counter.QuadPart;
+#elif defined(__MACH__)
+ t = mach_absolute_time();
+#elif defined(__HAIKU__)
+ t = system_time_nsecs(); // since boot
+#else // POSIX
timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
t = ts.tv_sec * 1000000000LL + ts.tv_nsec;
@@ -237,7 +159,7 @@ inline uint64_t Start64() {
return t;
}
-inline uint64_t Stop64() {
+inline Ticks Stop() {
uint64_t t;
#if HWY_ARCH_PPC
asm volatile("mfspr %0, %1" : "=r"(t) : "i"(268));
@@ -261,61 +183,7 @@ inline uint64_t Stop64() {
// "cc" = flags modified by SHL.
: "rcx", "rdx", "memory", "cc");
#else
- t = Start64();
-#endif
- return t;
-}
-
-// Returns a 32-bit timestamp with about 4 cycles less overhead than
-// Start64. Only suitable for measuring very short regions because the
-// timestamp overflows about once a second.
-inline uint32_t Start32() {
- uint32_t t;
-#if HWY_ARCH_X86 && HWY_COMPILER_MSVC
- _ReadWriteBarrier();
- _mm_lfence();
- _ReadWriteBarrier();
- t = static_cast<uint32_t>(__rdtsc());
- _ReadWriteBarrier();
- _mm_lfence();
- _ReadWriteBarrier();
-#elif HWY_ARCH_X86_64
- asm volatile(
- "lfence\n\t"
- "rdtsc\n\t"
- "lfence"
- : "=a"(t)
- :
- // "memory" avoids reordering. rdx = TSC >> 32.
- : "rdx", "memory");
-#elif HWY_ARCH_RVV
- asm volatile("rdcycle %0" : "=r"(t));
-#else
- t = static_cast<uint32_t>(Start64());
-#endif
- return t;
-}
-
-inline uint32_t Stop32() {
- uint32_t t;
-#if HWY_ARCH_X86 && HWY_COMPILER_MSVC
- _ReadWriteBarrier();
- unsigned aux;
- t = static_cast<uint32_t>(__rdtscp(&aux));
- _ReadWriteBarrier();
- _mm_lfence();
- _ReadWriteBarrier();
-#elif HWY_ARCH_X86_64
- // Use inline asm because __rdtscp generates code to store TSC_AUX (ecx).
- asm volatile(
- "rdtscp\n\t"
- "lfence"
- : "=a"(t)
- :
- // "memory" avoids reordering. rcx = TSC_AUX. rdx = TSC >> 32.
- : "rcx", "rdx", "memory");
-#else
- t = static_cast<uint32_t>(Stop64());
+ t = Start();
#endif
return t;
}
@@ -440,21 +308,130 @@ T MedianAbsoluteDeviation(const T* value
}
} // namespace robust_statistics
+} // namespace
+namespace platform {
+namespace {
-// Ticks := platform-specific timer values (CPU cycles on x86). Must be
-// unsigned to guarantee wraparound on overflow. 32 bit timers are faster to
-// read than 64 bit.
-using Ticks = uint32_t;
+// Prevents the compiler from eliding the computations that led to "output".
+template <class T>
+inline void PreventElision(T&& output) {
+#if HWY_COMPILER_MSVC == 0
+ // Works by indicating to the compiler that "output" is being read and
+ // modified. The +r constraint avoids unnecessary writes to memory, but only
+ // works for built-in types (typically FuncOutput).
+ asm volatile("" : "+r"(output) : : "memory");
+#else
+ // MSVC does not support inline assembly anymore (and never supported GCC's
+ // RTL constraints). Self-assignment with #pragma optimize("off") might be
+ // expected to prevent elision, but it does not with MSVC 2015. Type-punning
+ // with volatile pointers generates inefficient code on MSVC 2017.
+ static std::atomic<T> dummy(T{});
+ dummy.store(output, std::memory_order_relaxed);
+#endif
+}
+
+#if HWY_ARCH_X86
+
+void Cpuid(const uint32_t level, const uint32_t count,
+ uint32_t* HWY_RESTRICT abcd) {
+#if HWY_COMPILER_MSVC
+ int regs[4];
+ __cpuidex(regs, level, count);
+ for (int i = 0; i < 4; ++i) {
+ abcd[i] = regs[i];
+ }
+#else
+ uint32_t a;
+ uint32_t b;
+ uint32_t c;
+ uint32_t d;
+ __cpuid_count(level, count, a, b, c, d);
+ abcd[0] = a;
+ abcd[1] = b;
+ abcd[2] = c;
+ abcd[3] = d;
+#endif
+}
+
+std::string BrandString() {
+ char brand_string[49];
+ std::array<uint32_t, 4> abcd;
+
+ // Check if brand string is supported (it is on all reasonable Intel/AMD)
+ Cpuid(0x80000000U, 0, abcd.data());
+ if (abcd[0] < 0x80000004U) {
+ return std::string();
+ }
+
+ for (size_t i = 0; i < 3; ++i) {
+ Cpuid(static_cast<uint32_t>(0x80000002U + i), 0, abcd.data());
+ memcpy(brand_string + i * 16, abcd.data(), sizeof(abcd));
+ }
+ brand_string[48] = 0;
+ return brand_string;
+}
+
+// Returns the frequency quoted inside the brand string. This does not
+// account for throttling nor Turbo Boost.
+double NominalClockRate() {
+ const std::string& brand_string = BrandString();
+ // Brand strings include the maximum configured frequency. These prefixes are
+ // defined by Intel CPUID documentation.
+ const char* prefixes[3] = {"MHz", "GHz", "THz"};
+ const double multipliers[3] = {1E6, 1E9, 1E12};
+ for (size_t i = 0; i < 3; ++i) {
+ const size_t pos_prefix = brand_string.find(prefixes[i]);
+ if (pos_prefix != std::string::npos) {
+ const size_t pos_space = brand_string.rfind(' ', pos_prefix - 1);
+ if (pos_space != std::string::npos) {
+ const std::string digits =
+ brand_string.substr(pos_space + 1, pos_prefix - pos_space - 1);
+ return std::stod(digits) * multipliers[i];
+ }
+ }
+ }
+
+ return 0.0;
+}
+
+#endif // HWY_ARCH_X86
+
+} // namespace
+
+double InvariantTicksPerSecond() {
+#if HWY_ARCH_PPC
+ return __ppc_get_timebase_freq();
+#elif HWY_ARCH_X86
+ // We assume the TSC is invariant; it is on all recent Intel/AMD CPUs.
+ return NominalClockRate();
+#elif defined(_WIN32) || defined(_WIN64)
+ LARGE_INTEGER freq;
+ (void)QueryPerformanceFrequency(&freq);
+ return double(freq.QuadPart);
+#elif defined(__MACH__)
+ // https://developer.apple.com/library/mac/qa/qa1398/_index.html
+ mach_timebase_info_data_t timebase;
+ (void)mach_timebase_info(&timebase);
+ return double(timebase.denom) / timebase.numer * 1E9;
+#else
+ // TODO(janwas): ARM? Unclear how to reliably query cntvct_el0 frequency.
+ return 1E9; // Haiku and clock_gettime return nanoseconds.
+#endif
+}
-// Returns timer overhead / minimum measurable difference.
-Ticks TimerResolution() {
+double Now() {
+ static const double mul = 1.0 / InvariantTicksPerSecond();
+ return static_cast<double>(timer::Start()) * mul;
+}
+
+uint64_t TimerResolution() {
// Nested loop avoids exceeding stack/L1 capacity.
- Ticks repetitions[Params::kTimerSamples];
+ timer::Ticks repetitions[Params::kTimerSamples];
for (size_t rep = 0; rep < Params::kTimerSamples; ++rep) {
- Ticks samples[Params::kTimerSamples];
+ timer::Ticks samples[Params::kTimerSamples];
for (size_t i = 0; i < Params::kTimerSamples; ++i) {
- const Ticks t0 = timer::Start32();
- const Ticks t1 = timer::Stop32();
+ const timer::Ticks t0 = timer::Start();
+ const timer::Ticks t1 = timer::Stop();
samples[i] = t1 - t0;
}
repetitions[rep] = robust_statistics::Mode(samples);
@@ -462,18 +439,21 @@ Ticks TimerResolution() {
return robust_statistics::Mode(repetitions);
}
-static const Ticks timer_resolution = TimerResolution();
+} // namespace platform
+namespace {
+
+static const timer::Ticks timer_resolution = platform::TimerResolution();
// Estimates the expected value of "lambda" values with a variable number of
// samples until the variability "rel_mad" is less than "max_rel_mad".
template <class Lambda>
-Ticks SampleUntilStable(const double max_rel_mad, double* rel_mad,
- const Params& p, const Lambda& lambda) {
+timer::Ticks SampleUntilStable(const double max_rel_mad, double* rel_mad,
+ const Params& p, const Lambda& lambda) {
// Choose initial samples_per_eval based on a single estimated duration.
- Ticks t0 = timer::Start32();
+ timer::Ticks t0 = timer::Start();
lambda();
- Ticks t1 = timer::Stop32();
- Ticks est = t1 - t0;
+ timer::Ticks t1 = timer::Stop();
+ timer::Ticks est = t1 - t0;
static const double ticks_per_second = platform::InvariantTicksPerSecond();
const size_t ticks_per_eval =
static_cast<size_t>(ticks_per_second * p.seconds_per_eval);
@@ -481,21 +461,21 @@ Ticks SampleUntilStable(const double max
est == 0 ? p.min_samples_per_eval : ticks_per_eval / est;
samples_per_eval = std::max(samples_per_eval, p.min_samples_per_eval);
- std::vector<Ticks> samples;
+ std::vector<timer::Ticks> samples;
samples.reserve(1 + samples_per_eval);
samples.push_back(est);
// Percentage is too strict for tiny differences, so also allow a small
// absolute "median absolute deviation".
- const Ticks max_abs_mad = (timer_resolution + 99) / 100;
+ const timer::Ticks max_abs_mad = (timer_resolution + 99) / 100;
*rel_mad = 0.0; // ensure initialized
for (size_t eval = 0; eval < p.max_evals; ++eval, samples_per_eval *= 2) {
samples.reserve(samples.size() + samples_per_eval);
for (size_t i = 0; i < samples_per_eval; ++i) {
- t0 = timer::Start32();
+ t0 = timer::Start();
lambda();
- t1 = timer::Stop32();
+ t1 = timer::Stop();
samples.push_back(t1 - t0);
}
@@ -508,14 +488,14 @@ Ticks SampleUntilStable(const double max
NANOBENCHMARK_CHECK(est != 0);
// Median absolute deviation (mad) is a robust measure of 'variability'.
- const Ticks abs_mad = robust_statistics::MedianAbsoluteDeviation(
+ const timer::Ticks abs_mad = robust_statistics::MedianAbsoluteDeviation(
samples.data(), samples.size(), est);
- *rel_mad = static_cast<double>(int(abs_mad)) / est;
+ *rel_mad = static_cast<double>(abs_mad) / static_cast<double>(est);
if (*rel_mad <= max_rel_mad || abs_mad <= max_abs_mad) {
if (p.verbose) {
- printf("%6zu samples => %5u (abs_mad=%4u, rel_mad=%4.2f%%)\n",
- samples.size(), est, abs_mad, *rel_mad * 100.0);
+ printf("%6zu samples => %5zu (abs_mad=%4zu, rel_mad=%4.2f%%)\n",
+ samples.size(), size_t(est), size_t(abs_mad), *rel_mad * 100.0);
}
return est;
}
@@ -539,29 +519,17 @@ InputVec UniqueInputs(const FuncInput* i
return unique;
}
-// Returns how often we need to call func for sufficient precision, or zero
-// on failure (e.g. the elapsed time is too long for a 32-bit tick count).
+// Returns how often we need to call func for sufficient precision.
size_t NumSkip(const Func func, const uint8_t* arg, const InputVec& unique,
const Params& p) {
// Min elapsed ticks for any input.
- Ticks min_duration = ~0u;
+ timer::Ticks min_duration = ~timer::Ticks(0);
for (const FuncInput input : unique) {
- // Make sure a 32-bit timer is sufficient.
- const uint64_t t0 = timer::Start64();
- PreventElision(func(arg, input));
- const uint64_t t1 = timer::Stop64();
- const uint64_t elapsed = t1 - t0;
- if (elapsed >= (1ULL << 30)) {
- fprintf(stderr, "Measurement failed: need 64-bit timer for input=%zu\n",
- input);
- return 0;
- }
-
double rel_mad;
- const Ticks total = SampleUntilStable(
+ const timer::Ticks total = SampleUntilStable(
p.target_rel_mad, &rel_mad, p,
- [func, arg, input]() { PreventElision(func(arg, input)); });
+ [func, arg, input]() { platform::PreventElision(func(arg, input)); });
min_duration = std::min(min_duration, total - timer_resolution);
}
@@ -571,8 +539,8 @@ size_t NumSkip(const Func func, const ui
const size_t num_skip =
min_duration == 0 ? 0 : (max_skip + min_duration - 1) / min_duration;
if (p.verbose) {
- printf("res=%u max_skip=%zu min_dur=%u num_skip=%zu\n", timer_resolution,
- max_skip, min_duration, num_skip);
+ printf("res=%zu max_skip=%zu min_dur=%zu num_skip=%zu\n",
+ size_t(timer_resolution), max_skip, size_t(min_duration), num_skip);
}
return num_skip;
}
@@ -637,13 +605,14 @@ void FillSubset(const InputVec& full, co
}
// Returns total ticks elapsed for all inputs.
-Ticks TotalDuration(const Func func, const uint8_t* arg, const InputVec* inputs,
- const Params& p, double* max_rel_mad) {
+timer::Ticks TotalDuration(const Func func, const uint8_t* arg,
+ const InputVec* inputs, const Params& p,
+ double* max_rel_mad) {
double rel_mad;
- const Ticks duration =
+ const timer::Ticks duration =
SampleUntilStable(p.target_rel_mad, &rel_mad, p, [func, arg, inputs]() {
for (const FuncInput input : *inputs) {
- PreventElision(func(arg, input));
+ platform::PreventElision(func(arg, input));
}
});
*max_rel_mad = std::max(*max_rel_mad, rel_mad);
@@ -657,19 +626,20 @@ HWY_NOINLINE FuncOutput EmptyFunc(const
// Returns overhead of accessing inputs[] and calling a function; this will
// be deducted from future TotalDuration return values.
-Ticks Overhead(const uint8_t* arg, const InputVec* inputs, const Params& p) {
+timer::Ticks Overhead(const uint8_t* arg, const InputVec* inputs,
+ const Params& p) {
double rel_mad;
// Zero tolerance because repeatability is crucial and EmptyFunc is fast.
return SampleUntilStable(0.0, &rel_mad, p, [arg, inputs]() {
for (const FuncInput input : *inputs) {
- PreventElision(EmptyFunc(arg, input));
+ platform::PreventElision(EmptyFunc(arg, input));
}
});
}
} // namespace
-int Unpredictable1() { return timer::Start64() != ~0ULL; }
+int Unpredictable1() { return timer::Start() != ~0ULL; }
size_t Measure(const Func func, const uint8_t* arg, const FuncInput* inputs,
const size_t num_inputs, Result* results, const Params& p) {
@@ -685,32 +655,35 @@ size_t Measure(const Func func, const ui
ReplicateInputs(inputs, num_inputs, unique.size(), num_skip, p);
InputVec subset(full.size() - num_skip);
- const Ticks overhead = Overhead(arg, &full, p);
- const Ticks overhead_skip = Overhead(arg, &subset, p);
+ const timer::Ticks overhead = Overhead(arg, &full, p);
+ const timer::Ticks overhead_skip = Overhead(arg, &subset, p);
if (overhead < overhead_skip) {
- fprintf(stderr, "Measurement failed: overhead %u < %u\n", overhead,
- overhead_skip);
+ fprintf(stderr, "Measurement failed: overhead %zu < %zu\n",
+ size_t(overhead), size_t(overhead_skip));
return 0;
}
if (p.verbose) {
- printf("#inputs=%5zu,%5zu overhead=%5u,%5u\n", full.size(), subset.size(),
- overhead, overhead_skip);
+ printf("#inputs=%5zu,%5zu overhead=%5zu,%5zu\n", full.size(), subset.size(),
+ size_t(overhead), size_t(overhead_skip));
}
double max_rel_mad = 0.0;
- const Ticks total = TotalDuration(func, arg, &full, p, &max_rel_mad);
+ const timer::Ticks total = TotalDuration(func, arg, &full, p, &max_rel_mad);
for (size_t i = 0; i < unique.size(); ++i) {
FillSubset(full, unique[i], num_skip, &subset);
- const Ticks total_skip = TotalDuration(func, arg, &subset, p, &max_rel_mad);
+ const timer::Ticks total_skip =
+ TotalDuration(func, arg, &subset, p, &max_rel_mad);
if (total < total_skip) {
- fprintf(stderr, "Measurement failed: total %u < %u\n", total, total_skip);
+ fprintf(stderr, "Measurement failed: total %zu < %zu\n", size_t(total),
+ size_t(total_skip));
return 0;
}
- const Ticks duration = (total - overhead) - (total_skip - overhead_skip);
+ const timer::Ticks duration =
+ (total - overhead) - (total_skip - overhead_skip);
results[i].input = unique[i];
results[i].ticks = static_cast<float>(duration) * mul;
results[i].variability = static_cast<float>(max_rel_mad);
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark.h 2021-07-26 17:17:12.094291603 -0400
@@ -44,11 +44,6 @@
// central tendency of the measurement samples with the "half sample mode",
// which is more robust to outliers and skewed data than the mean or median.
-// WARNING if included from multiple translation units compiled with distinct
-// flags: this header requires textual inclusion and a predefined NB_NAMESPACE
-// macro that is unique to the current compile flags. We must also avoid
-// standard library headers such as vector and functional that define functions.
-
#include <stddef.h>
#include <stdint.h>
@@ -79,6 +74,16 @@ namespace platform {
// This call may be expensive, callers should cache the result.
double InvariantTicksPerSecond();
+// Returns current timestamp [in seconds] relative to an unspecified origin.
+// Features: monotonic (no negative elapsed time), steady (unaffected by system
+// time changes), high-resolution (on the order of microseconds).
+double Now();
+
+// Returns ticks elapsed in back to back timer calls, i.e. a function of the
+// timer resolution (minimum measurable difference) and overhead.
+// This call is expensive, callers should cache the result.
+uint64_t TimerResolution();
+
} // namespace platform
// Returns 1, but without the compiler knowing what the value is. This prevents
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark_test.cc.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark_test.cc
--- chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark_test.cc.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/nanobenchmark_test.cc 2021-07-26 17:10:30.283171481 -0400
@@ -15,11 +15,11 @@
#include "hwy/nanobenchmark.h"
#include <stdio.h>
-#include <stdlib.h> // strtol
-#include <unistd.h> // sleep
#include <random>
+#include "hwy/tests/test_util-inl.h"
+
namespace hwy {
namespace {
@@ -31,6 +31,7 @@ FuncOutput Div(const void*, FuncInput in
template <size_t N>
void MeasureDiv(const FuncInput (&inputs)[N]) {
+ printf("Measuring integer division (output on final two lines)\n");
Result results[N];
Params params;
params.max_evals = 4; // avoid test timeout
@@ -66,39 +67,14 @@ void MeasureRandom(const FuncInput (&inp
}
}
-template <size_t N>
-void EnsureLongMeasurementFails(const FuncInput (&inputs)[N]) {
- printf("Expect a 'measurement failed' below:\n");
- Result results[N];
-
- const size_t num_results = Measure(
- [](const void*, const FuncInput input) -> FuncOutput {
- // Loop until the sleep succeeds (not interrupted by signal). We assume
- // >= 512 MHz, so 2 seconds will exceed the 1 << 30 tick safety limit.
- while (sleep(2) != 0) {
- }
- return input;
- },
- nullptr, inputs, N, results);
- NANOBENCHMARK_CHECK(num_results == 0);
- (void)num_results;
-}
-
-void RunAll(const int argc, char** /*argv*/) {
- // unpredictable == 1 but the compiler doesn't know that.
- const int unpredictable = argc != 999;
+TEST(NanobenchmarkTest, RunAll) {
+ const int unpredictable = Unpredictable1(); // == 1, unknown to compiler.
static const FuncInput inputs[] = {static_cast<FuncInput>(unpredictable) + 2,
static_cast<FuncInput>(unpredictable + 9)};
MeasureDiv(inputs);
MeasureRandom(inputs);
- EnsureLongMeasurementFails(inputs);
}
} // namespace
} // namespace hwy
-
-int main(int argc, char* argv[]) {
- hwy::RunAll(argc, argv);
- return 0;
-}
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/ops/arm_neon-inl.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/ops/arm_neon-inl.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/ops/arm_neon-inl.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/ops/arm_neon-inl.h 2021-07-26 17:20:19.294142914 -0400
@@ -26,6 +26,8 @@ HWY_BEFORE_NAMESPACE();
namespace hwy {
namespace HWY_NAMESPACE {
+namespace detail { // for code folding and Raw128
+
// Macros used to define single and double function calls for multiple types
// for full and half vectors. These macros are undefined at the end of the file.
@@ -437,12 +439,14 @@ struct Raw128<int8_t, 1> {
using type = int8x8_t;
};
+} // namespace detail
+
template <typename T>
using Full128 = Simd<T, 16 / sizeof(T)>;
template <typename T, size_t N = 16 / sizeof(T)>
class Vec128 {
- using Raw = typename Raw128<T, N>::type;
+ using Raw = typename detail::Raw128<T, N>::type;
public:
HWY_INLINE Vec128() {}
@@ -480,7 +484,8 @@ class Vec128 {
// FF..FF or 0, also for floating-point - see README.
template <typename T, size_t N = 16 / sizeof(T)>
class Mask128 {
- using Raw = typename Raw128<T, N>::type;
+ // ARM C Language Extensions return and expect unsigned type.
+ using Raw = typename detail::Raw128<MakeUnsigned<T>, N>::type;
public:
HWY_INLINE Mask128() {}
@@ -664,15 +669,25 @@ template <typename T, size_t N>
HWY_INLINE Vec128<T, N> Undefined(Simd<T, N> /*d*/) {
HWY_DIAGNOSTICS(push)
HWY_DIAGNOSTICS_OFF(disable : 4701, ignored "-Wuninitialized")
- typename Raw128<T, N>::type a;
+ typename detail::Raw128<T, N>::type a;
return Vec128<T, N>(a);
HWY_DIAGNOSTICS(pop)
}
-// ------------------------------ Extract lane
+// Returns a vector with lane i=[0, N) set to "first" + i.
