43 lines
1.5 KiB
Diff
43 lines
1.5 KiB
Diff
--- gcc/config/aarch64/aarch64-option-extensions.def
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+++ gcc/config/aarch64/aarch64-option-extensions.def
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@@ -44,7 +44,8 @@
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the extension (for example, the 'crypto' extension depends on four
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entries: aes, pmull, sha1, sha2 being present). In that case this field
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should contain a space (" ") separated list of the strings in 'Features'
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- that are required. Their order is not important. */
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+ that are required. Their order is not important. An empty string means
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+ do not detect this feature during auto detection. */
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/* Enabling "fp" just enables "fp".
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Disabling "fp" also disables "simd", "crypto", "fp16", "aes", "sha2",
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--- gcc/config/aarch64/driver-aarch64.c
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+++ gcc/config/aarch64/driver-aarch64.c
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@@ -253,6 +253,12 @@ host_detect_local_cpu (int argc, const char **argv)
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char *p = NULL;
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char *feat_string
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= concat (aarch64_extensions[i].feat_string, NULL);
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+
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+ /* If the feature contains no HWCAPS string then ignore it for the
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+ auto detection. */
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+ if (strlen (feat_string) == 0)
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+ continue;
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+
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bool enabled = true;
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/* This may be a multi-token feature string. We need
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--- gcc/testsuite/gcc.target/aarch64/options_set_10.c
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+++ gcc/testsuite/gcc.target/aarch64/options_set_10.c
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@@ -0,0 +1,11 @@
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+/* { dg-do compile { target "aarch64*-*-linux*" } } */
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+/* { dg-additional-options "-mcpu=native" } */
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+
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+int main ()
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+{
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+ return 0;
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+}
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+
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+/* { dg-final { scan-assembler-not {\.arch .+\+profile.*} } } */
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+
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+ /* Check that an empty feature string is not detected during mcpu=native. */
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