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gcc/gcc44-atom-movbe.patch

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2009-05-21 H.J. Lu <hongjiu.lu@intel.com>
Uros Bizjak <ubizjak@gmail.com>
* config/i386/cpuid.h (bit_MOVBE): New.
* config/i386/driver-i386.c (host_detect_local_cpu): Check movbe.
* config/i386/i386.c (OPTION_MASK_ISA_MOVBE_SET): New.
(OPTION_MASK_ISA_MOVBE_UNSET): Likewise.
(ix86_handle_option): Handle OPT_mmovbe.
(ix86_target_string): Add -mmovbe.
(pta_flags): Add PTA_MOVBE.
(processor_alias_table): Add PTA_MOVBE to "atom".
(override_options): Handle PTA_MOVBE.
* config/i386/i386.h (TARGET_MOVBE): New.
* config/i386/i386.md (bswapsi2): Check TARGET_MOVBE.
(*bswapsi_movbe): New.
(*bswapdi_movbe): Likewise.
(bswapdi2): Renamed to ...
(*bswapdi_1): This.
(bswapdi2): New expander.
* config/i386/i386.opt (mmovbe): New.
* doc/invoke.texi: Document -mmovbe.
* gcc.target/i386/movbe-1.c: New.
* gcc.target/i386/movbe-2.c: Likewise.
--- gcc/doc/invoke.texi (revision 147772)
+++ gcc/doc/invoke.texi (revision 147773)
@@ -577,7 +577,7 @@ Objective-C and Objective-C++ Dialects}.
-mno-wide-multiply -mrtd -malign-double @gol
-mpreferred-stack-boundary=@var{num}
-mincoming-stack-boundary=@var{num}
--mcld -mcx16 -msahf -mrecip @gol
+-mcld -mcx16 -msahf -mmovbe -mrecip @gol
-mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -msse4 -mavx @gol
-maes -mpclmul @gol
-msse4a -m3dnow -mpopcnt -mabm -msse5 @gol
@@ -11458,6 +11458,11 @@ SAHF are load and store instructions, re
In 64-bit mode, SAHF instruction is used to optimize @code{fmod}, @code{drem}
or @code{remainder} built-in functions: see @ref{Other Builtins} for details.
+@item -mmovbe
+@opindex mmovbe
+This option will enable GCC to use movbe instruction to implement
+@code{__builtin_bswap32} and @code{__builtin_bswap64}.
+
@item -mrecip
@opindex mrecip
This option will enable GCC to use RCPSS and RSQRTSS instructions (and their
--- gcc/testsuite/gcc.target/i386/movbe-1.c (revision 0)
+++ gcc/testsuite/gcc.target/i386/movbe-1.c (revision 147773)
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mmovbe" } */
+
+extern int x;
+
+void
+foo (int i)
+{
+ x = __builtin_bswap32 (i);
+}
+
+int
+bar ()
+{
+ return __builtin_bswap32 (x);
+}
+
+/* { dg-final { scan-assembler-times "movbe\[ \t\]" 2 } } */
--- gcc/testsuite/gcc.target/i386/movbe-2.c (revision 0)
+++ gcc/testsuite/gcc.target/i386/movbe-2.c (revision 147773)
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mmovbe" } */
+
+extern long long x;
+
+void
+foo (long long i)
+{
+ x = __builtin_bswap64 (i);
+}
+
+long long
+bar ()
+{
+ return __builtin_bswap64 (x);
+}
+
+/* { dg-final { scan-assembler-times "movbe\[ \t\]" 4 { target ilp32 } } } */
+/* { dg-final { scan-assembler-times "movbe\[ \t\]" 2 { target lp64 } } } */
--- gcc/config/i386/i386.h (revision 147772)
+++ gcc/config/i386/i386.h (revision 147773)