+template <typename T, size_t N, typename T2>
+Vec128<T, N> Iota(const Simd<T, N> d, const T2 first) {
+ HWY_ALIGN T lanes[16 / sizeof(T)];
+ for (size_t i = 0; i < 16 / sizeof(T); ++i) {
+ lanes[i] = static_cast<T>(first + static_cast<T2>(i));
+ }
+ return Load(d, lanes);
+}
+
+// ------------------------------ GetLane
HWY_INLINE uint8_t GetLane(const Vec128<uint8_t, 16> v) {
- return vget_lane_u8(vget_low_u8(v.raw), 0);
+ return vgetq_lane_u8(v.raw, 0);
}
template <size_t N>
HWY_INLINE uint8_t GetLane(const Vec128<uint8_t, N> v) {
@@ -680,7 +695,7 @@ HWY_INLINE uint8_t GetLane(const Vec128<
}
HWY_INLINE int8_t GetLane(const Vec128<int8_t, 16> v) {
- return vget_lane_s8(vget_low_s8(v.raw), 0);
+ return vgetq_lane_s8(v.raw, 0);
}
template <size_t N>
HWY_INLINE int8_t GetLane(const Vec128<int8_t, N> v) {
@@ -688,7 +703,7 @@ HWY_INLINE int8_t GetLane(const Vec128<i
}
HWY_INLINE uint16_t GetLane(const Vec128<uint16_t, 8> v) {
- return vget_lane_u16(vget_low_u16(v.raw), 0);
+ return vgetq_lane_u16(v.raw, 0);
}
template <size_t N>
HWY_INLINE uint16_t GetLane(const Vec128<uint16_t, N> v) {
@@ -696,7 +711,7 @@ HWY_INLINE uint16_t GetLane(const Vec128
}
HWY_INLINE int16_t GetLane(const Vec128<int16_t, 8> v) {
- return vget_lane_s16(vget_low_s16(v.raw), 0);
+ return vgetq_lane_s16(v.raw, 0);
}
template <size_t N>
HWY_INLINE int16_t GetLane(const Vec128<int16_t, N> v) {
@@ -704,7 +719,7 @@ HWY_INLINE int16_t GetLane(const Vec128<
}
HWY_INLINE uint32_t GetLane(const Vec128<uint32_t, 4> v) {
- return vget_lane_u32(vget_low_u32(v.raw), 0);
+ return vgetq_lane_u32(v.raw, 0);
}
template <size_t N>
HWY_INLINE uint32_t GetLane(const Vec128<uint32_t, N> v) {
@@ -712,7 +727,7 @@ HWY_INLINE uint32_t GetLane(const Vec128
}
HWY_INLINE int32_t GetLane(const Vec128<int32_t, 4> v) {
- return vget_lane_s32(vget_low_s32(v.raw), 0);
+ return vgetq_lane_s32(v.raw, 0);
}
template <size_t N>
HWY_INLINE int32_t GetLane(const Vec128<int32_t, N> v) {
@@ -720,20 +735,20 @@ HWY_INLINE int32_t GetLane(const Vec128<
}
HWY_INLINE uint64_t GetLane(const Vec128<uint64_t, 2> v) {
- return vget_lane_u64(vget_low_u64(v.raw), 0);
+ return vgetq_lane_u64(v.raw, 0);
}
HWY_INLINE uint64_t GetLane(const Vec128<uint64_t, 1> v) {
return vget_lane_u64(v.raw, 0);
}
HWY_INLINE int64_t GetLane(const Vec128<int64_t, 2> v) {
- return vget_lane_s64(vget_low_s64(v.raw), 0);
+ return vgetq_lane_s64(v.raw, 0);
}
HWY_INLINE int64_t GetLane(const Vec128<int64_t, 1> v) {
return vget_lane_s64(v.raw, 0);
}
HWY_INLINE float GetLane(const Vec128<float, 4> v) {
- return vget_lane_f32(vget_low_f32(v.raw), 0);
+ return vgetq_lane_f32(v.raw, 0);
}
HWY_INLINE float GetLane(const Vec128<float, 2> v) {
return vget_lane_f32(v.raw, 0);
@@ -743,7 +758,7 @@ HWY_INLINE float GetLane(const Vec128<fl
}
#if HWY_ARCH_ARM_A64
HWY_INLINE double GetLane(const Vec128<double, 2> v) {
- return vget_lane_f64(vget_low_f64(v.raw), 0);
+ return vgetq_lane_f64(v.raw, 0);
}
HWY_INLINE double GetLane(const Vec128<double, 1> v) {
return vget_lane_f64(v.raw, 0);
@@ -785,8 +800,6 @@ HWY_NEON_DEF_FUNCTION_INT_64(SaturatedSu
// ------------------------------ Average
// Returns (a + b + 1) / 2
-
-// Unsigned
HWY_NEON_DEF_FUNCTION_UINT_8(AverageRound, vrhadd, _, 2)
HWY_NEON_DEF_FUNCTION_UINT_16(AverageRound, vrhadd, _, 2)
@@ -802,6 +815,7 @@ HWY_INLINE Vec128<int16_t> Abs(const Vec
HWY_INLINE Vec128<int32_t> Abs(const Vec128<int32_t> v) {
return Vec128<int32_t>(vabsq_s32(v.raw));
}
+// i64 is implemented after BroadcastSignBit.
HWY_INLINE Vec128<float> Abs(const Vec128<float> v) {
return Vec128<float>(vabsq_f32(v.raw));
}
@@ -1184,21 +1198,34 @@ HWY_INLINE Vec128<float, N> ApproximateR
#if HWY_ARCH_ARM_A64
HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operator/, vdiv, _, 2)
#else
-// Emulated with approx reciprocal + Newton-Raphson + mul
+// Not defined on armv7: approximate
+namespace detail {
+
+HWY_INLINE Vec128<float> ReciprocalNewtonRaphsonStep(
+ const Vec128<float> recip, const Vec128<float> divisor) {
+ return Vec128<float>(vrecpsq_f32(recip.raw, divisor.raw));
+}
+template <size_t N>
+HWY_INLINE Vec128<float, N> ReciprocalNewtonRaphsonStep(
+ const Vec128<float, N> recip, Vec128<float, N> divisor) {
+ return Vec128<float, N>(vrecps_f32(recip.raw, divisor.raw));
+}
+
+} // namespace detail
+
template <size_t N>
HWY_INLINE Vec128<float, N> operator/(const Vec128<float, N> a,
const Vec128<float, N> b) {
auto x = ApproximateReciprocal(b);
- // Newton-Raphson on 1/x - b
- const auto two = Set(Simd<float, N>(), 2);
- x = x * (two - b * x);
- x = x * (two - b * x);
- x = x * (two - b * x);
+ x *= detail::ReciprocalNewtonRaphsonStep(x, b);
+ x *= detail::ReciprocalNewtonRaphsonStep(x, b);
+ x *= detail::ReciprocalNewtonRaphsonStep(x, b);
return a * x;
}
#endif
-// Absolute value of difference.
+// ------------------------------ Absolute value of difference.
+
HWY_INLINE Vec128<float> AbsDiff(const Vec128<float> a, const Vec128<float> b) {
return Vec128<float>(vabdq_f32(a.raw, b.raw));
}
@@ -1312,7 +1339,7 @@ HWY_INLINE Vec128<double, N> NegMulSub(c
}
#endif
-// ------------------------------ Floating-point square root
+// ------------------------------ Floating-point square root (IfThenZeroElse)
// Approximate reciprocal square root
HWY_INLINE Vec128<float> ApproximateReciprocalSqrt(const Vec128<float> v) {
@@ -1328,77 +1355,33 @@ HWY_INLINE Vec128<float, N> ApproximateR
#if HWY_ARCH_ARM_A64
HWY_NEON_DEF_FUNCTION_ALL_FLOATS(Sqrt, vsqrt, _, 1)
#else
-// Not defined on armv7: emulate with approx reciprocal sqrt + Goldschmidt.
-template <size_t N>
-HWY_INLINE Vec128<float, N> Sqrt(const Vec128<float, N> v) {
- auto b = v;
- auto Y = ApproximateReciprocalSqrt(v);
- auto x = v * Y;
- const auto half = Set(Simd<float, N>(), 0.5);
- const auto oneandhalf = Set(Simd<float, N>(), 1.5);
- for (size_t i = 0; i < 3; i++) {
- b = b * Y * Y;
- Y = oneandhalf - half * b;
- x = x * Y;
- }
- return IfThenZeroElse(v == Zero(Simd<float, N>()), x);
-}
-#endif
-
-// ================================================== COMPARE
-
-// Comparisons fill a lane with 1-bits if the condition is true, else 0.
+namespace detail {
-template <typename TFrom, typename TTo, size_t N>
-HWY_API Mask128<TTo, N> RebindMask(Simd<TTo, N> /*tag*/, Mask128<TFrom, N> m) {
- static_assert(sizeof(TFrom) == sizeof(TTo), "Must have same size");
- return Mask128<TTo, N>{m.raw};
+HWY_INLINE Vec128<float> ReciprocalSqrtStep(const Vec128<float> root,
+ const Vec128<float> recip) {
+ return Vec128<float>(vrsqrtsq_f32(root.raw, recip.raw));
+}
+template <size_t N>
+HWY_INLINE Vec128<float, N> ReciprocalSqrtStep(const Vec128<float, N> root,
+ Vec128<float, N> recip) {
+ return Vec128<float, N>(vrsqrts_f32(root.raw, recip.raw));
}
-#define HWY_NEON_BUILD_TPL_HWY_COMPARE
-#define HWY_NEON_BUILD_RET_HWY_COMPARE(type, size) Mask128<type, size>
-#define HWY_NEON_BUILD_PARAM_HWY_COMPARE(type, size) \
- const Vec128<type, size> a, const Vec128<type, size> b
-#define HWY_NEON_BUILD_ARG_HWY_COMPARE a.raw, b.raw
-
-// ------------------------------ Equality
-HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operator==, vceq, _, HWY_COMPARE)
-#if HWY_ARCH_ARM_A64
-HWY_NEON_DEF_FUNCTION_INTS_UINTS(operator==, vceq, _, HWY_COMPARE)
-#else
-// No 64-bit comparisons on armv7: emulate them below, after Shuffle2301.
-HWY_NEON_DEF_FUNCTION_INT_8_16_32(operator==, vceq, _, HWY_COMPARE)
-HWY_NEON_DEF_FUNCTION_UINT_8_16_32(operator==, vceq, _, HWY_COMPARE)
-#endif
+} // namespace detail
-// ------------------------------ Strict inequality
+// Not defined on armv7: approximate
+template <size_t N>
+HWY_INLINE Vec128<float, N> Sqrt(const Vec128<float, N> v) {
+ auto recip = ApproximateReciprocalSqrt(v);
-// Signed/float < (no unsigned)
-#if HWY_ARCH_ARM_A64
-HWY_NEON_DEF_FUNCTION_INTS(operator<, vclt, _, HWY_COMPARE)
-#else
-HWY_NEON_DEF_FUNCTION_INT_8_16_32(operator<, vclt, _, HWY_COMPARE)
-#endif
-HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operator<, vclt, _, HWY_COMPARE)
+ recip *= detail::ReciprocalSqrtStep(v * recip, recip);
+ recip *= detail::ReciprocalSqrtStep(v * recip, recip);
+ recip *= detail::ReciprocalSqrtStep(v * recip, recip);
-// Signed/float > (no unsigned)
-#if HWY_ARCH_ARM_A64
-HWY_NEON_DEF_FUNCTION_INTS(operator>, vcgt, _, HWY_COMPARE)
-#else
-HWY_NEON_DEF_FUNCTION_INT_8_16_32(operator>, vcgt, _, HWY_COMPARE)
+ const auto root = v * recip;
+ return IfThenZeroElse(v == Zero(Simd<float, N>()), root);
+}
#endif
-HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operator>, vcgt, _, HWY_COMPARE)
-
-// ------------------------------ Weak inequality
-
-// Float <= >=
-HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operator<=, vcle, _, HWY_COMPARE)
-HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operator>=, vcge, _, HWY_COMPARE)
-
-#undef HWY_NEON_BUILD_TPL_HWY_COMPARE
-#undef HWY_NEON_BUILD_RET_HWY_COMPARE
-#undef HWY_NEON_BUILD_PARAM_HWY_COMPARE
-#undef HWY_NEON_BUILD_ARG_HWY_COMPARE
// ================================================== LOGICAL
@@ -1407,13 +1390,16 @@ HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operato
// There is no 64-bit vmvn, so cast instead of using HWY_NEON_DEF_FUNCTION.
template <typename T>
HWY_INLINE Vec128<T> Not(const Vec128<T> v) {
- const Full128<uint8_t> d8;
- return Vec128<T>(vmvnq_u8(BitCast(d8, v).raw));
+ const Full128<T> d;
+ const Repartition<uint8_t, decltype(d)> d8;
+ return BitCast(d, Vec128<uint8_t>(vmvnq_u8(BitCast(d8, v).raw)));
}
template <typename T, size_t N, HWY_IF_LE64(T, N)>
HWY_INLINE Vec128<T, N> Not(const Vec128<T, N> v) {
- const Repartition<uint8_t, Simd<T, N>> d8;
- return Vec128<T, N>(vmvn_u8(BitCast(d8, v).raw));
+ const Simd<T, N> d;
+ const Repartition<uint8_t, decltype(d)> d8;
+ using V8 = decltype(Zero(d8));
+ return BitCast(d, V8(vmvn_u8(BitCast(d8, v).raw)));
}
// ------------------------------ And
@@ -1513,33 +1499,38 @@ HWY_API Vec128<T, N> BroadcastSignBit(co
return ShiftRight<sizeof(T) * 8 - 1>(v);
}
-// ------------------------------ Make mask
+// ================================================== MASK
-template <typename T, size_t N>
-HWY_INLINE Mask128<T, N> TestBit(Vec128<T, N> v, Vec128<T, N> bit) {
- static_assert(!hwy::IsFloat<T>(), "Only integer vectors supported");
- return (v & bit) == bit;
-}
+// ------------------------------ To/from vector
-// Mask and Vec are the same (true = FF..FF).
+// Mask and Vec have the same representation (true = FF..FF).
template <typename T, size_t N>
HWY_INLINE Mask128<T, N> MaskFromVec(const Vec128<T, N> v) {
- return Mask128<T, N>(v.raw);
+ const Simd<MakeUnsigned<T>, N> du;
+ return Mask128<T, N>(BitCast(du, v).raw);
}
+// DEPRECATED
template <typename T, size_t N>
HWY_INLINE Vec128<T, N> VecFromMask(const Mask128<T, N> v) {
- return Vec128<T, N>(v.raw);
+ return BitCast(Simd<T, N>(), Vec128<MakeUnsigned<T>, N>(v.raw));
}
template <typename T, size_t N>
-HWY_INLINE Vec128<T, N> VecFromMask(Simd<T, N> /* tag */,
- const Mask128<T, N> v) {
- return Vec128<T, N>(v.raw);
+HWY_INLINE Vec128<T, N> VecFromMask(Simd<T, N> d, const Mask128<T, N> v) {
+ return BitCast(d, Vec128<MakeUnsigned<T>, N>(v.raw));
+}
+
+// ------------------------------ RebindMask
+
+template <typename TFrom, typename TTo, size_t N>
+HWY_API Mask128<TTo, N> RebindMask(Simd<TTo, N> dto, Mask128<TFrom, N> m) {
+ static_assert(sizeof(TFrom) == sizeof(TTo), "Must have same size");
+ return MaskFromVec(BitCast(dto, VecFromMask(Simd<TFrom, N>(), m)));
}
-// IfThenElse(mask, yes, no)
-// Returns mask ? b : a.
+// ------------------------------ IfThenElse(mask, yes, no) = mask ? b : a.
+
#define HWY_NEON_BUILD_TPL_HWY_IF
#define HWY_NEON_BUILD_RET_HWY_IF(type, size) Vec128<type, size>
#define HWY_NEON_BUILD_PARAM_HWY_IF(type, size) \
@@ -1574,7 +1565,6 @@ HWY_INLINE Vec128<T, N> ZeroIfNegative(V
return Max(zero, v);
}
-
// ------------------------------ Mask logical
template <typename T, size_t N>
@@ -1607,30 +1597,183 @@ HWY_API Mask128<T, N> Xor(const Mask128<
return MaskFromVec(Xor(VecFromMask(d, a), VecFromMask(d, b)));
}
-// ------------------------------ Min (IfThenElse, BroadcastSignBit)
+// ================================================== COMPARE
-namespace detail {
+// Comparisons fill a lane with 1-bits if the condition is true, else 0.
+
+// ------------------------------ Shuffle2301 (for i64 compares)
+
+// Swap 32-bit halves in 64-bits
+HWY_INLINE Vec128<uint32_t, 2> Shuffle2301(const Vec128<uint32_t, 2> v) {
+ return Vec128<uint32_t, 2>(vrev64_u32(v.raw));
+}
+HWY_INLINE Vec128<int32_t, 2> Shuffle2301(const Vec128<int32_t, 2> v) {
+ return Vec128<int32_t, 2>(vrev64_s32(v.raw));
+}
+HWY_INLINE Vec128<float, 2> Shuffle2301(const Vec128<float, 2> v) {
+ return Vec128<float, 2>(vrev64_f32(v.raw));
+}
+HWY_INLINE Vec128<uint32_t> Shuffle2301(const Vec128<uint32_t> v) {
+ return Vec128<uint32_t>(vrev64q_u32(v.raw));
+}
+HWY_INLINE Vec128<int32_t> Shuffle2301(const Vec128<int32_t> v) {
+ return Vec128<int32_t>(vrev64q_s32(v.raw));
+}
+HWY_INLINE Vec128<float> Shuffle2301(const Vec128<float> v) {
+ return Vec128<float>(vrev64q_f32(v.raw));
+}
+
+#define HWY_NEON_BUILD_TPL_HWY_COMPARE
+#define HWY_NEON_BUILD_RET_HWY_COMPARE(type, size) Mask128<type, size>
+#define HWY_NEON_BUILD_PARAM_HWY_COMPARE(type, size) \
+ const Vec128<type, size> a, const Vec128<type, size> b
+#define HWY_NEON_BUILD_ARG_HWY_COMPARE a.raw, b.raw
+// ------------------------------ Equality
+HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operator==, vceq, _, HWY_COMPARE)
#if HWY_ARCH_ARM_A64
+HWY_NEON_DEF_FUNCTION_INTS_UINTS(operator==, vceq, _, HWY_COMPARE)
+#else
+// No 64-bit comparisons on armv7: emulate them below, after Shuffle2301.
+HWY_NEON_DEF_FUNCTION_INT_8_16_32(operator==, vceq, _, HWY_COMPARE)
+HWY_NEON_DEF_FUNCTION_UINT_8_16_32(operator==, vceq, _, HWY_COMPARE)
+#endif
-HWY_INLINE Vec128<uint64_t> Gt(Vec128<uint64_t> a, Vec128<uint64_t> b) {
- return Vec128<uint64_t>(vcgtq_u64(a.raw, b.raw));
+// ------------------------------ Strict inequality (signed, float)
+#if HWY_ARCH_ARM_A64
+HWY_NEON_DEF_FUNCTION_INTS(operator<, vclt, _, HWY_COMPARE)
+#else
+HWY_NEON_DEF_FUNCTION_INT_8_16_32(operator<, vclt, _, HWY_COMPARE)
+#endif
+HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operator<, vclt, _, HWY_COMPARE)
+
+// ------------------------------ Weak inequality (float)
+HWY_NEON_DEF_FUNCTION_ALL_FLOATS(operator<=, vcle, _, HWY_COMPARE)
+
+#undef HWY_NEON_BUILD_TPL_HWY_COMPARE
+#undef HWY_NEON_BUILD_RET_HWY_COMPARE
+#undef HWY_NEON_BUILD_PARAM_HWY_COMPARE
+#undef HWY_NEON_BUILD_ARG_HWY_COMPARE
+
+// ------------------------------ ARMv7 i64 compare (Shuffle2301, Eq)
+
+#if HWY_ARCH_ARM_V7
+
+template <size_t N>
+HWY_INLINE Mask128<int64_t, N> operator==(const Vec128<int64_t, N> a,
+ const Vec128<int64_t, N> b) {
+ const Simd<int32_t, N * 2> d32;
+ const Simd<int64_t, N> d64;
+ const auto cmp32 = VecFromMask(d32, Eq(BitCast(d32, a), BitCast(d32, b)));
+ const auto cmp64 = cmp32 & Shuffle2301(cmp32);
+ return MaskFromVec(BitCast(d64, cmp64));
}
-HWY_INLINE Vec128<uint64_t, 1> Gt(Vec128<uint64_t, 1> a,
- Vec128<uint64_t, 1> b) {
- return Vec128<uint64_t, 1>(vcgt_u64(a.raw, b.raw));
+
+template <size_t N>
+HWY_INLINE Mask128<uint64_t, N> operator==(const Vec128<uint64_t, N> a,
+ const Vec128<uint64_t, N> b) {
+ const Simd<uint32_t, N * 2> d32;
+ const Simd<uint64_t, N> d64;
+ const auto cmp32 = VecFromMask(d32, Eq(BitCast(d32, a), BitCast(d32, b)));
+ const auto cmp64 = cmp32 & Shuffle2301(cmp32);
+ return MaskFromVec(BitCast(d64, cmp64));
}
-HWY_INLINE Vec128<int64_t> Gt(Vec128<int64_t> a, Vec128<int64_t> b) {
- return Vec128<int64_t>(vcgtq_s64(a.raw, b.raw));
+HWY_INLINE Mask128<int64_t> operator<(const Vec128<int64_t> a,
+ const Vec128<int64_t> b) {
+ const int64x2_t sub = vqsubq_s64(a.raw, b.raw);
+ return MaskFromVec(BroadcastSignBit(Vec128<int64_t>(sub)));
}
-HWY_INLINE Vec128<int64_t, 1> Gt(Vec128<int64_t, 1> a, Vec128<int64_t, 1> b) {
- return Vec128<int64_t, 1>(vcgt_s64(a.raw, b.raw));
+HWY_INLINE Mask128<int64_t, 1> operator<(const Vec128<int64_t, 1> a,
+ const Vec128<int64_t, 1> b) {
+ const int64x1_t sub = vqsub_s64(a.raw, b.raw);
+ return MaskFromVec(BroadcastSignBit(Vec128<int64_t, 1>(sub)));
}
#endif
-} // namespace detail
+// ------------------------------ Reversed comparisons
+
+template <typename T, size_t N>
+HWY_API Mask128<T, N> operator>(Vec128<T, N> a, Vec128<T, N> b) {
+ return operator<(b, a);
+}
+template <typename T, size_t N>
+HWY_API Mask128<T, N> operator>=(Vec128<T, N> a, Vec128<T, N> b) {
+ return operator<=(b, a);
+}
+
+// ------------------------------ FirstN (Iota, Lt)
+
+template <typename T, size_t N>
+HWY_API Mask128<T, N> FirstN(const Simd<T, N> d, size_t num) {
+ const RebindToSigned<decltype(d)> di; // Signed comparisons are cheaper.
+ return RebindMask(d, Iota(di, 0) < Set(di, static_cast<MakeSigned<T>>(num)));
+}
+
+// ------------------------------ TestBit (Eq)
+
+#define HWY_NEON_BUILD_TPL_HWY_TESTBIT
+#define HWY_NEON_BUILD_RET_HWY_TESTBIT(type, size) Mask128<type, size>
+#define HWY_NEON_BUILD_PARAM_HWY_TESTBIT(type, size) \
+ Vec128<type, size> v, Vec128<type, size> bit
+#define HWY_NEON_BUILD_ARG_HWY_TESTBIT v.raw, bit.raw
+
+#if HWY_ARCH_ARM_A64
+HWY_NEON_DEF_FUNCTION_INTS_UINTS(TestBit, vtst, _, HWY_TESTBIT)
+#else
+// No 64-bit versions on armv7
+HWY_NEON_DEF_FUNCTION_UINT_8_16_32(TestBit, vtst, _, HWY_TESTBIT)
+HWY_NEON_DEF_FUNCTION_INT_8_16_32(TestBit, vtst, _, HWY_TESTBIT)
+
+template <size_t N>
+HWY_INLINE Mask128<uint64_t, N> TestBit(Vec128<uint64_t, N> v,
+ Vec128<uint64_t, N> bit) {
+ return (v & bit) == bit;
+}
+template <size_t N>
+HWY_INLINE Mask128<int64_t, N> TestBit(Vec128<int64_t, N> v,
+ Vec128<int64_t, N> bit) {
+ return (v & bit) == bit;
+}
+
+#endif
+#undef HWY_NEON_BUILD_TPL_HWY_TESTBIT
+#undef HWY_NEON_BUILD_RET_HWY_TESTBIT
+#undef HWY_NEON_BUILD_PARAM_HWY_TESTBIT
+#undef HWY_NEON_BUILD_ARG_HWY_TESTBIT
+
+// ------------------------------ Abs i64 (IfThenElse, BroadcastSignBit)
+HWY_INLINE Vec128<int64_t> Abs(const Vec128<int64_t> v) {
+#if HWY_ARCH_ARM_A64
+ return Vec128<int64_t>(vabsq_s64(v.raw));
+#else
+ const auto zero = Zero(Full128<int64_t>());
+ return IfThenElse(MaskFromVec(BroadcastSignBit(v)), zero - v, v);
+#endif
+}
+HWY_INLINE Vec128<int64_t, 1> Abs(const Vec128<int64_t, 1> v) {
+#if HWY_ARCH_ARM_A64
+ return Vec128<int64_t, 1>(vabs_s64(v.raw));
+#else
+ const auto zero = Zero(Simd<int64_t, 1>());
+ return IfThenElse(MaskFromVec(BroadcastSignBit(v)), zero - v, v);
+#endif
+}
+
+// ------------------------------ Min (IfThenElse, BroadcastSignBit)
+
+#if HWY_ARCH_ARM_A64
+
+HWY_INLINE Mask128<uint64_t> operator<(Vec128<uint64_t> a, Vec128<uint64_t> b) {
+ return Mask128<uint64_t>(vcltq_u64(a.raw, b.raw));
+}
+HWY_INLINE Mask128<uint64_t, 1> operator<(Vec128<uint64_t, 1> a,
+ Vec128<uint64_t, 1> b) {
+ return Mask128<uint64_t, 1>(vclt_u64(a.raw, b.raw));
+}
+
+#endif
// Unsigned
HWY_NEON_DEF_FUNCTION_UINT_8_16_32(Min, vmin, _, 2)
@@ -1639,7 +1782,7 @@ template <size_t N>
HWY_INLINE Vec128<uint64_t, N> Min(const Vec128<uint64_t, N> a,
const Vec128<uint64_t, N> b) {
#if HWY_ARCH_ARM_A64
- return IfThenElse(MaskFromVec(detail::Gt(a, b)), b, a);
+ return IfThenElse(b < a, b, a);
#else
const Simd<uint64_t, N> du;
const Simd<int64_t, N> di;
@@ -1654,7 +1797,7 @@ template <size_t N>
HWY_INLINE Vec128<int64_t, N> Min(const Vec128<int64_t, N> a,
const Vec128<int64_t, N> b) {
#if HWY_ARCH_ARM_A64
- return IfThenElse(MaskFromVec(detail::Gt(a, b)), b, a);
+ return IfThenElse(b < a, b, a);
#else
const Vec128<int64_t, N> sign = detail::SaturatedSub(a, b);
return IfThenElse(MaskFromVec(BroadcastSignBit(sign)), a, b);
@@ -1677,7 +1820,7 @@ template <size_t N>
HWY_INLINE Vec128<uint64_t, N> Max(const Vec128<uint64_t, N> a,
const Vec128<uint64_t, N> b) {
#if HWY_ARCH_ARM_A64
- return IfThenElse(MaskFromVec(detail::Gt(a, b)), a, b);
+ return IfThenElse(b < a, a, b);
#else
const Simd<uint64_t, N> du;
const Simd<int64_t, N> di;
@@ -1692,7 +1835,7 @@ template <size_t N>
HWY_INLINE Vec128<int64_t, N> Max(const Vec128<int64_t, N> a,
const Vec128<int64_t, N> b) {
#if HWY_ARCH_ARM_A64
- return IfThenElse(MaskFromVec(detail::Gt(a, b)), a, b);
+ return IfThenElse(b < a, a, b);
#else
const Vec128<int64_t, N> sign = detail::SaturatedSub(a, b);
return IfThenElse(MaskFromVec(BroadcastSignBit(sign)), b, a);
@@ -1805,73 +1948,72 @@ HWY_INLINE Vec128<double, 1> LoadU(Simd<
// we don't actually care what is in it, and we don't want
// to introduce extra overhead by initializing it to something.
-HWY_INLINE Vec128<uint8_t, 4> LoadU(Simd<uint8_t, 4> d,
+HWY_INLINE Vec128<uint8_t, 4> LoadU(Simd<uint8_t, 4> /*tag*/,
const uint8_t* HWY_RESTRICT p) {
- uint32x2_t a = Undefined(d).raw;
+ uint32x2_t a = Undefined(Simd<uint32_t, 2>()).raw;
uint32x2_t b = vld1_lane_u32(reinterpret_cast<const uint32_t*>(p), a, 0);
return Vec128<uint8_t, 4>(vreinterpret_u8_u32(b));
}
-HWY_INLINE Vec128<uint16_t, 2> LoadU(Simd<uint16_t, 2> d,
+HWY_INLINE Vec128<uint16_t, 2> LoadU(Simd<uint16_t, 2> /*tag*/,
const uint16_t* HWY_RESTRICT p) {
- uint32x2_t a = Undefined(d).raw;
+ uint32x2_t a = Undefined(Simd<uint32_t, 2>()).raw;
uint32x2_t b = vld1_lane_u32(reinterpret_cast<const uint32_t*>(p), a, 0);
return Vec128<uint16_t, 2>(vreinterpret_u16_u32(b));
}
-HWY_INLINE Vec128<uint32_t, 1> LoadU(Simd<uint32_t, 1> d,
+HWY_INLINE Vec128<uint32_t, 1> LoadU(Simd<uint32_t, 1> /*tag*/,
const uint32_t* HWY_RESTRICT p) {
- uint32x2_t a = Undefined(d).raw;
+ uint32x2_t a = Undefined(Simd<uint32_t, 2>()).raw;
uint32x2_t b = vld1_lane_u32(p, a, 0);
return Vec128<uint32_t, 1>(b);
}
-HWY_INLINE Vec128<int8_t, 4> LoadU(Simd<int8_t, 4> d,
+HWY_INLINE Vec128<int8_t, 4> LoadU(Simd<int8_t, 4> /*tag*/,
const int8_t* HWY_RESTRICT p) {
- int32x2_t a = Undefined(d).raw;
+ int32x2_t a = Undefined(Simd<int32_t, 2>()).raw;
int32x2_t b = vld1_lane_s32(reinterpret_cast<const int32_t*>(p), a, 0);
return Vec128<int8_t, 4>(vreinterpret_s8_s32(b));
}
-HWY_INLINE Vec128<int16_t, 2> LoadU(Simd<int16_t, 2> d,
+HWY_INLINE Vec128<int16_t, 2> LoadU(Simd<int16_t, 2> /*tag*/,
const int16_t* HWY_RESTRICT p) {
- int32x2_t a = Undefined(d).raw;
+ int32x2_t a = Undefined(Simd<int32_t, 2>()).raw;
int32x2_t b = vld1_lane_s32(reinterpret_cast<const int32_t*>(p), a, 0);
return Vec128<int16_t, 2>(vreinterpret_s16_s32(b));
}
-HWY_INLINE Vec128<int32_t, 1> LoadU(Simd<int32_t, 1> d,
+HWY_INLINE Vec128<int32_t, 1> LoadU(Simd<int32_t, 1> /*tag*/,
const int32_t* HWY_RESTRICT p) {
- int32x2_t a = Undefined(d).raw;
+ int32x2_t a = Undefined(Simd<int32_t, 2>()).raw;
int32x2_t b = vld1_lane_s32(p, a, 0);
return Vec128<int32_t, 1>(b);
}
-HWY_INLINE Vec128<float, 1> LoadU(Simd<float, 1> d,
+HWY_INLINE Vec128<float, 1> LoadU(Simd<float, 1> /*tag*/,
const float* HWY_RESTRICT p) {
- float32x2_t a = Undefined(d).raw;
+ float32x2_t a = Undefined(Simd<float, 2>()).raw;
float32x2_t b = vld1_lane_f32(p, a, 0);
return Vec128<float, 1>(b);
}
// ------------------------------ Load 16
-HWY_INLINE Vec128<uint8_t, 2> LoadU(Simd<uint8_t, 2> d,
+HWY_INLINE Vec128<uint8_t, 2> LoadU(Simd<uint8_t, 2> /*tag*/,
const uint8_t* HWY_RESTRICT p) {
- uint16x4_t a = Undefined(d).raw;
+ uint16x4_t a = Undefined(Simd<uint16_t, 4>()).raw;
uint16x4_t b = vld1_lane_u16(reinterpret_cast<const uint16_t*>(p), a, 0);
return Vec128<uint8_t, 2>(vreinterpret_u8_u16(b));
}
-HWY_INLINE Vec128<uint16_t, 1> LoadU(Simd<uint16_t, 1> d,
+HWY_INLINE Vec128<uint16_t, 1> LoadU(Simd<uint16_t, 1> /*tag*/,
const uint16_t* HWY_RESTRICT p) {
- uint16x4_t a = Undefined(d).raw;
+ uint16x4_t a = Undefined(Simd<uint16_t, 4>()).raw;
uint16x4_t b = vld1_lane_u16(p, a, 0);
return Vec128<uint16_t, 1>(b);
}
-
-HWY_INLINE Vec128<int8_t, 2> LoadU(Simd<int8_t, 2> d,
+HWY_INLINE Vec128<int8_t, 2> LoadU(Simd<int8_t, 2> /*tag*/,
const int8_t* HWY_RESTRICT p) {
- int16x4_t a = Undefined(d).raw;
+ int16x4_t a = Undefined(Simd<int16_t, 4>()).raw;
int16x4_t b = vld1_lane_s16(reinterpret_cast<const int16_t*>(p), a, 0);
return Vec128<int8_t, 2>(vreinterpret_s8_s16(b));
}
-HWY_INLINE Vec128<int16_t, 1> LoadU(Simd<int16_t, 1> d,
+HWY_INLINE Vec128<int16_t, 1> LoadU(Simd<int16_t, 1> /*tag*/,
const int16_t* HWY_RESTRICT p) {
- int16x4_t a = Undefined(d).raw;
+ int16x4_t a = Undefined(Simd<int16_t, 4>()).raw;
int16x4_t b = vld1_lane_s16(p, a, 0);
return Vec128<int16_t, 1>(b);
}
@@ -2009,12 +2151,12 @@ HWY_INLINE void StoreU(const Vec128<doub
HWY_INLINE void StoreU(const Vec128<uint8_t, 4> v, Simd<uint8_t, 4>,
uint8_t* HWY_RESTRICT p) {
uint32x2_t a = vreinterpret_u32_u8(v.raw);
- vst1_lane_u32(p, a, 0);
+ vst1_lane_u32(reinterpret_cast<uint32_t*>(p), a, 0);
}
HWY_INLINE void StoreU(const Vec128<uint16_t, 2> v, Simd<uint16_t, 2>,
uint16_t* HWY_RESTRICT p) {
uint32x2_t a = vreinterpret_u32_u16(v.raw);
- vst1_lane_u32(p, a, 0);
+ vst1_lane_u32(reinterpret_cast<uint32_t*>(p), a, 0);
}
HWY_INLINE void StoreU(const Vec128<uint32_t, 1> v, Simd<uint32_t, 1>,
uint32_t* HWY_RESTRICT p) {
@@ -2023,12 +2165,12 @@ HWY_INLINE void StoreU(const Vec128<uint
HWY_INLINE void StoreU(const Vec128<int8_t, 4> v, Simd<int8_t, 4>,
int8_t* HWY_RESTRICT p) {
int32x2_t a = vreinterpret_s32_s8(v.raw);
- vst1_lane_s32(p, a, 0);
+ vst1_lane_s32(reinterpret_cast<int32_t*>(p), a, 0);
}
HWY_INLINE void StoreU(const Vec128<int16_t, 2> v, Simd<int16_t, 2>,
int16_t* HWY_RESTRICT p) {
int32x2_t a = vreinterpret_s32_s16(v.raw);
- vst1_lane_s32(p, a, 0);
+ vst1_lane_s32(reinterpret_cast<int32_t*>(p), a, 0);
}
HWY_INLINE void StoreU(const Vec128<int32_t, 1> v, Simd<int32_t, 1>,
int32_t* HWY_RESTRICT p) {
@@ -2044,7 +2186,7 @@ HWY_INLINE void StoreU(const Vec128<floa
HWY_INLINE void StoreU(const Vec128<uint8_t, 2> v, Simd<uint8_t, 2>,
uint8_t* HWY_RESTRICT p) {
uint16x4_t a = vreinterpret_u16_u8(v.raw);
- vst1_lane_u16(p, a, 0);
+ vst1_lane_u16(reinterpret_cast<uint16_t*>(p), a, 0);
}
HWY_INLINE void StoreU(const Vec128<uint16_t, 1> v, Simd<uint16_t, 1>,
uint16_t* HWY_RESTRICT p) {
@@ -2053,7 +2195,7 @@ HWY_INLINE void StoreU(const Vec128<uint
HWY_INLINE void StoreU(const Vec128<int8_t, 2> v, Simd<int8_t, 2>,
int8_t* HWY_RESTRICT p) {
int16x4_t a = vreinterpret_s16_s8(v.raw);
- vst1_lane_s16(p, a, 0);
+ vst1_lane_s16(reinterpret_cast<int16_t*>(p), a, 0);
}
HWY_INLINE void StoreU(const Vec128<int16_t, 1> v, Simd<int16_t, 1>,
int16_t* HWY_RESTRICT p) {
@@ -2118,18 +2260,18 @@ HWY_INLINE Vec128<uint64_t> PromoteTo(Fu
const Vec128<uint32_t, 2> v) {
return Vec128<uint64_t>(vmovl_u32(v.raw));
}
-HWY_INLINE Vec128<int16_t> PromoteTo(Full128<int16_t> /* tag */,
+HWY_INLINE Vec128<int16_t> PromoteTo(Full128<int16_t> d,
const Vec128<uint8_t, 8> v) {
- return Vec128<int16_t>(vmovl_u8(v.raw));
+ return BitCast(d, Vec128<uint16_t>(vmovl_u8(v.raw)));
}
-HWY_INLINE Vec128<int32_t> PromoteTo(Full128<int32_t> /* tag */,
+HWY_INLINE Vec128<int32_t> PromoteTo(Full128<int32_t> d,
const Vec128<uint8_t, 4> v) {
uint16x8_t a = vmovl_u8(v.raw);
- return Vec128<int32_t>(vreinterpretq_s32_u16(vmovl_u16(vget_low_u16(a))));
+ return BitCast(d, Vec128<uint32_t>(vmovl_u16(vget_low_u16(a))));
}
-HWY_INLINE Vec128<int32_t> PromoteTo(Full128<int32_t> /* tag */,
+HWY_INLINE Vec128<int32_t> PromoteTo(Full128<int32_t> d,
const Vec128<uint16_t, 4> v) {
- return Vec128<int32_t>(vmovl_u16(v.raw));
+ return BitCast(d, Vec128<uint32_t>(vmovl_u16(v.raw)));
}
// Unsigned: zero-extend to half vector.
@@ -2155,9 +2297,9 @@ HWY_INLINE Vec128<uint64_t, N> PromoteTo
return Vec128<uint64_t, N>(vget_low_u64(vmovl_u32(v.raw)));
}
template <size_t N, HWY_IF_LE64(int16_t, N)>
-HWY_INLINE Vec128<int16_t, N> PromoteTo(Simd<int16_t, N> /* tag */,
+HWY_INLINE Vec128<int16_t, N> PromoteTo(Simd<int16_t, N> d,
const Vec128<uint8_t, N> v) {
- return Vec128<int16_t, N>(vget_low_s16(vmovl_u8(v.raw)));
+ return BitCast(d, Vec128<uint16_t, N>(vget_low_u16(vmovl_u8(v.raw))));
}
template <size_t N, HWY_IF_LE64(int32_t, N)>
HWY_INLINE Vec128<int32_t, N> PromoteTo(Simd<int32_t, N> /* tag */,
@@ -2220,12 +2362,14 @@ HWY_INLINE Vec128<int64_t, N> PromoteTo(
HWY_INLINE Vec128<float> PromoteTo(Full128<float> /* tag */,
const Vec128<float16_t, 4> v) {
- return Vec128<float>(vcvt_f32_f16(vreinterpret_f16_u16(v.raw)));
+ const float32x4_t f32 = vcvt_f32_f16(vreinterpret_f16_u16(v.raw));
+ return Vec128<float>(f32);
}
template <size_t N>
HWY_INLINE Vec128<float, N> PromoteTo(Simd<float, N> /* tag */,
const Vec128<float16_t, N> v) {
- return Vec128<float, N>(vget_low_f32(vcvt_f32_f16(v.raw)));
+ const float32x4_t f32 = vcvt_f32_f16(vreinterpret_f16_u16(v.raw));
+ return Vec128<float, N>(vget_low_f32(f32));
}
#else
@@ -2353,7 +2497,8 @@ HWY_INLINE Vec128<float16_t, 4> DemoteTo
template <size_t N>
HWY_INLINE Vec128<float16_t, N> DemoteTo(Simd<float16_t, N> /* tag */,
const Vec128<float, N> v) {
- return Vec128<float16_t, N>{vcvt_f16_f32(vcombine_f32(v.raw, v.raw))};
+ const float16x4_t f16 = vcvt_f16_f32(vcombine_f32(v.raw, v.raw));
+ return Vec128<float16_t, N>(vreinterpret_u16_f16(f16));
}
#else
@@ -2965,33 +3110,58 @@ HWY_INLINE Vec128<T, N> TableLookupBytes
BitCast(d8, from).raw)));
}
-// ------------------------------ Hard-coded shuffles
+// ------------------------------ TableLookupLanes
-// Notation: let Vec128<int32_t> have lanes 3,2,1,0 (0 is least-significant).
-// Shuffle0321 rotates one lane to the right (the previous least-significant
-// lane is now most-significant). These could also be implemented via
-// CombineShiftRightBytes but the shuffle_abcd notation is more convenient.
+// Returned by SetTableIndices for use by TableLookupLanes.
+template <typename T, size_t N>
+struct Indices128 {
+ typename detail::Raw128<T, N>::type raw;
+};
-// Swap 32-bit halves in 64-bits
-HWY_INLINE Vec128<uint32_t, 2> Shuffle2301(const Vec128<uint32_t, 2> v) {
- return Vec128<uint32_t, 2>(vrev64_u32(v.raw));
-}
-HWY_INLINE Vec128<int32_t, 2> Shuffle2301(const Vec128<int32_t, 2> v) {
- return Vec128<int32_t, 2>(vrev64_s32(v.raw));
-}
-HWY_INLINE Vec128<float, 2> Shuffle2301(const Vec128<float, 2> v) {
- return Vec128<float, 2>(vrev64_f32(v.raw));
+template <typename T, size_t N, HWY_IF_LE128(T, N)>
+HWY_INLINE Indices128<T, N> SetTableIndices(Simd<T, N> d, const int32_t* idx) {
+#if !defined(NDEBUG) || defined(ADDRESS_SANITIZER)
+ for (size_t i = 0; i < N; ++i) {
+ HWY_DASSERT(0 <= idx[i] && idx[i] < static_cast<int32_t>(N));
+ }
+#endif
+
+ const Repartition<uint8_t, decltype(d)> d8;
+ alignas(16) uint8_t control[16] = {0};
+ for (size_t idx_lane = 0; idx_lane < N; ++idx_lane) {
+ for (size_t idx_byte = 0; idx_byte < sizeof(T); ++idx_byte) {
+ control[idx_lane * sizeof(T) + idx_byte] =
+ static_cast<uint8_t>(idx[idx_lane] * sizeof(T) + idx_byte);
+ }
+ }
+ return Indices128<T, N>{BitCast(d, Load(d8, control)).raw};
}
-HWY_INLINE Vec128<uint32_t> Shuffle2301(const Vec128<uint32_t> v) {
- return Vec128<uint32_t>(vrev64q_u32(v.raw));
+
+template <size_t N>
+HWY_INLINE Vec128<uint32_t, N> TableLookupLanes(
+ const Vec128<uint32_t, N> v, const Indices128<uint32_t, N> idx) {
+ return TableLookupBytes(v, Vec128<uint32_t, N>{idx.raw});
}
-HWY_INLINE Vec128<int32_t> Shuffle2301(const Vec128<int32_t> v) {
- return Vec128<int32_t>(vrev64q_s32(v.raw));
+template <size_t N>
+HWY_INLINE Vec128<int32_t, N> TableLookupLanes(
+ const Vec128<int32_t, N> v, const Indices128<int32_t, N> idx) {
+ return TableLookupBytes(v, Vec128<int32_t, N>{idx.raw});
}
-HWY_INLINE Vec128<float> Shuffle2301(const Vec128<float> v) {
- return Vec128<float>(vrev64q_f32(v.raw));
+template <size_t N>
+HWY_INLINE Vec128<float, N> TableLookupLanes(const Vec128<float, N> v,
+ const Indices128<float, N> idx) {
+ const Simd<int32_t, N> di;
+ const auto idx_i = BitCast(di, Vec128<float, N>{idx.raw});
+ return BitCast(Simd<float, N>(), TableLookupBytes(BitCast(di, v), idx_i));
}
+// ------------------------------ Other shuffles (TableLookupBytes)
+
+// Notation: let Vec128<int32_t> have lanes 3,2,1,0 (0 is least-significant).