@@ -59,6 +59,7 @@ see the files COPYING3 and COPYING.RUNTI
#define TARGET_ABM OPTION_ISA_ABM
#define TARGET_POPCNT OPTION_ISA_POPCNT
#define TARGET_SAHF OPTION_ISA_SAHF
+#define TARGET_MOVBE OPTION_ISA_MOVBE
#define TARGET_AES OPTION_ISA_AES
#define TARGET_PCLMUL OPTION_ISA_PCLMUL
#define TARGET_CMPXCHG16B OPTION_ISA_CX16
--- gcc/config/i386/i386.md (revision 147772)
+++ gcc/config/i386/i386.md (revision 147773)
@@ -16105,7 +16105,7 @@ (define_expand "bswapsi2"
(bswap:SI (match_operand:SI 1 "register_operand" "")))]
""
{
- if (!TARGET_BSWAP)
+ if (!(TARGET_BSWAP || TARGET_MOVBE))
{
rtx x = operands[0];
@@ -16117,6 +16117,21 @@ (define_expand "bswapsi2"
}
})
+(define_insn "*bswapsi_movbe"
+ [(set (match_operand:SI 0 "nonimmediate_operand" "=r,r,m")
+ (bswap:SI (match_operand:SI 1 "nonimmediate_operand" "0,m,r")))]
+ "TARGET_MOVBE && !(MEM_P (operands[0]) && MEM_P (operands[1]))"
+ "@
+ bswap\t%0
+ movbe\t{%1, %0|%0, %1}
+ movbe\t{%1, %0|%0, %1}"
+ [(set_attr "type" "*,imov,imov")
+ (set_attr "modrm" "*,1,1")
+ (set_attr "prefix_0f" "1")
+ (set_attr "prefix_extra" "*,1,1")
+ (set_attr "length" "2,*,*")
+ (set_attr "mode" "SI")])
+
(define_insn "*bswapsi_1"
[(set (match_operand:SI 0 "register_operand" "=r")
(bswap:SI (match_operand:SI 1 "register_operand" "0")))]
@@ -16145,7 +16160,29 @@ (define_insn "bswaphi_lowpart"
[(set_attr "length" "4")
(set_attr "mode" "HI")])
-(define_insn "bswapdi2"
+(define_expand "bswapdi2"
+ [(set (match_operand:DI 0 "register_operand" "")
+ (bswap:DI (match_operand:DI 1 "register_operand" "")))]
+ "TARGET_64BIT"
+ "")
+
+(define_insn "*bswapdi_movbe"
+ [(set (match_operand:DI 0 "nonimmediate_operand" "=r,r,m")
+ (bswap:DI (match_operand:DI 1 "nonimmediate_operand" "0,m,r")))]
+ "TARGET_64BIT && TARGET_MOVBE
+ && !(MEM_P (operands[0]) && MEM_P (operands[1]))"
+ "@
+ bswap\t%0
+ movbe\t{%1, %0|%0, %1}
+ movbe\t{%1, %0|%0, %1}"
+ [(set_attr "type" "*,imov,imov")
+ (set_attr "modrm" "*,1,1")
+ (set_attr "prefix_0f" "1")
+ (set_attr "prefix_extra" "*,1,1")
+ (set_attr "length" "3,*,*")
+ (set_attr "mode" "DI")])
+
+(define_insn "*bswapdi_1"
[(set (match_operand:DI 0 "register_operand" "=r")
(bswap:DI (match_operand:DI 1 "register_operand" "0")))]
"TARGET_64BIT"
--- gcc/config/i386/cpuid.h (revision 147772)
+++ gcc/config/i386/cpuid.h (revision 147773)
@@ -29,6 +29,7 @@
#define bit_CMPXCHG16B (1 << 13)
#define bit_SSE4_1 (1 << 19)
#define bit_SSE4_2 (1 << 20)
+#define bit_MOVBE (1 << 22)
#define bit_POPCNT (1 << 23)
#define bit_AES (1 << 25)
#define bit_XSAVE (1 << 26)
--- gcc/config/i386/i386.opt (revision 147772)
+++ gcc/config/i386/i386.opt (revision 147773)
@@ -339,6 +339,10 @@ msahf
Target Report Mask(ISA_SAHF) Var(ix86_isa_flags) VarExists Save
Support code generation of sahf instruction in 64bit x86-64 code.
+mmovbe
+Target Report Mask(ISA_MOVBE) Var(ix86_isa_flags) VarExists Save
+Support code generation of movbe instruction.