+// Shuffle0321 rotates one lane to the right (the previous least-significant
+// lane is now most-significant). These could also be implemented via
+// CombineShiftRightBytes but the shuffle_abcd notation is more convenient.
+
// Swap 64-bit halves
template <typename T>
HWY_INLINE Vec128<T> Shuffle1032(const Vec128<T> v) {
@@ -3029,49 +3199,6 @@ HWY_INLINE Vec128<T> Shuffle0123(const V
return TableLookupBytes(v, BitCast(d, Load(d8, bytes)));
}
-// ------------------------------ TableLookupLanes
-
-// Returned by SetTableIndices for use by TableLookupLanes.
-template <typename T>
-struct Indices128 {
- typename Raw128<T, 16 / sizeof(T)>::type raw;
-};
-
-template <typename T>
-HWY_INLINE Indices128<T> SetTableIndices(const Full128<T>, const int32_t* idx) {
-#if !defined(NDEBUG) || defined(ADDRESS_SANITIZER)
- const size_t N = 16 / sizeof(T);
- for (size_t i = 0; i < N; ++i) {
- HWY_DASSERT(0 <= idx[i] && idx[i] < static_cast<int32_t>(N));
- }
-#endif
-
- const Full128<uint8_t> d8;
- alignas(16) uint8_t control[16];
- for (size_t idx_byte = 0; idx_byte < 16; ++idx_byte) {
- const size_t idx_lane = idx_byte / sizeof(T);
- const size_t mod = idx_byte % sizeof(T);
- control[idx_byte] = idx[idx_lane] * sizeof(T) + mod;
- }
- return Indices128<T>{BitCast(Full128<T>(), Load(d8, control)).raw};
-}
-
-HWY_INLINE Vec128<uint32_t> TableLookupLanes(const Vec128<uint32_t> v,
- const Indices128<uint32_t> idx) {
- return TableLookupBytes(v, Vec128<uint32_t>(idx.raw));
-}
-HWY_INLINE Vec128<int32_t> TableLookupLanes(const Vec128<int32_t> v,
- const Indices128<int32_t> idx) {
- return TableLookupBytes(v, Vec128<int32_t>(idx.raw));
-}
-HWY_INLINE Vec128<float> TableLookupLanes(const Vec128<float> v,
- const Indices128<float> idx) {
- const Full128<int32_t> di;
- const Full128<float> df;
- return BitCast(df,
- TableLookupBytes(BitCast(di, v), Vec128<int32_t>(idx.raw)));
-}
-
// ------------------------------ Interleave lanes
// Interleaves lanes from halves of the 128-bit blocks of "a" (which provides
@@ -3334,16 +3461,6 @@ HWY_INLINE Vec128<T> OddEven(const Vec12
// ================================================== MISC
-// Returns a vector with lane i=[0, N) set to "first" + i.
-template <typename T, size_t N, typename T2>
-Vec128<T, N> Iota(const Simd<T, N> d, const T2 first) {
- HWY_ALIGN T lanes[16 / sizeof(T)];
- for (size_t i = 0; i < 16 / sizeof(T); ++i) {
- lanes[i] = static_cast<T>(first + static_cast<T2>(i));
- }
- return Load(d, lanes);
-}
-
// ------------------------------ Scatter (Store)
template <typename T, size_t N, typename Offset, HWY_IF_LE128(T, N)>
@@ -3413,52 +3530,44 @@ HWY_API Vec128<T, N> GatherIndex(const S
return Load(d, lanes);
}
-// ------------------------------ ARMv7 int64 comparisons (requires Shuffle2301)
+// ------------------------------ Reductions
-#if HWY_ARCH_ARM_V7
+namespace detail {
-template <size_t N>
-HWY_INLINE Mask128<int64_t, N> operator==(const Vec128<int64_t, N> a,
- const Vec128<int64_t, N> b) {
- const Simd<int32_t, N * 2> d32;
- const Simd<int64_t, N> d64;
- const auto cmp32 = VecFromMask(d32, BitCast(d32, a) == BitCast(d32, b));
- const auto cmp64 = cmp32 & Shuffle2301(cmp32);
- return MaskFromVec(BitCast(d64, cmp64));
+// N=1 for any T: no-op
+template <typename T>
+HWY_API Vec128<T, 1> SumOfLanes(const Vec128<T, 1> v) {
+ return v;
}
-
-template <size_t N>
-HWY_INLINE Mask128<uint64_t, N> operator==(const Vec128<uint64_t, N> a,
- const Vec128<uint64_t, N> b) {
- const Simd<uint32_t, N * 2> d32;
- const Simd<uint64_t, N> d64;
- const auto cmp32 = VecFromMask(d32, BitCast(d32, a) == BitCast(d32, b));
- const auto cmp64 = cmp32 & Shuffle2301(cmp32);
- return MaskFromVec(BitCast(d64, cmp64));
+template <typename T>
+HWY_API Vec128<T, 1> MinOfLanes(hwy::SizeTag<sizeof(T)> /* tag */,
+ const Vec128<T, 1> v) {
+ return v;
+}
+template <typename T>
+HWY_API Vec128<T, 1> MaxOfLanes(hwy::SizeTag<sizeof(T)> /* tag */,
+ const Vec128<T, 1> v) {
+ return v;
}
-HWY_INLINE Mask128<int64_t> operator<(const Vec128<int64_t> a,
- const Vec128<int64_t> b) {
- const int64x2_t sub = vqsubq_s64(a.raw, b.raw);
- return MaskFromVec(BroadcastSignBit(Vec128<int64_t>(sub)));
+// u32/i32/f32: N=2
+template <typename T, HWY_IF_LANE_SIZE(T, 4)>
+HWY_API Vec128<T, 2> SumOfLanes(const Vec128<T, 2> v10) {
+ return v10 + Shuffle2301(v10);
}
-HWY_INLINE Mask128<int64_t, 1> operator<(const Vec128<int64_t, 1> a,
- const Vec128<int64_t, 1> b) {
- const int64x1_t sub = vqsub_s64(a.raw, b.raw);
- return MaskFromVec(BroadcastSignBit(Vec128<int64_t, 1>(sub)));
+template <typename T>
+HWY_API Vec128<T, 2> MinOfLanes(hwy::SizeTag<4> /* tag */,
+ const Vec128<T, 2> v10) {
+ return Min(v10, Shuffle2301(v10));
}
-
-template <size_t N>
-HWY_INLINE Mask128<int64_t, N> operator>(const Vec128<int64_t, N> a,
- const Vec128<int64_t, N> b) {
- return b < a;
+template <typename T>
+HWY_API Vec128<T, 2> MaxOfLanes(hwy::SizeTag<4> /* tag */,
+ const Vec128<T, 2> v10) {
+ return Max(v10, Shuffle2301(v10));
}
-#endif
-
-// ------------------------------ Reductions
+// full vectors
#if HWY_ARCH_ARM_A64
-// Supported for 32b and 64b vector types. Returns the sum in each lane.
HWY_INLINE Vec128<uint32_t> SumOfLanes(const Vec128<uint32_t> v) {
return Vec128<uint32_t>(vdupq_n_u32(vaddvq_u32(v.raw)));
}
@@ -3505,20 +3614,15 @@ HWY_INLINE Vec128<int64_t> SumOfLanes(co
}
#endif
-namespace detail {
-
-// For u32/i32/f32.
-template <typename T, size_t N>
-HWY_API Vec128<T, N> MinOfLanes(hwy::SizeTag<4> /* tag */,
- const Vec128<T, N> v3210) {
+template <typename T>
+HWY_API Vec128<T> MinOfLanes(hwy::SizeTag<4> /* tag */, const Vec128<T> v3210) {
const Vec128<T> v1032 = Shuffle1032(v3210);
const Vec128<T> v31_20_31_20 = Min(v3210, v1032);
const Vec128<T> v20_31_20_31 = Shuffle0321(v31_20_31_20);
return Min(v20_31_20_31, v31_20_31_20);
}
-template <typename T, size_t N>
-HWY_API Vec128<T, N> MaxOfLanes(hwy::SizeTag<4> /* tag */,
- const Vec128<T, N> v3210) {
+template <typename T>
+HWY_API Vec128<T> MaxOfLanes(hwy::SizeTag<4> /* tag */, const Vec128<T> v3210) {
const Vec128<T> v1032 = Shuffle1032(v3210);
const Vec128<T> v31_20_31_20 = Max(v3210, v1032);
const Vec128<T> v20_31_20_31 = Shuffle0321(v31_20_31_20);
@@ -3526,15 +3630,13 @@ HWY_API Vec128<T, N> MaxOfLanes(hwy::Siz
}
// For u64/i64[/f64].
-template <typename T, size_t N>
-HWY_API Vec128<T, N> MinOfLanes(hwy::SizeTag<8> /* tag */,
- const Vec128<T, N> v10) {
+template <typename T>
+HWY_API Vec128<T> MinOfLanes(hwy::SizeTag<8> /* tag */, const Vec128<T> v10) {
const Vec128<T> v01 = Shuffle01(v10);
return Min(v10, v01);
}
-template <typename T, size_t N>
-HWY_API Vec128<T, N> MaxOfLanes(hwy::SizeTag<8> /* tag */,
- const Vec128<T, N> v10) {
+template <typename T>
+HWY_API Vec128<T> MaxOfLanes(hwy::SizeTag<8> /* tag */, const Vec128<T> v10) {
const Vec128<T> v01 = Shuffle01(v10);
return Max(v10, v01);
}
@@ -3542,6 +3644,10 @@ HWY_API Vec128<T, N> MaxOfLanes(hwy::Siz
} // namespace detail
template <typename T, size_t N>
+HWY_API Vec128<T, N> SumOfLanes(const Vec128<T, N> v) {
+ return detail::SumOfLanes(v);
+}
+template <typename T, size_t N>
HWY_API Vec128<T, N> MinOfLanes(const Vec128<T, N> v) {
return detail::MinOfLanes(hwy::SizeTag<sizeof(T)>(), v);
}
@@ -3569,13 +3675,13 @@ HWY_INLINE uint64_t BitsFromMask(hwy::Si
const uint8x8_t x2 = vget_low_u8(vpaddq_u8(values.raw, values.raw));
const uint8x8_t x4 = vpadd_u8(x2, x2);
const uint8x8_t x8 = vpadd_u8(x4, x4);
- return vreinterpret_u16_u8(x8)[0];
+ return vget_lane_u64(vreinterpret_u64_u8(x8), 0);
#else
// Don't have vpaddq, so keep doubling lane size.
const uint16x8_t x2 = vpaddlq_u8(values.raw);
const uint32x4_t x4 = vpaddlq_u16(x2);
const uint64x2_t x8 = vpaddlq_u32(x4);
- return (uint64_t(x8[1]) << 8) | x8[0];
+ return (vgetq_lane_u64(x8, 1) << 8) | vgetq_lane_u64(x8, 0);
#endif
}
@@ -3725,7 +3831,7 @@ HWY_INLINE size_t CountTrue(hwy::SizeTag
const int16x8_t x2 = vpaddlq_s8(ones);
const int32x4_t x4 = vpaddlq_s16(x2);
const int64x2_t x8 = vpaddlq_s32(x4);
- return x8[0] + x8[1];
+ return vgetq_lane_s64(x8, 0) + vgetq_lane_s64(x8, 1);
#endif
}
template <typename T>
@@ -3739,7 +3845,7 @@ HWY_INLINE size_t CountTrue(hwy::SizeTag
#else
const int32x4_t x2 = vpaddlq_s16(ones);
const int64x2_t x4 = vpaddlq_s32(x2);
- return x4[0] + x4[1];
+ return vgetq_lane_s64(x4, 0) + vgetq_lane_s64(x4, 1);
#endif
}
@@ -3753,7 +3859,7 @@ HWY_INLINE size_t CountTrue(hwy::SizeTag
return vaddvq_s32(ones);
#else
const int64x2_t x2 = vpaddlq_s32(ones);
- return x2[0] + x2[1];
+ return vgetq_lane_s64(x2, 0) + vgetq_lane_s64(x2, 1);
#endif
}
@@ -3765,10 +3871,10 @@ HWY_INLINE size_t CountTrue(hwy::SizeTag
vnegq_s64(BitCast(di, VecFromMask(Full128<T>(), mask)).raw);
return vaddvq_s64(ones);
#else
- const Full128<int64_t> di;
- const int64x2_t ones =
- vshrq_n_u64(BitCast(di, VecFromMask(Full128<T>(), mask)).raw, 63);
- return ones[0] + ones[1];
+ const Full128<uint64_t> du;
+ const auto mask_u = VecFromMask(du, RebindMask(du, mask));
+ const uint64x2_t ones = vshrq_n_u64(mask_u.raw, 63);
+ return vgetq_lane_u64(ones, 0) + vgetq_lane_u64(ones, 1);
#endif
}
@@ -3798,11 +3904,13 @@ HWY_INLINE size_t StoreMaskBits(const Ma
template <typename T>
HWY_INLINE bool AllFalse(const Mask128<T> m) {
#if HWY_ARCH_ARM_A64
- return (vmaxvq_u32(m.raw) == 0);
+ const Full128<uint32_t> d32;
+ const auto m32 = MaskFromVec(BitCast(d32, VecFromMask(Full128<T>(), m)));
+ return (vmaxvq_u32(m32.raw) == 0);
#else
const auto v64 = BitCast(Full128<uint64_t>(), VecFromMask(Full128<T>(), m));
uint32x2_t a = vqmovn_u64(v64.raw);
- return vreinterpret_u64_u32(a)[0] == 0;
+ return vget_lane_u64(vreinterpret_u64_u32(a), 0) == 0;
#endif
}
@@ -4178,6 +4286,7 @@ HWY_API auto Le(V a, V b) -> decltype(a
return a <= b;
}
+namespace detail { // for code folding
#if HWY_ARCH_ARM_V7
#undef vuzp1_s8
#undef vuzp1_u8
@@ -4265,6 +4374,7 @@ HWY_API auto Le(V a, V b) -> decltype(a
#undef HWY_NEON_DEF_FUNCTION_UINT_8_16_32
#undef HWY_NEON_DEF_FUNCTION_UINTS
#undef HWY_NEON_EVAL
+} // namespace detail
// NOLINTNEXTLINE(google-readability-namespace-comments)
} // namespace HWY_NAMESPACE
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/ops/rvv-inl.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/ops/rvv-inl.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/ops/rvv-inl.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/ops/rvv-inl.h 2021-07-26 17:10:30.290171587 -0400
@@ -39,6 +39,11 @@ using TFromV = TFromD<DFromV<V>>;
hwy::EnableIf<IsSigned<TFromV<V>>() && !IsFloat<TFromV<V>>()>* = nullptr
#define HWY_IF_FLOAT_V(V) hwy::EnableIf<IsFloat<TFromV<V>>()>* = nullptr
+// kShift = log2 of multiplier: 0 for m1, 1 for m2, -2 for mf4
+template <typename T, int kShift = 0>
+using Full = Simd<T, (kShift < 0) ? (HWY_LANES(T) >> (-kShift))
+ : (HWY_LANES(T) << kShift)>;
+
// ================================================== MACROS
// Generate specializations and function definitions using X macros. Although
@@ -58,29 +63,30 @@ namespace detail { // for code folding
// For given SEW, iterate over all LMUL. Precompute SEW/LMUL => MLEN because the
// preprocessor cannot easily do it.
-#define HWY_RVV_FOREACH_08(X_MACRO, BASE, CHAR, NAME, OP) \
- X_MACRO(BASE, CHAR, 8, 1, 8, NAME, OP) \
- X_MACRO(BASE, CHAR, 8, 2, 4, NAME, OP) \
- X_MACRO(BASE, CHAR, 8, 4, 2, NAME, OP) \
- X_MACRO(BASE, CHAR, 8, 8, 1, NAME, OP)
-
-#define HWY_RVV_FOREACH_16(X_MACRO, BASE, CHAR, NAME, OP) \
- X_MACRO(BASE, CHAR, 16, 1, 16, NAME, OP) \
- X_MACRO(BASE, CHAR, 16, 2, 8, NAME, OP) \
- X_MACRO(BASE, CHAR, 16, 4, 4, NAME, OP) \
- X_MACRO(BASE, CHAR, 16, 8, 2, NAME, OP)
-
-#define HWY_RVV_FOREACH_32(X_MACRO, BASE, CHAR, NAME, OP) \
- X_MACRO(BASE, CHAR, 32, 1, 32, NAME, OP) \
- X_MACRO(BASE, CHAR, 32, 2, 16, NAME, OP) \
- X_MACRO(BASE, CHAR, 32, 4, 8, NAME, OP) \
- X_MACRO(BASE, CHAR, 32, 8, 4, NAME, OP)
-
-#define HWY_RVV_FOREACH_64(X_MACRO, BASE, CHAR, NAME, OP) \
- X_MACRO(BASE, CHAR, 64, 1, 64, NAME, OP) \
- X_MACRO(BASE, CHAR, 64, 2, 32, NAME, OP) \
- X_MACRO(BASE, CHAR, 64, 4, 16, NAME, OP) \
- X_MACRO(BASE, CHAR, 64, 8, 8, NAME, OP)
+// TODO(janwas): GCC does not yet support fractional LMUL
+#define HWY_RVV_FOREACH_08(X_MACRO, BASE, CHAR, NAME, OP) \
+ X_MACRO(BASE, CHAR, 8, m1, /*kShift=*/0, /*MLEN=*/8, NAME, OP) \
+ X_MACRO(BASE, CHAR, 8, m2, /*kShift=*/1, /*MLEN=*/4, NAME, OP) \
+ X_MACRO(BASE, CHAR, 8, m4, /*kShift=*/2, /*MLEN=*/2, NAME, OP) \
+ X_MACRO(BASE, CHAR, 8, m8, /*kShift=*/3, /*MLEN=*/1, NAME, OP)
+
+#define HWY_RVV_FOREACH_16(X_MACRO, BASE, CHAR, NAME, OP) \
+ X_MACRO(BASE, CHAR, 16, m1, /*kShift=*/0, /*MLEN=*/16, NAME, OP) \
+ X_MACRO(BASE, CHAR, 16, m2, /*kShift=*/1, /*MLEN=*/8, NAME, OP) \
+ X_MACRO(BASE, CHAR, 16, m4, /*kShift=*/2, /*MLEN=*/4, NAME, OP) \
+ X_MACRO(BASE, CHAR, 16, m8, /*kShift=*/3, /*MLEN=*/2, NAME, OP)
+
+#define HWY_RVV_FOREACH_32(X_MACRO, BASE, CHAR, NAME, OP) \
+ X_MACRO(BASE, CHAR, 32, m1, /*kShift=*/0, /*MLEN=*/32, NAME, OP) \
+ X_MACRO(BASE, CHAR, 32, m2, /*kShift=*/1, /*MLEN=*/16, NAME, OP) \
+ X_MACRO(BASE, CHAR, 32, m4, /*kShift=*/2, /*MLEN=*/8, NAME, OP) \
+ X_MACRO(BASE, CHAR, 32, m8, /*kShift=*/3, /*MLEN=*/4, NAME, OP)
+
+#define HWY_RVV_FOREACH_64(X_MACRO, BASE, CHAR, NAME, OP) \
+ X_MACRO(BASE, CHAR, 64, m1, /*kShift=*/0, /*MLEN=*/64, NAME, OP) \
+ X_MACRO(BASE, CHAR, 64, m2, /*kShift=*/1, /*MLEN=*/32, NAME, OP) \
+ X_MACRO(BASE, CHAR, 64, m4, /*kShift=*/2, /*MLEN=*/16, NAME, OP) \
+ X_MACRO(BASE, CHAR, 64, m8, /*kShift=*/3, /*MLEN=*/8, NAME, OP)
// SEW for unsigned:
#define HWY_RVV_FOREACH_U08(X_MACRO, NAME, OP) \
@@ -153,63 +159,61 @@ namespace detail { // for code folding
// Assemble types for use in x-macros
#define HWY_RVV_T(BASE, SEW) BASE##SEW##_t
-#define HWY_RVV_D(CHAR, SEW, LMUL) D##CHAR##SEW##m##LMUL
-#define HWY_RVV_V(BASE, SEW, LMUL) v##BASE##SEW##m##LMUL##_t
+#define HWY_RVV_D(CHAR, SEW, LMUL) D##CHAR##SEW##LMUL
+#define HWY_RVV_V(BASE, SEW, LMUL) v##BASE##SEW##LMUL##_t
#define HWY_RVV_M(MLEN) vbool##MLEN##_t
} // namespace detail
// TODO(janwas): remove typedefs and only use HWY_RVV_V etc. directly
-// TODO(janwas): do we want fractional LMUL? (can encode as negative)
-// Mixed-precision code can use LMUL 1..8 and that should be enough unless they
-// need many registers.
-#define HWY_SPECIALIZE(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- using HWY_RVV_D(CHAR, SEW, LMUL) = \
- Simd<HWY_RVV_T(BASE, SEW), HWY_LANES(HWY_RVV_T(BASE, SEW)) * LMUL>; \
- using V##CHAR##SEW##m##LMUL = HWY_RVV_V(BASE, SEW, LMUL); \
- template <> \
- struct DFromV_t<HWY_RVV_V(BASE, SEW, LMUL)> { \
- using Lane = HWY_RVV_T(BASE, SEW); \
- using type = Simd<Lane, HWY_LANES(Lane) * LMUL>; \
+// Until we have full intrinsic support for fractional LMUL, mixed-precision
+// code can use LMUL 1..8 (adequate unless they need many registers).
+#define HWY_SPECIALIZE(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ using HWY_RVV_D(CHAR, SEW, LMUL) = Full<HWY_RVV_T(BASE, SEW), SHIFT>; \
+ using V##CHAR##SEW##LMUL = HWY_RVV_V(BASE, SEW, LMUL); \
+ template <> \
+ struct DFromV_t<HWY_RVV_V(BASE, SEW, LMUL)> { \
+ using Lane = HWY_RVV_T(BASE, SEW); \
+ using type = Full<Lane, SHIFT>; \
};
using Vf16m1 = vfloat16m1_t;
using Vf16m2 = vfloat16m2_t;
using Vf16m4 = vfloat16m4_t;
using Vf16m8 = vfloat16m8_t;
-using Df16m1 = Simd<float16_t, HWY_LANES(uint16_t) * 1>;
-using Df16m2 = Simd<float16_t, HWY_LANES(uint16_t) * 2>;
-using Df16m4 = Simd<float16_t, HWY_LANES(uint16_t) * 4>;
-using Df16m8 = Simd<float16_t, HWY_LANES(uint16_t) * 8>;
+using Df16m1 = Full<float16_t, 0>;
+using Df16m2 = Full<float16_t, 1>;
+using Df16m4 = Full<float16_t, 2>;
+using Df16m8 = Full<float16_t, 3>;
HWY_RVV_FOREACH(HWY_SPECIALIZE, _, _)
#undef HWY_SPECIALIZE
// vector = f(d), e.g. Zero
-#define HWY_RVV_RETV_ARGD(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_RETV_ARGD(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) NAME(HWY_RVV_D(CHAR, SEW, LMUL) d) { \
(void)Lanes(d); \
- return v##OP##_##CHAR##SEW##m##LMUL(); \
+ return v##OP##_##CHAR##SEW##LMUL(); \
}
// vector = f(vector), e.g. Not
-#define HWY_RVV_RETV_ARGV(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_RETV_ARGV(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) NAME(HWY_RVV_V(BASE, SEW, LMUL) v) { \
- return v##OP##_v_##CHAR##SEW##m##LMUL(v); \
+ return v##OP##_v_##CHAR##SEW##LMUL(v); \
}
// vector = f(vector, scalar), e.g. detail::Add
-#define HWY_RVV_RETV_ARGVS(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
- NAME(HWY_RVV_V(BASE, SEW, LMUL) a, HWY_RVV_T(BASE, SEW) b) { \
- return v##OP##_##CHAR##SEW##m##LMUL(a, b); \
+#define HWY_RVV_RETV_ARGVS(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
+ NAME(HWY_RVV_V(BASE, SEW, LMUL) a, HWY_RVV_T(BASE, SEW) b) { \
+ return v##OP##_##CHAR##SEW##LMUL(a, b); \
}
// vector = f(vector, vector), e.g. Add
-#define HWY_RVV_RETV_ARGVV(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_RETV_ARGVV(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
NAME(HWY_RVV_V(BASE, SEW, LMUL) a, HWY_RVV_V(BASE, SEW, LMUL) b) { \
- return v##OP##_vv_##CHAR##SEW##m##LMUL(a, b); \
+ return v##OP##_vv_##CHAR##SEW##LMUL(a, b); \
}
// ================================================== INIT
@@ -218,9 +222,9 @@ HWY_RVV_FOREACH(HWY_SPECIALIZE, _, _)
// WARNING: we want to query VLMAX/sizeof(T), but this actually changes VL!
// vlenb is not exposed through intrinsics and vreadvl is not VLMAX.
-#define HWY_RVV_LANES(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API size_t NAME(HWY_RVV_D(CHAR, SEW, LMUL) /* d */) { \
- return v##OP##SEW##m##LMUL(); \
+#define HWY_RVV_LANES(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API size_t NAME(HWY_RVV_D(CHAR, SEW, LMUL) /* d */) { \
+ return v##OP##SEW##LMUL(); \
}
HWY_RVV_FOREACH(HWY_RVV_LANES, Lanes, setvlmax_e)
@@ -233,19 +237,31 @@ HWY_RVV_FOREACH(HWY_RVV_RETV_ARGD, Zero,
template <class D>
using VFromD = decltype(Zero(D()));
+// Partial
+template <typename T, size_t N, HWY_IF_LE128(T, N)>
+HWY_API VFromD<Full<T>> Zero(Simd<T, N> /*tag*/) {
+ return Zero(Full<T>());
+}
+
// ------------------------------ Set
// vector = f(d, scalar), e.g. Set
-#define HWY_RVV_SET(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_SET(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
NAME(HWY_RVV_D(CHAR, SEW, LMUL) d, HWY_RVV_T(BASE, SEW) arg) { \
(void)Lanes(d); \
- return v##OP##_##CHAR##SEW##m##LMUL(arg); \
+ return v##OP##_##CHAR##SEW##LMUL(arg); \
}
HWY_RVV_FOREACH_UI(HWY_RVV_SET, Set, mv_v_x)
HWY_RVV_FOREACH_F(HWY_RVV_SET, Set, fmv_v_f)
#undef HWY_RVV_SET
+// Partial vectors
+template <typename T, size_t N, HWY_IF_LE128(T, N)>
+HWY_API VFromD<Simd<T, N>> Set(Simd<T, N> /*tag*/, T arg) {
+ return Set(Full<T>(), arg);
+}
+
// ------------------------------ Undefined
// RVV vundefined is 'poisoned' such that even XORing a _variable_ initialized
@@ -265,7 +281,7 @@ HWY_API VFromD<D> Undefined(D d) {
namespace detail {
// u8: no change
-#define HWY_RVV_CAST_NOP(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_CAST_NOP(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
BitCastToByte(HWY_RVV_V(BASE, SEW, LMUL) v) { \
return v; \
@@ -276,25 +292,25 @@ namespace detail {
}
// Other integers
-#define HWY_RVV_CAST_UI(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API vuint8m##LMUL##_t BitCastToByte(HWY_RVV_V(BASE, SEW, LMUL) v) { \
- return v##OP##_v_##CHAR##SEW##m##LMUL##_u8m##LMUL(v); \
- } \
- HWY_API HWY_RVV_V(BASE, SEW, LMUL) BitCastFromByte( \
- HWY_RVV_D(CHAR, SEW, LMUL) /* d */, vuint8m##LMUL##_t v) { \
- return v##OP##_v_u8m##LMUL##_##CHAR##SEW##m##LMUL(v); \
+#define HWY_RVV_CAST_UI(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API vuint8##LMUL##_t BitCastToByte(HWY_RVV_V(BASE, SEW, LMUL) v) { \
+ return v##OP##_v_##CHAR##SEW##LMUL##_u8##LMUL(v); \
+ } \
+ HWY_API HWY_RVV_V(BASE, SEW, LMUL) BitCastFromByte( \
+ HWY_RVV_D(CHAR, SEW, LMUL) /* d */, vuint8##LMUL##_t v) { \
+ return v##OP##_v_u8##LMUL##_##CHAR##SEW##LMUL(v); \
}
// Float: first cast to/from unsigned
-#define HWY_RVV_CAST_F(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API vuint8m##LMUL##_t BitCastToByte(HWY_RVV_V(BASE, SEW, LMUL) v) { \
- return v##OP##_v_u##SEW##m##LMUL##_u8m##LMUL( \
- v##OP##_v_f##SEW##m##LMUL##_u##SEW##m##LMUL(v)); \
- } \
- HWY_API HWY_RVV_V(BASE, SEW, LMUL) BitCastFromByte( \
- HWY_RVV_D(CHAR, SEW, LMUL) /* d */, vuint8m##LMUL##_t v) { \
- return v##OP##_v_u##SEW##m##LMUL##_f##SEW##m##LMUL( \
- v##OP##_v_u8m##LMUL##_u##SEW##m##LMUL(v)); \
+#define HWY_RVV_CAST_F(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API vuint8##LMUL##_t BitCastToByte(HWY_RVV_V(BASE, SEW, LMUL) v) { \
+ return v##OP##_v_u##SEW##LMUL##_u8##LMUL( \
+ v##OP##_v_f##SEW##LMUL##_u##SEW##LMUL(v)); \
+ } \
+ HWY_API HWY_RVV_V(BASE, SEW, LMUL) BitCastFromByte( \
+ HWY_RVV_D(CHAR, SEW, LMUL) /* d */, vuint8##LMUL##_t v) { \
+ return v##OP##_v_u##SEW##LMUL##_f##SEW##LMUL( \
+ v##OP##_v_u8##LMUL##_u##SEW##LMUL(v)); \
}
HWY_RVV_FOREACH_U08(HWY_RVV_CAST_NOP, _, _)
@@ -315,6 +331,12 @@ HWY_API VFromD<D> BitCast(D d, FromV v)
return detail::BitCastFromByte(d, detail::BitCastToByte(v));
}
+// Partial
+template <typename T, size_t N, class FromV, HWY_IF_LE128(T, N)>
+HWY_API VFromD<Simd<T, N>> BitCast(Simd<T, N> /*tag*/, FromV v) {
+ return BitCast(Full<T>(), v);
+}
+
namespace detail {
template <class V, class DU = RebindToUnsigned<DFromV<V>>>
@@ -336,6 +358,12 @@ HWY_API VFromD<DU> Iota0(const D /*d*/)
return BitCastToUnsigned(Iota0(DU()));
}
+// Partial
+template <typename T, size_t N, HWY_IF_LE128(T, N)>
+HWY_API VFromD<Simd<T, N>> Iota0(Simd<T, N> /*tag*/) {
+ return Iota0(Full<T>());
+}
+
} // namespace detail
// ================================================== LOGICAL
@@ -370,11 +398,11 @@ HWY_API V And(const V a, const V b) {
// ------------------------------ Or
// Scalar argument plus mask. Used by VecFromMask.
-#define HWY_RVV_OR_MASK(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_OR_MASK(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
NAME(HWY_RVV_V(BASE, SEW, LMUL) v, HWY_RVV_T(BASE, SEW) imm, \
HWY_RVV_M(MLEN) mask, HWY_RVV_V(BASE, SEW, LMUL) maskedoff) { \
- return v##OP##_##CHAR##SEW##m##LMUL##_m(mask, maskedoff, v, imm); \
+ return v##OP##_##CHAR##SEW##LMUL##_m(mask, maskedoff, v, imm); \
}
namespace detail {
@@ -466,14 +494,14 @@ HWY_RVV_FOREACH_U16(HWY_RVV_RETV_ARGVV,
// ------------------------------ ShiftLeft[Same]
// Intrinsics do not define .vi forms, so use .vx instead.
-#define HWY_RVV_SHIFT(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- template <int kBits> \
- HWY_API HWY_RVV_V(BASE, SEW, LMUL) NAME(HWY_RVV_V(BASE, SEW, LMUL) v) { \
- return v##OP##_vx_##CHAR##SEW##m##LMUL(v, kBits); \
- } \
- HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
- NAME##Same(HWY_RVV_V(BASE, SEW, LMUL) v, int bits) { \
- return v##OP##_vx_##CHAR##SEW##m##LMUL(v, static_cast<uint8_t>(bits)); \
+#define HWY_RVV_SHIFT(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ template <int kBits> \
+ HWY_API HWY_RVV_V(BASE, SEW, LMUL) NAME(HWY_RVV_V(BASE, SEW, LMUL) v) { \
+ return v##OP##_vx_##CHAR##SEW##LMUL(v, kBits); \
+ } \
+ HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
+ NAME##Same(HWY_RVV_V(BASE, SEW, LMUL) v, int bits) { \
+ return v##OP##_vx_##CHAR##SEW##LMUL(v, static_cast<uint8_t>(bits)); \
}
HWY_RVV_FOREACH_UI(HWY_RVV_SHIFT, ShiftLeft, sll)
@@ -486,19 +514,18 @@ HWY_RVV_FOREACH_I(HWY_RVV_SHIFT, ShiftRi
#undef HWY_RVV_SHIFT
// ------------------------------ Shl
-#define HWY_RVV_SHIFT_VV(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_SHIFT_VV(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
NAME(HWY_RVV_V(BASE, SEW, LMUL) v, HWY_RVV_V(BASE, SEW, LMUL) bits) { \
- return v##OP##_vv_##CHAR##SEW##m##LMUL(v, bits); \
+ return v##OP##_vv_##CHAR##SEW##LMUL(v, bits); \
}
HWY_RVV_FOREACH_U(HWY_RVV_SHIFT_VV, Shl, sll)
-#define HWY_RVV_SHIFT_II(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_SHIFT_II(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
NAME(HWY_RVV_V(BASE, SEW, LMUL) v, HWY_RVV_V(BASE, SEW, LMUL) bits) { \
- return v##OP##_vv_##CHAR##SEW##m##LMUL(v, \
- detail::BitCastToUnsigned(bits)); \
+ return v##OP##_vv_##CHAR##SEW##LMUL(v, detail::BitCastToUnsigned(bits)); \
}
HWY_RVV_FOREACH_I(HWY_RVV_SHIFT_II, Shl, sll)
@@ -569,11 +596,11 @@ HWY_API V ApproximateReciprocalSqrt(cons
// ------------------------------ MulAdd
// Note: op is still named vv, not vvv.
-#define HWY_RVV_FMA(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_FMA(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
NAME(HWY_RVV_V(BASE, SEW, LMUL) mul, HWY_RVV_V(BASE, SEW, LMUL) x, \
HWY_RVV_V(BASE, SEW, LMUL) add) { \
- return v##OP##_vv_##CHAR##SEW##m##LMUL(add, mul, x); \
+ return v##OP##_vv_##CHAR##SEW##LMUL(add, mul, x); \
}
HWY_RVV_FOREACH_F(HWY_RVV_FMA, MulAdd, fmacc)
@@ -596,11 +623,11 @@ HWY_RVV_FOREACH_F(HWY_RVV_FMA, NegMulSub
// of all bits; SLEN 8 / LMUL 4 = half of all bits.
// mask = f(vector, vector)
-#define HWY_RVV_RETM_ARGVV(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_RETM_ARGVV(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_M(MLEN) \
NAME(HWY_RVV_V(BASE, SEW, LMUL) a, HWY_RVV_V(BASE, SEW, LMUL) b) { \
(void)Lanes(DFromV<decltype(a)>()); \
- return v##OP##_vv_##CHAR##SEW##m##LMUL##_b##MLEN(a, b); \
+ return v##OP##_vv_##CHAR##SEW##LMUL##_b##MLEN(a, b); \
}
// ------------------------------ Eq
@@ -675,11 +702,11 @@ HWY_RVV_FOREACH_B(HWY_RVV_RETM_ARGMM, Xo
#undef HWY_RVV_RETM_ARGMM
// ------------------------------ IfThenElse
-#define HWY_RVV_IF_THEN_ELSE(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
- NAME(HWY_RVV_M(MLEN) m, HWY_RVV_V(BASE, SEW, LMUL) yes, \
- HWY_RVV_V(BASE, SEW, LMUL) no) { \
- return v##OP##_vvm_##CHAR##SEW##m##LMUL(m, no, yes); \
+#define HWY_RVV_IF_THEN_ELSE(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
+ NAME(HWY_RVV_M(MLEN) m, HWY_RVV_V(BASE, SEW, LMUL) yes, \
+ HWY_RVV_V(BASE, SEW, LMUL) no) { \
+ return v##OP##_vvm_##CHAR##SEW##LMUL(m, no, yes); \
}
HWY_RVV_FOREACH(HWY_RVV_IF_THEN_ELSE, IfThenElse, merge)
@@ -774,17 +801,17 @@ HWY_RVV_FOREACH_B(HWY_RVV_COUNT_TRUE, _,
// ------------------------------ Load
-#define HWY_RVV_LOAD(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
- NAME(HWY_RVV_D(CHAR, SEW, LMUL) d, \
- const HWY_RVV_T(BASE, SEW) * HWY_RESTRICT p) { \
- (void)Lanes(d); \
- return v##OP##SEW##_v_##CHAR##SEW##m##LMUL(p); \
+#define HWY_RVV_LOAD(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
+ NAME(HWY_RVV_D(CHAR, SEW, LMUL) d, \
+ const HWY_RVV_T(BASE, SEW) * HWY_RESTRICT p) { \
+ (void)Lanes(d); \
+ return v##OP##SEW##_v_##CHAR##SEW##LMUL(p); \
}
HWY_RVV_FOREACH(HWY_RVV_LOAD, Load, le)
#undef HWY_RVV_LOAD
-// Partial load
+// Partial
template <typename T, size_t N, HWY_IF_LE128(T, N)>
HWY_API VFromD<Simd<T, N>> Load(Simd<T, N> d, const T* HWY_RESTRICT p) {
return Load(d, p);
@@ -800,16 +827,22 @@ HWY_API VFromD<D> LoadU(D d, const TFrom
// ------------------------------ Store
-#define HWY_RVV_RET_ARGVDP(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API void NAME(HWY_RVV_V(BASE, SEW, LMUL) v, \
- HWY_RVV_D(CHAR, SEW, LMUL) d, \
- HWY_RVV_T(BASE, SEW) * HWY_RESTRICT p) { \
- (void)Lanes(d); \
- return v##OP##SEW##_v_##CHAR##SEW##m##LMUL(p, v); \
+#define HWY_RVV_RET_ARGVDP(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API void NAME(HWY_RVV_V(BASE, SEW, LMUL) v, \
+ HWY_RVV_D(CHAR, SEW, LMUL) d, \
+ HWY_RVV_T(BASE, SEW) * HWY_RESTRICT p) { \
+ (void)Lanes(d); \
+ return v##OP##SEW##_v_##CHAR##SEW##LMUL(p, v); \
}
HWY_RVV_FOREACH(HWY_RVV_RET_ARGVDP, Store, se)
#undef HWY_RVV_RET_ARGVDP
+// Partial
+template <typename T, size_t N, HWY_IF_LE128(T, N)>
+HWY_API void Store(VFromD<Simd<T, N>> v, Simd<T, N> d, T* HWY_RESTRICT p) {
+ return Store(v, Full<T>(), p);
+}
+
// ------------------------------ StoreU
// RVV only requires lane alignment, not natural alignment of the entire vector.
@@ -963,67 +996,6 @@ HWY_API VFromD<Simd<int32_t, N>> Promote
return BitCast(d, PromoteTo(Simd<uint32_t, N>(), v));
}
-// ------------------------------ PromoteTo I
-
-HWY_API Vi16m2 PromoteTo(Di16m2 /* d */, Vi8m1 v) { return vsext_vf2_i16m2(v); }
-HWY_API Vi16m4 PromoteTo(Di16m4 /* d */, Vi8m2 v) { return vsext_vf2_i16m4(v); }
-HWY_API Vi16m8 PromoteTo(Di16m8 /* d */, Vi8m4 v) { return vsext_vf2_i16m8(v); }
-
-HWY_API Vi32m4 PromoteTo(Di32m4 /* d */, Vi8m1 v) { return vsext_vf4_i32m4(v); }
-HWY_API Vi32m8 PromoteTo(Di32m8 /* d */, Vi8m2 v) { return vsext_vf4_i32m8(v); }
-
-HWY_API Vi32m2 PromoteTo(Di32m2 /* d */, const Vi16m1 v) {
- return vsext_vf2_i32m2(v);
-}
-HWY_API Vi32m4 PromoteTo(Di32m4 /* d */, const Vi16m2 v) {
- return vsext_vf2_i32m4(v);
-}
-HWY_API Vi32m8 PromoteTo(Di32m8 /* d */, const Vi16m4 v) {
- return vsext_vf2_i32m8(v);
-}
-
-HWY_API Vi64m2 PromoteTo(Di64m2 /* d */, const Vi32m1 v) {
- return vsext_vf2_i64m2(v);
-}
-HWY_API Vi64m4 PromoteTo(Di64m4 /* d */, const Vi32m2 v) {
- return vsext_vf2_i64m4(v);
-}
-HWY_API Vi64m8 PromoteTo(Di64m8 /* d */, const Vi32m4 v) {
- return vsext_vf2_i64m8(v);
-}
-
-// ------------------------------ PromoteTo F
-
-HWY_API Vf32m2 PromoteTo(Df32m2 /* d */, const Vf16m1 v) {
- return vfwcvt_f_f_v_f32m2(v);
-}
-HWY_API Vf32m4 PromoteTo(Df32m4 /* d */, const Vf16m2 v) {
- return vfwcvt_f_f_v_f32m4(v);
-}
-HWY_API Vf32m8 PromoteTo(Df32m8 /* d */, const Vf16m4 v) {
- return vfwcvt_f_f_v_f32m8(v);
-}
-
-HWY_API Vf64m2 PromoteTo(Df64m2 /* d */, const Vf32m1 v) {
- return vfwcvt_f_f_v_f64m2(v);
-}
-HWY_API Vf64m4 PromoteTo(Df64m4 /* d */, const Vf32m2 v) {
- return vfwcvt_f_f_v_f64m4(v);
-}
-HWY_API Vf64m8 PromoteTo(Df64m8 /* d */, const Vf32m4 v) {
- return vfwcvt_f_f_v_f64m8(v);
-}
-
-HWY_API Vf64m2 PromoteTo(Df64m2 /* d */, const Vi32m1 v) {
- return vfwcvt_f_x_v_f64m2(v);
-}
-HWY_API Vf64m4 PromoteTo(Df64m4 /* d */, const Vi32m2 v) {
- return vfwcvt_f_x_v_f64m4(v);
-}
-HWY_API Vf64m8 PromoteTo(Df64m8 /* d */, const Vi32m4 v) {
- return vfwcvt_f_x_v_f64m8(v);
-}
-
// ------------------------------ DemoteTo U
// First clamp negative numbers to zero to match x86 packus.