+
maes
Target Report Mask(ISA_AES) Var(ix86_isa_flags) VarExists Save
Support AES built-in functions and code generation
--- gcc/config/i386/driver-i386.c (revision 147772)
+++ gcc/config/i386/driver-i386.c (revision 147773)
@@ -378,7 +378,7 @@ const char *host_detect_local_cpu (int a
/* Extended features */
unsigned int has_lahf_lm = 0, has_sse4a = 0;
unsigned int has_longmode = 0, has_3dnowp = 0, has_3dnow = 0;
- unsigned int has_sse4_1 = 0, has_sse4_2 = 0;
+ unsigned int has_movbe = 0, has_sse4_1 = 0, has_sse4_2 = 0;
unsigned int has_popcnt = 0, has_aes = 0, has_avx = 0;
unsigned int has_pclmul = 0;
@@ -408,6 +408,7 @@ const char *host_detect_local_cpu (int a
has_sse4_2 = ecx & bit_SSE4_2;
has_avx = ecx & bit_AVX;
has_cmpxchg16b = ecx & bit_CMPXCHG16B;
+ has_movbe = ecx & bit_MOVBE;
has_popcnt = ecx & bit_POPCNT;
has_aes = ecx & bit_AES;
has_pclmul = ecx & bit_PCLMUL;
@@ -597,6 +598,8 @@ const char *host_detect_local_cpu (int a
options = concat (options, "-mcx16 ", NULL);
if (has_lahf_lm)
options = concat (options, "-msahf ", NULL);
+ if (has_movbe)
+ options = concat (options, "-mmovbe ", NULL);
if (has_aes)
options = concat (options, "-maes ", NULL);
if (has_pclmul)
--- gcc/config/i386/i386.c (revision 147772)
+++ gcc/config/i386/i386.c (revision 147773)
@@ -1965,9 +1965,11 @@ static int ix86_isa_flags_explicit;
#define OPTION_MASK_ISA_ABM_SET \
(OPTION_MASK_ISA_ABM | OPTION_MASK_ISA_POPCNT)
+
#define OPTION_MASK_ISA_POPCNT_SET OPTION_MASK_ISA_POPCNT
#define OPTION_MASK_ISA_CX16_SET OPTION_MASK_ISA_CX16
#define OPTION_MASK_ISA_SAHF_SET OPTION_MASK_ISA_SAHF
+#define OPTION_MASK_ISA_MOVBE_SET OPTION_MASK_ISA_MOVBE
/* Define a set of ISAs which aren't available when a given ISA is
disabled. MMX and SSE ISAs are handled separately. */
@@ -2009,6 +2011,7 @@ static int ix86_isa_flags_explicit;
#define OPTION_MASK_ISA_POPCNT_UNSET OPTION_MASK_ISA_POPCNT
#define OPTION_MASK_ISA_CX16_UNSET OPTION_MASK_ISA_CX16
#define OPTION_MASK_ISA_SAHF_UNSET OPTION_MASK_ISA_SAHF
+#define OPTION_MASK_ISA_MOVBE_UNSET OPTION_MASK_ISA_MOVBE
/* Vectorization library interface and handlers. */
tree (*ix86_veclib_handler)(enum built_in_function, tree, tree) = NULL;
@@ -2299,6 +2302,19 @@ ix86_handle_option (size_t code, const c
}
return true;
+ case OPT_mmovbe:
+ if (value)
+ {
+ ix86_isa_flags |= OPTION_MASK_ISA_MOVBE_SET;
+ ix86_isa_flags_explicit |= OPTION_MASK_ISA_MOVBE_SET;
+ }
+ else
+ {
+ ix86_isa_flags &= ~OPTION_MASK_ISA_MOVBE_UNSET;
+ ix86_isa_flags_explicit |= OPTION_MASK_ISA_MOVBE_UNSET;
+ }
+ return true;
+
case OPT_maes:
if (value)
{
@@ -2361,6 +2377,7 @@ ix86_target_string (int isa, int flags,
{ "-mmmx", OPTION_MASK_ISA_MMX },
{ "-mabm", OPTION_MASK_ISA_ABM },
{ "-mpopcnt", OPTION_MASK_ISA_POPCNT },
+ { "-mmovbe", OPTION_MASK_ISA_MOVBE },
{ "-maes", OPTION_MASK_ISA_AES },
{ "-mpclmul", OPTION_MASK_ISA_PCLMUL },
};
@@ -2577,7 +2594,8 @@ override_options (bool main_args_p)
PTA_AES = 1 << 17,
PTA_PCLMUL = 1 << 18,
PTA_AVX = 1 << 19,
- PTA_FMA = 1 << 20
+ PTA_FMA = 1 << 20,
+ PTA_MOVBE = 1 << 21
};
static struct pta
@@ -2621,7 +2639,7 @@ override_options (bool main_args_p)
| PTA_SSSE3 | PTA_CX16},
{"atom", PROCESSOR_ATOM, CPU_ATOM,
PTA_64BIT | PTA_MMX | PTA_SSE | PTA_SSE2 | PTA_SSE3
- | PTA_SSSE3 | PTA_CX16},
+ | PTA_SSSE3 | PTA_CX16 | PTA_MOVBE},
{"geode", PROCESSOR_GEODE, CPU_GEODE,
PTA_MMX | PTA_3DNOW | PTA_3DNOW_A |PTA_PREFETCH_SSE},
{"k6", PROCESSOR_K6, CPU_K6, PTA_MMX},
@@ -2935,6 +2953,9 @@ override_options (bool main_args_p)
if (!(TARGET_64BIT && (processor_alias_table[i].flags & PTA_NO_SAHF))
&& !(ix86_isa_flags_explicit & OPTION_MASK_ISA_SAHF))
ix86_isa_flags |= OPTION_MASK_ISA_SAHF;
+ if (processor_alias_table[i].flags & PTA_MOVBE
+ && !(ix86_isa_flags_explicit & OPTION_MASK_ISA_MOVBE))
+ ix86_isa_flags |= OPTION_MASK_ISA_MOVBE;
if (processor_alias_table[i].flags & PTA_AES
&& !(ix86_isa_flags_explicit & OPTION_MASK_ISA_AES))
ix86_isa_flags |= OPTION_MASK_ISA_AES;
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