@@ -1124,19 +1096,19 @@ HWY_API Vi32m4 DemoteTo(Di32m4 /* d */,
// ------------------------------ ConvertTo F
-#define HWY_RVV_CONVERT(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_CONVERT(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) ConvertTo( \
HWY_RVV_D(CHAR, SEW, LMUL) /* d */, HWY_RVV_V(int, SEW, LMUL) v) { \
- return vfcvt_f_x_v_f##SEW##m##LMUL(v); \
+ return vfcvt_f_x_v_f##SEW##LMUL(v); \
} \
/* Truncates (rounds toward zero). */ \
HWY_API HWY_RVV_V(int, SEW, LMUL) ConvertTo(HWY_RVV_D(i, SEW, LMUL) /* d */, \
HWY_RVV_V(BASE, SEW, LMUL) v) { \
- return vfcvt_rtz_x_f_v_i##SEW##m##LMUL(v); \
+ return vfcvt_rtz_x_f_v_i##SEW##LMUL(v); \
} \
/* Uses default rounding mode. */ \
HWY_API HWY_RVV_V(int, SEW, LMUL) NearestInt(HWY_RVV_V(BASE, SEW, LMUL) v) { \
- return vfcvt_x_f_v_i##SEW##m##LMUL(v); \
+ return vfcvt_x_f_v_i##SEW##LMUL(v); \
}
// API only requires f32 but we provide f64 for internal use (otherwise, it
@@ -1184,10 +1156,10 @@ HWY_API VFromD<DU> SetTableIndices(D d,
// <32bit are not part of Highway API, but used in Broadcast. This limits VLMAX
// to 2048! We could instead use vrgatherei16.
-#define HWY_RVV_TABLE(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_TABLE(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
NAME(HWY_RVV_V(BASE, SEW, LMUL) v, HWY_RVV_V(uint, SEW, LMUL) idx) { \
- return v##OP##_vv_##CHAR##SEW##m##LMUL(v, idx); \
+ return v##OP##_vv_##CHAR##SEW##LMUL(v, idx); \
}
HWY_RVV_FOREACH(HWY_RVV_TABLE, TableLookupLanes, rgather)
@@ -1279,7 +1251,6 @@ HWY_API V OffsetsOf128BitBlocks(const D
using T = MakeUnsigned<TFromD<D>>;
return detail::And(iota0, static_cast<T>(~(LanesPerBlock(d) - 1)));
}
-
} // namespace detail
template <class V>
@@ -1307,9 +1278,9 @@ HWY_API V Broadcast(const V v) {
// ------------------------------ GetLane
-#define HWY_RVV_GET_LANE(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API HWY_RVV_T(BASE, SEW) NAME(HWY_RVV_V(BASE, SEW, LMUL) v) { \
- return v##OP##_s_##CHAR##SEW##m##LMUL##_##CHAR##SEW(v); \
+#define HWY_RVV_GET_LANE(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API HWY_RVV_T(BASE, SEW) NAME(HWY_RVV_V(BASE, SEW, LMUL) v) { \
+ return v##OP##_s_##CHAR##SEW##LMUL##_##CHAR##SEW(v); \
}
HWY_RVV_FOREACH_UI(HWY_RVV_GET_LANE, GetLane, mv_x)
@@ -1318,11 +1289,12 @@ HWY_RVV_FOREACH_F(HWY_RVV_GET_LANE, GetL
// ------------------------------ ShiftLeftLanes
-// vector = f(vector, size_t)
-#define HWY_RVV_SLIDE(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
- NAME(HWY_RVV_V(BASE, SEW, LMUL) v, size_t lanes) { \
- return v##OP##_vx_##CHAR##SEW##m##LMUL(v, v, lanes); \
+// vector = f(vector, vector, size_t)
+#define HWY_RVV_SLIDE(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
+ NAME(HWY_RVV_V(BASE, SEW, LMUL) dst, HWY_RVV_V(BASE, SEW, LMUL) src, \
+ size_t lanes) { \
+ return v##OP##_vx_##CHAR##SEW##LMUL(dst, src, lanes); \
}
namespace detail {
@@ -1333,7 +1305,7 @@ template <size_t kLanes, class V>
HWY_API V ShiftLeftLanes(const V v) {
using D = DFromV<V>;
const RebindToSigned<D> di;
- const auto shifted = detail::SlideUp(v, kLanes);
+ const auto shifted = detail::SlideUp(v, v, kLanes);
// Match x86 semantics by zeroing lower lanes in 128-bit blocks
constexpr size_t kLanesPerBlock = detail::LanesPerBlock(di);
const auto idx_mod = detail::And(detail::Iota0(di), kLanesPerBlock - 1);
@@ -1363,7 +1335,7 @@ template <size_t kLanes, class V>
HWY_API V ShiftRightLanes(const V v) {
using D = DFromV<V>;
const RebindToSigned<D> di;
- const auto shifted = detail::SlideDown(v, kLanes);
+ const auto shifted = detail::SlideDown(v, v, kLanes);
// Match x86 semantics by zeroing upper lanes in 128-bit blocks
constexpr size_t kLanesPerBlock = detail::LanesPerBlock(di);
const auto idx_mod = detail::And(detail::Iota0(di), kLanesPerBlock - 1);
@@ -1405,7 +1377,7 @@ HWY_API V ConcatUpperLower(const V hi, c
template <class V>
HWY_API V ConcatLowerLower(const V hi, const V lo) {
// Move lower half into upper
- const auto hi_up = detail::SlideUp(hi, Lanes(DFromV<V>()) / 2);
+ const auto hi_up = detail::SlideUp(hi, hi, Lanes(DFromV<V>()) / 2);
return ConcatUpperLower(hi_up, lo);
}
@@ -1414,7 +1386,7 @@ HWY_API V ConcatLowerLower(const V hi, c
template <class V>
HWY_API V ConcatUpperUpper(const V hi, const V lo) {
// Move upper half into lower
- const auto lo_down = detail::SlideDown(lo, Lanes(DFromV<V>()) / 2);
+ const auto lo_down = detail::SlideDown(lo, lo, Lanes(DFromV<V>()) / 2);
return ConcatUpperLower(hi, lo_down);
}
@@ -1423,8 +1395,8 @@ HWY_API V ConcatUpperUpper(const V hi, c
template <class V>
HWY_API V ConcatLowerUpper(const V hi, const V lo) {
// Move half of both inputs to the other half
- const auto hi_up = detail::SlideUp(hi, Lanes(DFromV<V>()) / 2);
- const auto lo_down = detail::SlideDown(lo, Lanes(DFromV<V>()) / 2);
+ const auto hi_up = detail::SlideUp(hi, hi, Lanes(DFromV<V>()) / 2);
+ const auto lo_down = detail::SlideDown(lo, lo, Lanes(DFromV<V>()) / 2);
return ConcatUpperLower(hi_up, lo_down);
}
@@ -1491,61 +1463,55 @@ HWY_API V Combine(const V a, const V b)
// ================================================== REDUCE
// vector = f(vector, zero_m1)
-#define HWY_RVV_REDUCE(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
- HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
- NAME(HWY_RVV_V(BASE, SEW, LMUL) v, HWY_RVV_V(BASE, SEW, 1) v0) { \
- vsetvlmax_e##SEW##m##LMUL(); \
- return Set(HWY_RVV_D(CHAR, SEW, LMUL)(), \
- GetLane(v##OP##_vs_##CHAR##SEW##m##LMUL##_##CHAR##SEW##m1( \
- v0, v, v0))); \
+#define HWY_RVV_REDUCE(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
+ HWY_API HWY_RVV_V(BASE, SEW, LMUL) \
+ NAME(HWY_RVV_V(BASE, SEW, LMUL) v, HWY_RVV_V(BASE, SEW, m1) v0) { \
+ vsetvlmax_e##SEW##LMUL(); \
+ return Set( \
+ HWY_RVV_D(CHAR, SEW, LMUL)(), \
+ GetLane(v##OP##_vs_##CHAR##SEW##LMUL##_##CHAR##SEW##m1(v0, v, v0))); \
}
// ------------------------------ SumOfLanes
namespace detail {
-
HWY_RVV_FOREACH_UI(HWY_RVV_REDUCE, RedSum, redsum)
HWY_RVV_FOREACH_F(HWY_RVV_REDUCE, RedSum, fredsum)
-
} // namespace detail
template <class V>
HWY_API V SumOfLanes(const V v) {
using T = TFromV<V>;
- const auto v0 = Zero(Simd<T, HWY_LANES(T)>()); // always m1
+ const auto v0 = Zero(Full<T>()); // always m1
return detail::RedSum(v, v0);
}
// ------------------------------ MinOfLanes
namespace detail {
-
HWY_RVV_FOREACH_U(HWY_RVV_REDUCE, RedMin, redminu)
HWY_RVV_FOREACH_I(HWY_RVV_REDUCE, RedMin, redmin)
HWY_RVV_FOREACH_F(HWY_RVV_REDUCE, RedMin, fredmin)
-
} // namespace detail
template <class V>
HWY_API V MinOfLanes(const V v) {
using T = TFromV<V>;
- const Simd<T, HWY_LANES(T)> d1; // always m1
+ const Full<T> d1; // always m1
const auto neutral = Set(d1, HighestValue<T>());
return detail::RedMin(v, neutral);
}
// ------------------------------ MaxOfLanes
namespace detail {
-
HWY_RVV_FOREACH_U(HWY_RVV_REDUCE, RedMax, redmaxu)
HWY_RVV_FOREACH_I(HWY_RVV_REDUCE, RedMax, redmax)
HWY_RVV_FOREACH_F(HWY_RVV_REDUCE, RedMax, fredmax)
-
} // namespace detail
template <class V>
HWY_API V MaxOfLanes(const V v) {
using T = TFromV<V>;
- const Simd<T, HWY_LANES(T)> d1; // always m1
+ const Full<T> d1; // always m1
const auto neutral = Set(d1, LowestValue<T>());
return detail::RedMax(v, neutral);
}
@@ -1570,7 +1536,7 @@ HWY_API VFromD<D> LoadDup128(D d, const
#define HWY_RVV_STORE_MASK_BITS(MLEN, NAME, OP) \
HWY_API size_t StoreMaskBits(HWY_RVV_M(MLEN) m, uint8_t* p) { \
/* LMUL=1 is always enough */ \
- Simd<uint8_t, HWY_LANES(uint8_t)> d8; \
+ Full<uint8_t> d8; \
const size_t num_bytes = (Lanes(d8) + MLEN - 1) / MLEN; \
/* TODO(janwas): how to convert vbool* to vuint?*/ \
/*Store(m, d8, p);*/ \
@@ -1581,6 +1547,22 @@ HWY_API VFromD<D> LoadDup128(D d, const
HWY_RVV_FOREACH_B(HWY_RVV_STORE_MASK_BITS, _, _)
#undef HWY_RVV_STORE_MASK_BITS
+// ------------------------------ FirstN (Iota0, Lt, RebindMask, SlideUp)
+
+// Disallow for 8-bit because Iota is likely to overflow.
+template <class D, HWY_IF_NOT_LANE_SIZE_D(D, 1)>
+HWY_API MFromD<D> FirstN(const D d, const size_t n) {
+ const RebindToSigned<D> di;
+ return RebindMask(d, Lt(BitCast(di, detail::Iota0(d)), Set(di, n)));
+}
+
+template <class D, HWY_IF_LANE_SIZE_D(D, 1)>
+HWY_API MFromD<D> FirstN(const D d, const size_t n) {
+ const auto zero = Zero(d);
+ const auto one = Set(d, 1);
+ return Eq(detail::SlideUp(one, zero, n), one);
+}
+
// ------------------------------ Neg
template <class V, HWY_IF_SIGNED_V(V)>
@@ -1589,9 +1571,9 @@ HWY_API V Neg(const V v) {
}
// vector = f(vector), but argument is repeated
-#define HWY_RVV_RETV_ARGV2(BASE, CHAR, SEW, LMUL, MLEN, NAME, OP) \
+#define HWY_RVV_RETV_ARGV2(BASE, CHAR, SEW, LMUL, SHIFT, MLEN, NAME, OP) \
HWY_API HWY_RVV_V(BASE, SEW, LMUL) NAME(HWY_RVV_V(BASE, SEW, LMUL) v) { \
- return v##OP##_vv_##CHAR##SEW##m##LMUL(v, v); \
+ return v##OP##_vv_##CHAR##SEW##LMUL(v, v); \
}
HWY_RVV_FOREACH_F(HWY_RVV_RETV_ARGV2, Neg, fsgnjn)
@@ -1628,7 +1610,6 @@ template <class V>
HWY_API auto UseInt(const V v) -> decltype(MaskFromVec(v)) {
return Lt(Abs(v), Set(DFromV<V>(), MantissaEnd<TFromV<V>>()));
}
-
} // namespace detail
template <class V>
@@ -1699,10 +1680,8 @@ HWY_API VFromD<D> Iota(const D d, TFromD
// Using vwmul does not work for m8, so use mulh instead. Highway only provides
// MulHigh for 16-bit, so use a private wrapper.
namespace detail {
-
HWY_RVV_FOREACH_U32(HWY_RVV_RETV_ARGVV, MulHigh, mulhu)
HWY_RVV_FOREACH_I32(HWY_RVV_RETV_ARGVV, MulHigh, mulh)
-
} // namespace detail
template <class V>
@@ -1712,7 +1691,7 @@ HWY_API VFromD<RepartitionToWide<DFromV<
const auto lo = Mul(a, b);
const auto hi = detail::MulHigh(a, b);
const RepartitionToWide<DFromV<V>> dw;
- return BitCast(dw, OddEven(detail::SlideUp(hi, 1), lo));
+ return BitCast(dw, OddEven(detail::SlideUp(hi, hi, 1), lo));
}
// ================================================== END MACROS
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/ops/x86_128-inl.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/ops/x86_128-inl.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/ops/x86_128-inl.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/ops/x86_128-inl.h 2021-07-26 17:19:52.153729522 -0400
@@ -154,27 +154,28 @@ HWY_API Vec128<double, N> Zero(Simd<doub
// Returns a vector/part with all lanes set to "t".
template <size_t N, HWY_IF_LE128(uint8_t, N)>
HWY_API Vec128<uint8_t, N> Set(Simd<uint8_t, N> /* tag */, const uint8_t t) {
- return Vec128<uint8_t, N>{_mm_set1_epi8(t)};
+ return Vec128<uint8_t, N>{_mm_set1_epi8(static_cast<char>(t))}; // NOLINT
}
template <size_t N, HWY_IF_LE128(uint16_t, N)>
HWY_API Vec128<uint16_t, N> Set(Simd<uint16_t, N> /* tag */, const uint16_t t) {
- return Vec128<uint16_t, N>{_mm_set1_epi16(t)};
+ return Vec128<uint16_t, N>{_mm_set1_epi16(static_cast<short>(t))}; // NOLINT
}
template <size_t N, HWY_IF_LE128(uint32_t, N)>
HWY_API Vec128<uint32_t, N> Set(Simd<uint32_t, N> /* tag */, const uint32_t t) {
- return Vec128<uint32_t, N>{_mm_set1_epi32(t)};
+ return Vec128<uint32_t, N>{_mm_set1_epi32(static_cast<int>(t))};
}
template <size_t N, HWY_IF_LE128(uint64_t, N)>
HWY_API Vec128<uint64_t, N> Set(Simd<uint64_t, N> /* tag */, const uint64_t t) {
- return Vec128<uint64_t, N>{_mm_set1_epi64x(t)};
+ return Vec128<uint64_t, N>{
+ _mm_set1_epi64x(static_cast<long long>(t))}; // NOLINT
}
template <size_t N, HWY_IF_LE128(int8_t, N)>
HWY_API Vec128<int8_t, N> Set(Simd<int8_t, N> /* tag */, const int8_t t) {
- return Vec128<int8_t, N>{_mm_set1_epi8(t)};
+ return Vec128<int8_t, N>{_mm_set1_epi8(static_cast<char>(t))}; // NOLINT
}
template <size_t N, HWY_IF_LE128(int16_t, N)>
HWY_API Vec128<int16_t, N> Set(Simd<int16_t, N> /* tag */, const int16_t t) {
- return Vec128<int16_t, N>{_mm_set1_epi16(t)};
+ return Vec128<int16_t, N>{_mm_set1_epi16(static_cast<short>(t))}; // NOLINT
}
template <size_t N, HWY_IF_LE128(int32_t, N)>
HWY_API Vec128<int32_t, N> Set(Simd<int32_t, N> /* tag */, const int32_t t) {
@@ -182,7 +183,8 @@ HWY_API Vec128<int32_t, N> Set(Simd<int3
}
template <size_t N, HWY_IF_LE128(int64_t, N)>
HWY_API Vec128<int64_t, N> Set(Simd<int64_t, N> /* tag */, const int64_t t) {
- return Vec128<int64_t, N>{_mm_set1_epi64x(t)};
+ return Vec128<int64_t, N>{
+ _mm_set1_epi64x(static_cast<long long>(t))}; // NOLINT
}
template <size_t N, HWY_IF_LE128(float, N)>
HWY_API Vec128<float, N> Set(Simd<float, N> /* tag */, const float t) {
@@ -684,6 +686,14 @@ HWY_API Mask128<double, N> operator>=(co
return Mask128<double, N>{_mm_cmpge_pd(a.raw, b.raw)};
}
+// ------------------------------ FirstN (Iota, Lt)
+
+template <typename T, size_t N, HWY_IF_LE128(T, N)>
+HWY_API Mask128<T, N> FirstN(const Simd<T, N> d, size_t num) {
+ const RebindToSigned<decltype(d)> di; // Signed comparisons are cheaper.
+ return RebindMask(d, Iota(di, 0) < Set(di, static_cast<MakeSigned<T>>(num)));
+}
+
// ================================================== ARITHMETIC
// ------------------------------ Addition
@@ -895,7 +905,7 @@ template <size_t N>
HWY_API Vec128<int32_t, N> Abs(const Vec128<int32_t, N> v) {
return Vec128<int32_t, N>{_mm_abs_epi32(v.raw)};
}
-
+// i64 is implemented after BroadcastSignBit.
template <size_t N>
HWY_API Vec128<float, N> Abs(const Vec128<float, N> v) {
const Vec128<int32_t, N> mask{_mm_set1_epi32(0x7FFFFFFF)};
@@ -1067,15 +1077,24 @@ HWY_API Vec128<int64_t, N> BroadcastSign
return VecFromMask(v < Zero(Simd<int64_t, N>()));
#else
// Efficient Gt() requires SSE4.2 but we only have SSE4.1. BLENDVPD requires
- // two constants and domain crossing. 32-bit compare only requires Zero()
- // plus a shuffle to replicate the upper 32 bits.
+ // two constants and domain crossing. 32-bit shift avoids generating a zero.
const Simd<int32_t, N * 2> d32;
- const auto sign = BitCast(d32, v) < Zero(d32);
+ const auto sign = ShiftRight<31>(BitCast(d32, v));
return Vec128<int64_t, N>{
_mm_shuffle_epi32(sign.raw, _MM_SHUFFLE(3, 3, 1, 1))};
#endif
}
+template <size_t N>
+HWY_API Vec128<int64_t, N> Abs(const Vec128<int64_t, N> v) {
+#if HWY_TARGET == HWY_AVX3
+ return Vec128<int64_t, N>{_mm_abs_epi64(v.raw)};
+#else
+ const auto zero = Zero(Simd<int64_t,N>());
+ return IfThenElse(MaskFromVec(BroadcastSignBit(v)), zero - v, v);
+#endif
+}
+
template <int kBits, size_t N>
HWY_API Vec128<int64_t, N> ShiftRight(const Vec128<int64_t, N> v) {
#if HWY_TARGET == HWY_AVX3
@@ -1787,6 +1806,10 @@ HWY_API void Stream(const Vec128<double,
// ------------------------------ Scatter
+// Work around warnings in the intrinsic definitions (passing -1 as a mask).
+HWY_DIAGNOSTICS(push)
+HWY_DIAGNOSTICS_OFF(disable : 4245 4365, ignored "-Wsign-conversion")
+
// Unfortunately the GCC/Clang intrinsics do not accept int64_t*.
using GatherIndex64 = long long int; // NOLINT(google-runtime-int)
static_assert(sizeof(GatherIndex64) == 8, "Must be 64-bit type");
@@ -2048,6 +2071,8 @@ HWY_API Vec128<double, N> GatherIndex(Si
#endif // HWY_TARGET != HWY_SSE4
+HWY_DIAGNOSTICS(pop)
+
// ================================================== SWIZZLE
// ------------------------------ Extract half
@@ -2075,10 +2100,10 @@ HWY_INLINE Vec128<double, 1> UpperHalf(V
// ------------------------------ Shift vector by constant #bytes
// 0x01..0F, kBytes = 1 => 0x02..0F00
-template <int kBytes, typename T>
-HWY_API Vec128<T> ShiftLeftBytes(const Vec128<T> v) {
+template <int kBytes, typename T, size_t N>
+HWY_API Vec128<T, N> ShiftLeftBytes(const Vec128<T, N> v) {
static_assert(0 <= kBytes && kBytes <= 16, "Invalid kBytes");
- return Vec128<T>{_mm_slli_si128(v.raw, kBytes)};
+ return Vec128<T, N>{_mm_slli_si128(v.raw, kBytes)};
}
template <int kLanes, typename T, size_t N>
@@ -2089,10 +2114,10 @@ HWY_API Vec128<T, N> ShiftLeftLanes(cons
}
// 0x01..0F, kBytes = 1 => 0x0001..0E
-template <int kBytes, typename T>
-HWY_API Vec128<T> ShiftRightBytes(const Vec128<T> v) {
+template <int kBytes, typename T, size_t N>
+HWY_API Vec128<T, N> ShiftRightBytes(const Vec128<T, N> v) {
static_assert(0 <= kBytes && kBytes <= 16, "Invalid kBytes");
- return Vec128<T>{_mm_srli_si128(v.raw, kBytes)};
+ return Vec128<T, N>{_mm_srli_si128(v.raw, kBytes)};
}
template <int kLanes, typename T, size_t N>
@@ -2257,44 +2282,47 @@ HWY_API Vec128<float> Shuffle0123(const
// ------------------------------ TableLookupLanes
// Returned by SetTableIndices for use by TableLookupLanes.
-template <typename T>
+template <typename T, size_t N>
struct Indices128 {
__m128i raw;
};
-template <typename T>
-HWY_API Indices128<T> SetTableIndices(Full128<T>, const int32_t* idx) {
+template <typename T, size_t N, HWY_IF_LE128(T, N)>
+HWY_API Indices128<T, N> SetTableIndices(Simd<T, N> d, const int32_t* idx) {
#if !defined(NDEBUG) || defined(ADDRESS_SANITIZER)
- const size_t N = 16 / sizeof(T);
for (size_t i = 0; i < N; ++i) {
HWY_DASSERT(0 <= idx[i] && idx[i] < static_cast<int32_t>(N));
}
#endif
- const Full128<uint8_t> d8;
- alignas(16) uint8_t control[16];
- for (size_t idx_byte = 0; idx_byte < 16; ++idx_byte) {
- const size_t idx_lane = idx_byte / sizeof(T);
- const size_t mod = idx_byte % sizeof(T);
- control[idx_byte] = static_cast<uint8_t>(idx[idx_lane] * sizeof(T) + mod);
+ const Repartition<uint8_t, decltype(d)> d8;
+ alignas(16) uint8_t control[16] = {0};
+ for (size_t idx_lane = 0; idx_lane < N; ++idx_lane) {
+ for (size_t idx_byte = 0; idx_byte < sizeof(T); ++idx_byte) {
+ control[idx_lane * sizeof(T) + idx_byte] =
+ static_cast<uint8_t>(idx[idx_lane] * sizeof(T) + idx_byte);
+ }
}
- return Indices128<T>{Load(d8, control).raw};
+ return Indices128<T, N>{Load(d8, control).raw};
}
-HWY_API Vec128<uint32_t> TableLookupLanes(const Vec128<uint32_t> v,
- const Indices128<uint32_t> idx) {
- return TableLookupBytes(v, Vec128<uint32_t>{idx.raw});
+template <size_t N>
+HWY_API Vec128<uint32_t, N> TableLookupLanes(
+ const Vec128<uint32_t, N> v, const Indices128<uint32_t, N> idx) {
+ return TableLookupBytes(v, Vec128<uint32_t, N>{idx.raw});
}
-HWY_API Vec128<int32_t> TableLookupLanes(const Vec128<int32_t> v,
- const Indices128<int32_t> idx) {
- return TableLookupBytes(v, Vec128<int32_t>{idx.raw});
+template <size_t N>
+HWY_API Vec128<int32_t, N> TableLookupLanes(const Vec128<int32_t, N> v,
+ const Indices128<int32_t, N> idx) {
+ return TableLookupBytes(v, Vec128<int32_t, N>{idx.raw});
}
-HWY_API Vec128<float> TableLookupLanes(const Vec128<float> v,
- const Indices128<float> idx) {
- const Full128<int32_t> di;
- const Full128<float> df;
+template <size_t N>
+HWY_API Vec128<float, N> TableLookupLanes(const Vec128<float, N> v,
+ const Indices128<float, N> idx) {
+ const Simd<int32_t, N> di;
+ const Simd<float, N> df;
return BitCast(df,
- TableLookupBytes(BitCast(di, v), Vec128<int32_t>{idx.raw}));
+ TableLookupBytes(BitCast(di, v), Vec128<int32_t, N>{idx.raw}));
}
// ------------------------------ Interleave lanes
@@ -2502,47 +2530,47 @@ HWY_INLINE Vec128<double> ConcatUpperLow
namespace detail {
-template <typename T>
-HWY_API Vec128<T> OddEven(hwy::SizeTag<1> /* tag */, const Vec128<T> a,
- const Vec128<T> b) {
- const Full128<T> d;
- const Full128<uint8_t> d8;
+template <typename T, size_t N>
+HWY_API Vec128<T, N> OddEven(hwy::SizeTag<1> /* tag */, const Vec128<T, N> a,
+ const Vec128<T, N> b) {
+ const Simd<T, N> d;
+ const Repartition<uint8_t, decltype(d)> d8;
alignas(16) constexpr uint8_t mask[16] = {0xFF, 0, 0xFF, 0, 0xFF, 0, 0xFF, 0,
0xFF, 0, 0xFF, 0, 0xFF, 0, 0xFF, 0};
return IfThenElse(MaskFromVec(BitCast(d, Load(d8, mask))), b, a);
}
-template <typename T>
-HWY_API Vec128<T> OddEven(hwy::SizeTag<2> /* tag */, const Vec128<T> a,
- const Vec128<T> b) {
- return Vec128<T>{_mm_blend_epi16(a.raw, b.raw, 0x55)};
+template <typename T, size_t N>
+HWY_API Vec128<T, N> OddEven(hwy::SizeTag<2> /* tag */, const Vec128<T, N> a,
+ const Vec128<T, N> b) {
+ return Vec128<T, N>{_mm_blend_epi16(a.raw, b.raw, 0x55)};
}
-template <typename T>
-HWY_API Vec128<T> OddEven(hwy::SizeTag<4> /* tag */, const Vec128<T> a,
- const Vec128<T> b) {
- return Vec128<T>{_mm_blend_epi16(a.raw, b.raw, 0x33)};
+template <typename T, size_t N>
+HWY_API Vec128<T, N> OddEven(hwy::SizeTag<4> /* tag */, const Vec128<T, N> a,
+ const Vec128<T, N> b) {
+ return Vec128<T, N>{_mm_blend_epi16(a.raw, b.raw, 0x33)};
}
-template <typename T>
-HWY_API Vec128<T> OddEven(hwy::SizeTag<8> /* tag */, const Vec128<T> a,
- const Vec128<T> b) {
- return Vec128<T>{_mm_blend_epi16(a.raw, b.raw, 0x0F)};
+template <typename T, size_t N>
+HWY_API Vec128<T, N> OddEven(hwy::SizeTag<8> /* tag */, const Vec128<T, N> a,
+ const Vec128<T, N> b) {
+ return Vec128<T, N>{_mm_blend_epi16(a.raw, b.raw, 0x0F)};
}
} // namespace detail
-template <typename T>
-HWY_API Vec128<T> OddEven(const Vec128<T> a, const Vec128<T> b) {
+template <typename T, size_t N>
+HWY_API Vec128<T, N> OddEven(const Vec128<T, N> a, const Vec128<T, N> b) {
return detail::OddEven(hwy::SizeTag<sizeof(T)>(), a, b);
}
-template <>
-HWY_INLINE Vec128<float> OddEven<float>(const Vec128<float> a,
- const Vec128<float> b) {
- return Vec128<float>{_mm_blend_ps(a.raw, b.raw, 5)};
+template <size_t N>
+HWY_INLINE Vec128<float, N> OddEven(const Vec128<float, N> a,
+ const Vec128<float, N> b) {
+ return Vec128<float, N>{_mm_blend_ps(a.raw, b.raw, 5)};
}
-template <>
-HWY_INLINE Vec128<double> OddEven<double>(const Vec128<double> a,
- const Vec128<double> b) {
- return Vec128<double>{_mm_blend_pd(a.raw, b.raw, 1)};
+template <size_t N>
+HWY_INLINE Vec128<double, N> OddEven(const Vec128<double, N> a,
+ const Vec128<double, N> b) {
+ return Vec128<double, N>{_mm_blend_pd(a.raw, b.raw, 1)};
}
// ------------------------------ Shl (ZipLower, Mul)
@@ -2980,7 +3008,7 @@ HWY_API Vec128<uint8_t, N> U8FromU32(con
return LowerHalf(LowerHalf(BitCast(d8, quad)));
}
-// ------------------------------ Convert integer <=> floating point
+// ------------------------------ Integer <=> fp (ShiftRight, OddEven)
template <size_t N>
HWY_API Vec128<float, N> ConvertTo(Simd<float, N> /* tag */,
@@ -2995,13 +3023,20 @@ HWY_API Vec128<double, N> ConvertTo(Simd
(void)dd;
return Vec128<double, N>{_mm_cvtepi64_pd(v.raw)};
#else
- alignas(16) int64_t lanes_i[2];
- Store(v, Simd<int64_t, N>(), lanes_i);
- alignas(16) double lanes_d[2];
- for (size_t i = 0; i < N; ++i) {
- lanes_d[i] = static_cast<double>(lanes_i[i]);
- }
- return Load(dd, lanes_d);
+ // Based on wim's approach (https://stackoverflow.com/questions/41144668/)
+ const Repartition<uint32_t, decltype(dd)> d32;
+ const Repartition<uint64_t, decltype(dd)> d64;
+
+ // Toggle MSB of lower 32-bits and insert exponent for 2^84 + 2^63
+ const auto k84_63 = Set(d64, 0x4530000080000000ULL);
+ const auto v_upper = BitCast(dd, ShiftRight<32>(BitCast(d64, v)) ^ k84_63);
+
+ // Exponent is 2^52, lower 32 bits from v (=> 32-bit OddEven)
+ const auto k52 = Set(d32, 0x43300000);
+ const auto v_lower = BitCast(dd, OddEven(k52, BitCast(d32, v)));
+
+ const auto k84_63_52 = BitCast(dd, Set(d64, 0x4530000080100000ULL));
+ return (v_upper - k84_63_52) + v_lower; // order matters!
#endif
}
@@ -3572,55 +3607,87 @@ HWY_API void StoreInterleaved4(const Vec
namespace detail {
-// For u32/i32/f32.
-template <typename T, size_t N>
-HWY_API Vec128<T, N> SumOfLanes(hwy::SizeTag<4> /* tag */,
- const Vec128<T, N> v3210) {
+// N=1 for any T: no-op
+template <typename T>
+HWY_API Vec128<T, 1> SumOfLanes(hwy::SizeTag<sizeof(T)> /* tag */,
+ const Vec128<T, 1> v) {
+ return v;
+}
+template <typename T>
+HWY_API Vec128<T, 1> MinOfLanes(hwy::SizeTag<sizeof(T)> /* tag */,
+ const Vec128<T, 1> v) {
+ return v;
+}
+template <typename T>
+HWY_API Vec128<T, 1> MaxOfLanes(hwy::SizeTag<sizeof(T)> /* tag */,
+ const Vec128<T, 1> v) {
+ return v;
+}
+
+// u32/i32/f32:
+
+// N=2
+template <typename T>
+HWY_API Vec128<T, 2> SumOfLanes(hwy::SizeTag<4> /* tag */,
+ const Vec128<T, 2> v10) {
+ return v10 + Vec128<T, 2>{Shuffle2301(Vec128<T>{v10.raw}).raw};
+}
+template <typename T>
+HWY_API Vec128<T, 2> MinOfLanes(hwy::SizeTag<4> /* tag */,
+ const Vec128<T, 2> v10) {
+ return Min(v10, Vec128<T, 2>{Shuffle2301(Vec128<T>{v10.raw}).raw});
+}
+template <typename T>
+HWY_API Vec128<T, 2> MaxOfLanes(hwy::SizeTag<4> /* tag */,
+ const Vec128<T, 2> v10) {
+ return Max(v10, Vec128<T, 2>{Shuffle2301(Vec128<T>{v10.raw}).raw});
+}
+
+// N=4 (full)
+template <typename T>
+HWY_API Vec128<T> SumOfLanes(hwy::SizeTag<4> /* tag */, const Vec128<T> v3210) {
const Vec128<T> v1032 = Shuffle1032(v3210);
const Vec128<T> v31_20_31_20 = v3210 + v1032;
const Vec128<T> v20_31_20_31 = Shuffle0321(v31_20_31_20);
return v20_31_20_31 + v31_20_31_20;
}
-template <typename T, size_t N>
-HWY_API Vec128<T, N> MinOfLanes(hwy::SizeTag<4> /* tag */,
- const Vec128<T, N> v3210) {
+template <typename T>
+HWY_API Vec128<T> MinOfLanes(hwy::SizeTag<4> /* tag */, const Vec128<T> v3210) {
const Vec128<T> v1032 = Shuffle1032(v3210);
const Vec128<T> v31_20_31_20 = Min(v3210, v1032);
const Vec128<T> v20_31_20_31 = Shuffle0321(v31_20_31_20);
return Min(v20_31_20_31, v31_20_31_20);
}
-template <typename T, size_t N>
-HWY_API Vec128<T, N> MaxOfLanes(hwy::SizeTag<4> /* tag */,
- const Vec128<T, N> v3210) {
+template <typename T>
+HWY_API Vec128<T> MaxOfLanes(hwy::SizeTag<4> /* tag */, const Vec128<T> v3210) {
const Vec128<T> v1032 = Shuffle1032(v3210);
const Vec128<T> v31_20_31_20 = Max(v3210, v1032);
const Vec128<T> v20_31_20_31 = Shuffle0321(v31_20_31_20);
return Max(v20_31_20_31, v31_20_31_20);
}
-// For u64/i64/f64.
-template <typename T, size_t N>
-HWY_API Vec128<T, N> SumOfLanes(hwy::SizeTag<8> /* tag */,
- const Vec128<T, N> v10) {
+// u64/i64/f64:
+
+// N=2 (full)
+template <typename T>
+HWY_API Vec128<T> SumOfLanes(hwy::SizeTag<8> /* tag */, const Vec128<T> v10) {
const Vec128<T> v01 = Shuffle01(v10);
return v10 + v01;
}
-template <typename T, size_t N>
-HWY_API Vec128<T, N> MinOfLanes(hwy::SizeTag<8> /* tag */,
- const Vec128<T, N> v10) {
+template <typename T>
+HWY_API Vec128<T> MinOfLanes(hwy::SizeTag<8> /* tag */, const Vec128<T> v10) {
const Vec128<T> v01 = Shuffle01(v10);
return Min(v10, v01);
}
-template <typename T, size_t N>
-HWY_API Vec128<T, N> MaxOfLanes(hwy::SizeTag<8> /* tag */,
- const Vec128<T, N> v10) {
+template <typename T>
+HWY_API Vec128<T> MaxOfLanes(hwy::SizeTag<8> /* tag */, const Vec128<T> v10) {
const Vec128<T> v01 = Shuffle01(v10);
return Max(v10, v01);
}
} // namespace detail
-// Supported for u/i/f 32/64. Returns the sum in each lane.
+// Supported for u/i/f 32/64. Returns the same value in each lane.
template <typename T, size_t N>
HWY_API Vec128<T, N> SumOfLanes(const Vec128<T, N> v) {
return detail::SumOfLanes(hwy::SizeTag<sizeof(T)>(), v);
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/ops/x86_256-inl.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/ops/x86_256-inl.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/ops/x86_256-inl.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/ops/x86_256-inl.h 2021-07-26 17:19:30.740403369 -0400
@@ -20,15 +20,18 @@
// particular, "Broadcast", pack and zip behavior may be surprising.
#include <immintrin.h> // AVX2+
+
#if defined(_MSC_VER) && defined(__clang__)
// Including <immintrin.h> should be enough, but Clang's headers helpfully skip
// including these headers when _MSC_VER is defined, like when using clang-cl.
// Include these directly here.
-#include <smmintrin.h>
#include <avxintrin.h>
+// avxintrin defines __m256i and must come before avx2intrin.
#include <avx2intrin.h>
+#include <bmi2intrin.h> // _pext_u64
#include <f16cintrin.h>
#include <fmaintrin.h>
+#include <smmintrin.h>
#endif
#include <stddef.h>
@@ -159,23 +162,24 @@ HWY_API Vec256<uint16_t> Set(Full256<uin
return Vec256<uint16_t>{_mm256_set1_epi16(static_cast<short>(t))}; // NOLINT
}
HWY_API Vec256<uint32_t> Set(Full256<uint32_t> /* tag */, const uint32_t t) {
- return Vec256<uint32_t>{_mm256_set1_epi32(static_cast<int>(t))}; // NOLINT
+ return Vec256<uint32_t>{_mm256_set1_epi32(static_cast<int>(t))};
}
HWY_API Vec256<uint64_t> Set(Full256<uint64_t> /* tag */, const uint64_t t) {
return Vec256<uint64_t>{
_mm256_set1_epi64x(static_cast<long long>(t))}; // NOLINT
}
HWY_API Vec256<int8_t> Set(Full256<int8_t> /* tag */, const int8_t t) {
- return Vec256<int8_t>{_mm256_set1_epi8(t)};
+ return Vec256<int8_t>{_mm256_set1_epi8(static_cast<char>(t))}; // NOLINT
}
HWY_API Vec256<int16_t> Set(Full256<int16_t> /* tag */, const int16_t t) {
- return Vec256<int16_t>{_mm256_set1_epi16(t)};
+ return Vec256<int16_t>{_mm256_set1_epi16(static_cast<short>(t))}; // NOLINT
}
HWY_API Vec256<int32_t> Set(Full256<int32_t> /* tag */, const int32_t t) {
return Vec256<int32_t>{_mm256_set1_epi32(t)};
}
HWY_API Vec256<int64_t> Set(Full256<int64_t> /* tag */, const int64_t t) {
- return Vec256<int64_t>{_mm256_set1_epi64x(t)};
+ return Vec256<int64_t>{
+ _mm256_set1_epi64x(static_cast<long long>(t))}; // NOLINT
}
HWY_API Vec256<float> Set(Full256<float> /* tag */, const float t) {
return Vec256<float>{_mm256_set1_ps(t)};
@@ -351,6 +355,8 @@ HWY_API Vec256<T> VecFromMask(Full256<T>
return Vec256<T>{v.raw};
}
+// ------------------------------ IfThenElse
+
// mask ? yes : no
template <typename T>
HWY_API Vec256<T> IfThenElse(const Mask256<T> mask, const Vec256<T> yes,
@@ -681,6 +687,14 @@ HWY_API Vec256<double> Max(const Vec256<
return Vec256<double>{_mm256_max_pd(a.raw, b.raw)};
}
+// ------------------------------ FirstN (Iota, Lt)
+
+template <typename T>
+HWY_API Mask256<T> FirstN(const Full256<T> d, size_t n) {
+ const RebindToSigned<decltype(d)> di; // Signed comparisons are cheaper.
+ return RebindMask(d, Iota(di, 0) < Set(di, static_cast<MakeSigned<T>>(n)));
+}
+
// ================================================== ARITHMETIC
// ------------------------------ Addition
@@ -843,7 +857,13 @@ HWY_API Vec256<uint16_t> AverageRound(co
// Returns absolute value, except that LimitsMin() maps to LimitsMax() + 1.
HWY_API Vec256<int8_t> Abs(const Vec256<int8_t> v) {
+#if HWY_COMPILER_MSVC
+ // Workaround for incorrect codegen? (wrong result)
+ const auto zero = Zero(Full256<int8_t>());
+ return Vec256<int8_t>{_mm256_max_epi8(v.raw, (zero - v).raw)};
+#else
return Vec256<int8_t>{_mm256_abs_epi8(v.raw)};
+#endif
}
HWY_API Vec256<int16_t> Abs(const Vec256<int16_t> v) {
return Vec256<int16_t>{_mm256_abs_epi16(v.raw)};
@@ -851,6 +871,7 @@ HWY_API Vec256<int16_t> Abs(const Vec256
HWY_API Vec256<int32_t> Abs(const Vec256<int32_t> v) {
return Vec256<int32_t>{_mm256_abs_epi32(v.raw)};
}
+// i64 is implemented after BroadcastSignBit.
HWY_API Vec256<float> Abs(const Vec256<float> v) {
const Vec256<int32_t> mask{_mm256_set1_epi32(0x7FFFFFFF)};
@@ -1027,6 +1048,15 @@ HWY_API Vec256<int64_t> ShiftRight(const
#endif
}
+HWY_API Vec256<int64_t> Abs(const Vec256<int64_t> v) {
+#if HWY_TARGET == HWY_AVX3
+ return Vec256<int64_t>{_mm256_abs_epi64(v.raw)};
+#else
+ const auto zero = Zero(Full256<int64_t>());
+ return IfThenElse(MaskFromVec(BroadcastSignBit(v)), zero - v, v);
+#endif
+}
+
// ------------------------------ ShiftLeftSame
HWY_API Vec256<uint16_t> ShiftLeftSame(const Vec256<uint16_t> v,
@@ -1398,6 +1428,10 @@ HWY_API void Stream(const Vec256<double>
// ------------------------------ Scatter
+// Work around warnings in the intrinsic definitions (passing -1 as a mask).
+HWY_DIAGNOSTICS(push)
+HWY_DIAGNOSTICS_OFF(disable : 4245 4365, ignored "-Wsign-conversion")
+
#if HWY_TARGET == HWY_AVX3
namespace detail {
@@ -1584,6 +1618,8 @@ HWY_INLINE Vec256<double> GatherIndex<do
return Vec256<double>{_mm256_i64gather_pd(base, index.raw, 8)};
}
+HWY_DIAGNOSTICS(pop)
+
// ================================================== SWIZZLE
template <typename T>
@@ -2379,11 +2415,18 @@ HWY_API Vec128<int8_t> DemoteTo(Full128<
_mm256_castsi256_si128(_mm256_permute4x64_epi64(i8, 0x88))};
}
+ // Avoid "value of intrinsic immediate argument '8' is out of range '0 - 7'".
+ // 8 is the correct value of _MM_FROUND_NO_EXC, which is allowed here.
+HWY_DIAGNOSTICS(push)
+HWY_DIAGNOSTICS_OFF(disable : 4556, ignored "-Wsign-conversion")
+
HWY_API Vec128<float16_t> DemoteTo(Full128<float16_t> /* tag */,
const Vec256<float> v) {
return Vec128<float16_t>{_mm256_cvtps_ph(v.raw, _MM_FROUND_NO_EXC)};
}
+HWY_DIAGNOSTICS(pop)
+
HWY_API Vec128<float> DemoteTo(Full128<float> /* tag */,
const Vec256<double> v) {
return Vec128<float>{_mm256_cvtpd_ps(v.raw)};
@@ -2409,7 +2452,7 @@ HWY_API Vec128<uint8_t, 8> U8FromU32(con
return BitCast(Simd<uint8_t, 8>(), pair);
}
-// ------------------------------ Convert integer <=> floating point
+// ------------------------------ Integer <=> fp (ShiftRight, OddEven)
HWY_API Vec256<float> ConvertTo(Full256<float> /* tag */,
const Vec256<int32_t> v) {
@@ -2421,13 +2464,20 @@ HWY_API Vec256<double> ConvertTo(Full256
(void)dd;
return Vec256<double>{_mm256_cvtepi64_pd(v.raw)};
#else
- alignas(32) int64_t lanes_i[4];
- Store(v, Full256<int64_t>(), lanes_i);
- alignas(32) double lanes_d[4];
- for (size_t i = 0; i < 4; ++i) {
- lanes_d[i] = static_cast<double>(lanes_i[i]);
- }
- return Load(dd, lanes_d);
+ // Based on wim's approach (https://stackoverflow.com/questions/41144668/)
+ const Repartition<uint32_t, decltype(dd)> d32;
+ const Repartition<uint64_t, decltype(dd)> d64;
+
+ // Toggle MSB of lower 32-bits and insert exponent for 2^84 + 2^63
+ const auto k84_63 = Set(d64, 0x4530000080000000ULL);
+ const auto v_upper = BitCast(dd, ShiftRight<32>(BitCast(d64, v)) ^ k84_63);
+
+ // Exponent is 2^52, lower 32 bits from v (=> 32-bit OddEven)
+ const auto k52 = Set(d32, 0x43300000);
+ const auto v_lower = BitCast(dd, OddEven(k52, BitCast(d32, v)));
+
+ const auto k84_63_52 = BitCast(dd, Set(d64, 0x4530000080100000ULL));
+ return (v_upper - k84_63_52) + v_lower; // order matters!
#endif
}
@@ -2502,8 +2552,7 @@ HWY_API uint64_t BitsFromMask(hwy::SizeT
const auto compressed =
_mm256_permute4x64_epi64(sign_bits, _MM_SHUFFLE(3, 1, 2, 0));
return static_cast<unsigned>(_mm256_movemask_epi8(compressed));
-
-#endif
+#endif // HWY_ARCH_X86_64
}
template <typename T>
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/targets.cc.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/targets.cc
--- chromium-92.0.4515.107/third_party/highway/src/hwy/targets.cc.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/targets.cc 2021-07-26 17:17:24.610482240 -0400
@@ -32,8 +32,8 @@
#include <intrin.h>
#else // HWY_COMPILER_MSVC
#include <cpuid.h>
-#endif // HWY_COMPILER_MSVC
-#endif
+#endif // HWY_COMPILER_MSVC
+#endif // HWY_ARCH_X86
namespace hwy {
namespace {
@@ -126,7 +126,7 @@ constexpr uint32_t kAVX512VL = 1u << 13;
constexpr uint32_t kAVX512DQ = 1u << 14;
constexpr uint32_t kAVX512BW = 1u << 15;
constexpr uint32_t kGroupAVX3 = kAVX512F | kAVX512VL | kAVX512DQ | kAVX512BW;
-#endif
+#endif // HWY_ARCH_X86
} // namespace
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/targets.h.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/targets.h
--- chromium-92.0.4515.107/third_party/highway/src/hwy/targets.h.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/targets.h 2021-07-26 17:17:24.610482240 -0400
@@ -65,7 +65,9 @@
// HWY_MAX_DYNAMIC_TARGETS in total.
#define HWY_HIGHEST_TARGET_BIT_X86 9
-// 0x400, 0x800, 0x1000 reserved for SVE, SVE2, Helium
+#define HWY_SVE2 0x400
+#define HWY_SVE 0x800
+// 0x1000 reserved for Helium
#define HWY_NEON 0x2000
#define HWY_HIGHEST_TARGET_BIT_ARM 13
@@ -90,6 +92,9 @@
// 0x2000000, 0x4000000, 0x8000000, 0x10000000 reserved
#define HWY_SCALAR 0x20000000
+
+#define HWY_HIGHEST_TARGET_BIT_SCALAR 29
+
// Cannot use higher values, otherwise HWY_TARGETS computation might overflow.
//------------------------------------------------------------------------------
@@ -106,25 +111,26 @@
#ifndef HWY_BROKEN_TARGETS
// x86 clang-6: we saw multiple AVX2/3 compile errors and in one case invalid
-// SSE4 codegen (msan failure), so disable all those targets.
+// SSE4 codegen (possibly only for msan), so disable all those targets.
#if HWY_ARCH_X86 && (HWY_COMPILER_CLANG != 0 && HWY_COMPILER_CLANG < 700)
-// TODO: Disable all non-scalar targets for every build target once we have
-// clang-7 enabled in our builders.
-#ifdef MEMORY_SANITIZER
#define HWY_BROKEN_TARGETS (HWY_SSE4 | HWY_AVX2 | HWY_AVX3)
-#else
-#define HWY_BROKEN_TARGETS 0
-#endif
// This entails a major speed reduction, so warn unless the user explicitly
// opts in to scalar-only.
#if !defined(HWY_COMPILE_ONLY_SCALAR)
#pragma message("x86 Clang <= 6: define HWY_COMPILE_ONLY_SCALAR or upgrade.")
#endif
-// MSVC, or 32-bit may fail to compile AVX2/3.
-#elif HWY_COMPILER_MSVC != 0 || HWY_ARCH_X86_32
+// 32-bit may fail to compile AVX2/3.
+#elif HWY_ARCH_X86_32
#define HWY_BROKEN_TARGETS (HWY_AVX2 | HWY_AVX3)
-#pragma message("Disabling AVX2/3 due to known issues with MSVC/32-bit builds")
+
+// MSVC AVX3 support is buggy: https://github.com/Mysticial/Flops/issues/16
+#elif HWY_COMPILER_MSVC != 0
+#define HWY_BROKEN_TARGETS (HWY_AVX3)
+
+// armv7be has not been tested and is not yet supported.
+#elif HWY_ARCH_ARM_V7 && (defined(__ARM_BIG_ENDIAN) || defined(__BIG_ENDIAN))
+#define HWY_BROKEN_TARGETS (HWY_NEON)
#else
#define HWY_BROKEN_TARGETS 0
@@ -145,53 +151,74 @@
// user to override this without any guarantee of success.
#ifndef HWY_BASELINE_TARGETS
-#ifdef __wasm_simd128__
+// Also check HWY_ARCH to ensure that simulating unknown platforms ends up with
+// HWY_TARGET == HWY_SCALAR.
+
+#if HWY_ARCH_WASM && defined(__wasm_simd128__)
#define HWY_BASELINE_WASM HWY_WASM
#else
#define HWY_BASELINE_WASM 0
#endif
-#ifdef __VSX__
+// Avoid choosing the PPC target until we have an implementation.
+#if HWY_ARCH_PPC && defined(__VSX__) && 0
#define HWY_BASELINE_PPC8 HWY_PPC8
#else
#define HWY_BASELINE_PPC8 0
#endif
-// GCC 4.5.4 only defines the former; 5.4 defines both.
-#if defined(__ARM_NEON__) || defined(__ARM_NEON)
+// Avoid choosing the SVE[2] targets the implementation is ready.
+#if HWY_ARCH_ARM && defined(__ARM_FEATURE_SVE2) && 0
+#define HWY_BASELINE_SVE2 HWY_SVE2
+#else
+#define HWY_BASELINE_SVE2 0
+#endif
+
+#if HWY_ARCH_ARM && defined(__ARM_FEATURE_SVE) && 0
+#define HWY_BASELINE_SVE HWY_SVE
+#else
+#define HWY_BASELINE_SVE 0
+#endif
+
+// GCC 4.5.4 only defines __ARM_NEON__; 5.4 defines both.
+#if HWY_ARCH_ARM && (defined(__ARM_NEON__) || defined(__ARM_NEON))
#define HWY_BASELINE_NEON HWY_NEON
#else
#define HWY_BASELINE_NEON 0
#endif
-#ifdef __SSE4_1__
+// MSVC does not set SSE4_1, but it does set AVX; checking for the latter means
+// we at least get SSE4 on machines supporting AVX but not AVX2.
+// https://stackoverflow.com/questions/18563978/
+#if HWY_ARCH_X86 && \
+ (defined(__SSE4_1__) || (HWY_COMPILER_MSVC != 0 && defined(__AVX__)))
#define HWY_BASELINE_SSE4 HWY_SSE4
#else
#define HWY_BASELINE_SSE4 0
#endif
-#ifdef __AVX2__
+#if HWY_ARCH_X86 && defined(__AVX2__)
#define HWY_BASELINE_AVX2 HWY_AVX2
#else
#define HWY_BASELINE_AVX2 0
#endif
-#ifdef __AVX512F__
+#if HWY_ARCH_X86 && defined(__AVX512F__)
#define HWY_BASELINE_AVX3 HWY_AVX3
#else
#define HWY_BASELINE_AVX3 0
#endif
-#ifdef __riscv_vector
+#if HWY_ARCH_RVV && defined(__riscv_vector)
#define HWY_BASELINE_RVV HWY_RVV
#else
#define HWY_BASELINE_RVV 0
#endif
#define HWY_BASELINE_TARGETS \
- (HWY_SCALAR | HWY_BASELINE_WASM | HWY_BASELINE_PPC8 | HWY_BASELINE_NEON | \
- HWY_BASELINE_SSE4 | HWY_BASELINE_AVX2 | HWY_BASELINE_AVX3 | \
- HWY_BASELINE_RVV)
+ (HWY_SCALAR | HWY_BASELINE_WASM | HWY_BASELINE_PPC8 | HWY_BASELINE_SVE2 | \
+ HWY_BASELINE_SVE | HWY_BASELINE_NEON | HWY_BASELINE_SSE4 | \
+ HWY_BASELINE_AVX2 | HWY_BASELINE_AVX3 | HWY_BASELINE_RVV)
#endif // HWY_BASELINE_TARGETS
@@ -242,13 +269,12 @@
#define HWY_TARGETS HWY_STATIC_TARGET
// 3) For tests: include all attainable targets (in particular: scalar)
-#elif defined(HWY_COMPILE_ALL_ATTAINABLE)
+#elif defined(HWY_COMPILE_ALL_ATTAINABLE) || defined(HWY_IS_TEST)
#define HWY_TARGETS HWY_ATTAINABLE_TARGETS
// 4) Default: attainable WITHOUT non-best baseline. This reduces code size by
// excluding superseded targets, in particular scalar.
#else
-
#define HWY_TARGETS (HWY_ATTAINABLE_TARGETS & (2 * HWY_STATIC_TARGET - 1))
#endif // target policy
@@ -323,6 +349,10 @@ static inline HWY_MAYBE_UNUSED const cha
#endif
#if HWY_ARCH_ARM
+ case HWY_SVE2:
+ return "SVE2";
+ case HWY_SVE:
+ return "SVE";
case HWY_NEON:
return "Neon";
#endif
@@ -346,7 +376,7 @@ static inline HWY_MAYBE_UNUSED const cha
return "Scalar";
default:
- return "?";
+ return "Unknown"; // must satisfy gtest IsValidParamName()
}
}
@@ -405,21 +435,17 @@ static inline HWY_MAYBE_UNUSED const cha
nullptr, /* SSE3 */ \
nullptr /* SSE2 */
-#endif // HWY_ARCH_X86
-
-#if HWY_ARCH_ARM
+#elif HWY_ARCH_ARM
// See HWY_ARCH_X86 above for details.
#define HWY_MAX_DYNAMIC_TARGETS 4
#define HWY_HIGHEST_TARGET_BIT HWY_HIGHEST_TARGET_BIT_ARM
#define HWY_CHOOSE_TARGET_LIST(func_name) \
- nullptr, /* reserved */ \
- nullptr, /* reserved */ \
+ HWY_CHOOSE_SVE2(func_name), /* SVE2 */ \
+ HWY_CHOOSE_SVE(func_name), /* SVE */ \
nullptr, /* reserved */ \
HWY_CHOOSE_NEON(func_name) /* NEON */
-#endif // HWY_ARCH_ARM
-
-#if HWY_ARCH_PPC
+#elif HWY_ARCH_PPC
// See HWY_ARCH_X86 above for details.
#define HWY_MAX_DYNAMIC_TARGETS 5
#define HWY_HIGHEST_TARGET_BIT HWY_HIGHEST_TARGET_BIT_PPC
@@ -430,9 +456,7 @@ static inline HWY_MAYBE_UNUSED const cha
nullptr, /* VSX */ \
nullptr /* AltiVec */
-#endif // HWY_ARCH_PPC
-
-#if HWY_ARCH_WASM
+#elif HWY_ARCH_WASM
// See HWY_ARCH_X86 above for details.
#define HWY_MAX_DYNAMIC_TARGETS 4
#define HWY_HIGHEST_TARGET_BIT HWY_HIGHEST_TARGET_BIT_WASM
@@ -442,9 +466,7 @@ static inline HWY_MAYBE_UNUSED const cha
nullptr, /* reserved */ \
HWY_CHOOSE_WASM(func_name) /* WASM */
-#endif // HWY_ARCH_WASM
-
-#if HWY_ARCH_RVV
+#elif HWY_ARCH_RVV
// See HWY_ARCH_X86 above for details.
#define HWY_MAX_DYNAMIC_TARGETS 4
#define HWY_HIGHEST_TARGET_BIT HWY_HIGHEST_TARGET_BIT_RVV
@@ -454,7 +476,12 @@ static inline HWY_MAYBE_UNUSED const cha
nullptr, /* reserved */ \
HWY_CHOOSE_RVV(func_name) /* RVV */
-#endif // HWY_ARCH_RVV
+#else
+// Unknown architecture, will use HWY_SCALAR without dynamic dispatch, though
+// still creating single-entry tables in HWY_EXPORT to ensure portability.
+#define HWY_MAX_DYNAMIC_TARGETS 1
+#define HWY_HIGHEST_TARGET_BIT HWY_HIGHEST_TARGET_BIT_SCALAR
+#endif
struct ChosenTarget {
public:
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/tests/memory_test.cc.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/tests/memory_test.cc
--- chromium-92.0.4515.107/third_party/highway/src/hwy/tests/memory_test.cc.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/tests/memory_test.cc 2021-07-26 17:10:40.022319820 -0400
@@ -12,6 +12,12 @@
// See the License for the specific language governing permissions and
// limitations under the License.
+// Ensure incompabilities with Windows macros (e.g. #define StoreFence) are
+// detected. Must come before Highway headers.
+#if defined(_WIN32) || defined(_WIN64)
+#include <Windows.h>
+#endif
+
#include <stddef.h>
#include <stdint.h>
@@ -199,13 +205,14 @@ struct TestLoadDup128 {
for (size_t i = 0; i < N128; ++i) {
lanes[i] = static_cast<T>(1 + i);
}
- const auto v = LoadDup128(d, lanes);
+
const size_t N = Lanes(d);
- auto out = AllocateAligned<T>(N);
- Store(v, d, out.get());
+ auto expected = AllocateAligned<T>(N);
for (size_t i = 0; i < N; ++i) {
- HWY_ASSERT_EQ(T(i % N128 + 1), out[i]);
+ expected[i] = static_cast<T>(i % N128 + 1);
}
+
+ HWY_ASSERT_VEC_EQ(d, expected.get(), LoadDup128(d, lanes));
#else
(void)d;
#endif
@@ -327,6 +334,84 @@ HWY_NOINLINE void TestAllScatter() {
ForFloatTypes(test);
}
+// Assumes little-endian byte order!
+struct TestScatter {
+ template <class T, class D>
+ HWY_NOINLINE void operator()(T /*unused*/, D d) {
+ using Offset = MakeSigned<T>;
+
+ const size_t N = Lanes(d);
+ const size_t range = 4 * N; // number of items to scatter
+ const size_t max_bytes = range * sizeof(T); // upper bound on offset
+
+ RandomState rng;
+
+ // Data to be scattered
+ auto bytes = AllocateAligned<uint8_t>(max_bytes);
+ for (size_t i = 0; i < max_bytes; ++i) {
+ bytes[i] = static_cast<uint8_t>(Random32(&rng) & 0xFF);
+ }
+ const auto data = Load(d, reinterpret_cast<const T*>(bytes.get()));
+
+ // Scatter into these regions, ensure vector results match scalar
+ auto expected = AllocateAligned<T>(range);
+ auto actual = AllocateAligned<T>(range);
+
+ const Rebind<Offset, D> d_offsets;
+ auto offsets = AllocateAligned<Offset>(N); // or indices
+
+ for (size_t rep = 0; rep < 100; ++rep) {
+ // Byte offsets
+ std::fill(expected.get(), expected.get() + range, T(0));
+ std::fill(actual.get(), actual.get() + range, T(0));
+ for (size_t i = 0; i < N; ++i) {
+ offsets[i] =
+ static_cast<Offset>(Random32(&rng) % (max_bytes - sizeof(T)));
+ CopyBytes<sizeof(T)>(
+ bytes.get() + i * sizeof(T),
+ reinterpret_cast<uint8_t*>(expected.get()) + offsets[i]);
+ }
+ const auto voffsets = Load(d_offsets, offsets.get());
+ ScatterOffset(data, d, actual.get(), voffsets);
+ if (!BytesEqual(expected.get(), actual.get(), max_bytes)) {
+ Print(d, "Data", data);
+ Print(d_offsets, "Offsets", voffsets);
+ HWY_ASSERT(false);
+ }
+
+ // Indices
+ std::fill(expected.get(), expected.get() + range, T(0));
+ std::fill(actual.get(), actual.get() + range, T(0));
+ for (size_t i = 0; i < N; ++i) {
+ offsets[i] = static_cast<Offset>(Random32(&rng) % range);
+ CopyBytes<sizeof(T)>(bytes.get() + i * sizeof(T),
+ &expected[offsets[i]]);
+ }
+ const auto vindices = Load(d_offsets, offsets.get());
+ ScatterIndex(data, d, actual.get(), vindices);
+ if (!BytesEqual(expected.get(), actual.get(), max_bytes)) {
+ Print(d, "Data", data);
+ Print(d_offsets, "Indices", vindices);
+ HWY_ASSERT(false);
+ }
+ }
+ }
+};
+
+HWY_NOINLINE void TestAllScatter() {
+ // No u8,u16,i8,i16.
+ const ForPartialVectors<TestScatter> test;
+ test(uint32_t());
+ test(int32_t());
+
+#if HWY_CAP_INTEGER64
+ test(uint64_t());
+ test(int64_t());
+#endif
+
+ ForFloatTypes(test);
+}
+
struct TestGather {
template <class T, class D>
HWY_NOINLINE void operator()(T /*unused*/, D d) {
@@ -391,6 +476,7 @@ HWY_NOINLINE void TestAllCache() {
int test = 0;
Prefetch(&test);
FlushCacheline(&test);
+ Pause();
}
// NOLINTNEXTLINE(google-readability-namespace-comments)
diff -up chromium-92.0.4515.107/third_party/highway/src/hwy/tests/swizzle_test.cc.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/hwy/tests/swizzle_test.cc
--- chromium-92.0.4515.107/third_party/highway/src/hwy/tests/swizzle_test.cc.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/hwy/tests/swizzle_test.cc 2021-07-26 17:10:40.023319835 -0400
@@ -223,6 +223,7 @@ struct TestTableLookupBytes {
HWY_NOINLINE void TestAllTableLookupBytes() {
ForIntegerTypes(ForPartialVectors<TestTableLookupBytes>());
}
+
struct TestTableLookupLanes {
#if HWY_TARGET == HWY_RVV
using Index = uint32_t;
@@ -242,12 +243,13 @@ struct TestTableLookupLanes {
if (N <= 8) { // Test all permutations
for (size_t i0 = 0; i0 < N; ++i0) {
idx[0] = static_cast<Index>(i0);
+
for (size_t i1 = 0; i1 < N; ++i1) {
- idx[1] = static_cast<Index>(i1);
+ if (N >= 2) idx[1] = static_cast<Index>(i1);
for (size_t i2 = 0; i2 < N; ++i2) {
- idx[2] = static_cast<Index>(i2);
+ if (N >= 4) idx[2] = static_cast<Index>(i2);
for (size_t i3 = 0; i3 < N; ++i3) {
- idx[3] = static_cast<Index>(i3);
+ if (N >= 4) idx[3] = static_cast<Index>(i3);
for (size_t i = 0; i < N; ++i) {
expected[i] = static_cast<T>(idx[i] + 1); // == v[idx[i]]
@@ -286,7 +288,7 @@ struct TestTableLookupLanes {
};
HWY_NOINLINE void TestAllTableLookupLanes() {
- const ForFullVectors<TestTableLookupLanes> test;
+ const ForPartialVectors<TestTableLookupLanes> test;
test(uint32_t());
test(int32_t());
test(float());
diff -up chromium-92.0.4515.107/third_party/highway/src/README.md.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/README.md
--- chromium-92.0.4515.107/third_party/highway/src/README.md.update-highway-0.12.2 2021-07-26 17:10:40.838332249 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/README.md 2021-07-26 17:15:00.832292309 -0400
@@ -15,7 +15,7 @@ applying the same operation to 'lanes'.
## Current status
Supported targets: scalar, SSE4, AVX2, AVX-512, NEON (ARMv7 and v8), WASM SIMD.
-A port to RVV is in progress.
+Ports to RVV and SVE/SVE2 are in progress.
Version 0.11 is considered stable enough to use in other projects, and is
expected to remain backwards compatible unless serious issues are discovered
@@ -23,8 +23,11 @@ while implementing SVE/RVV targets. Afte
reach version 1.0.
Continuous integration tests build with a recent version of Clang (running on
-x86 and QEMU for ARM) and MSVC from VS2015 (running on x86). Also periodically
-tested on x86 with Clang 7-11 and GCC 8, 9 and 10.2.1.
+x86 and QEMU for ARM) and MSVC from VS2015 (running on x86).
+
+Before releases, we also test on x86 with Clang and GCC, and ARMv7/8 via
+GCC cross-compile and QEMU. See the
+[testing process](g3doc/release_testing_process.md) for details.
The `contrib` directory contains SIMD-related utilities: an image class with
aligned rows, and a math library (16 functions already implemented, mostly
@@ -63,6 +66,8 @@ To test on all the attainable targets fo
default configuration skips baseline targets (e.g. scalar) that are superseded
by another baseline target.
+Bazel is also supported for building, but it is not as widely used/tested.
+
## Quick start
You can use the `benchmark` inside examples/ as a starting point.
diff -up chromium-92.0.4515.107/third_party/highway/src/run_tests.bat.update-highway-0.12.2 chromium-92.0.4515.107/third_party/highway/src/run_tests.bat
--- chromium-92.0.4515.107/third_party/highway/src/run_tests.bat.update-highway-0.12.2 2021-07-19 14:47:23.000000000 -0400
+++ chromium-92.0.4515.107/third_party/highway/src/run_tests.bat 2021-07-26 17:14:47.466088723 -0400
@@ -2,9 +2,9 @@
REM Switch directory of this batch file
cd %~dp0
-if not exist build mkdir build
+if not exist build_win mkdir build_win
-cd build
+cd build_win
cmake .. -G Ninja || goto error
ninja || goto error
ctest -j || goto error
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