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| author | H.J. Lu <hjl.tools@gmail.com> | 2015-08-18 07:59:49 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2015-08-18 08:00:00 -0700 |
| commit | 1814df5b02b9c359052c2048a1d2d617b406a17a (patch) | |
| tree | 30f5786d3e53d6043ecaab75bdb71cddf6567368 /ChangeLog | |
| parent | 441c3b59d1e2fca4ad40cf53d03d6196c978e85f (diff) | |
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Define HAS_CPUID/HAS_I586/HAS_I686 from -march=
cpuid, i586 and i686 instructions are available if the processor
specified by -march= supports them. We can use this information
to determine whether those instructions can be used safely.
* sysdeps/x86/cpu-features.c (init_cpu_features): Check
whether cpuid is available only if HAS_CPUID is 0.
* sysdeps/x86/cpu-features.h (HAS_CPUID): New.
(HAS_I586): Likewise.
(HAS_I686): Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -1,3 +1,11 @@ +2015-08-18 H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/x86/cpu-features.c (init_cpu_features): Check + whether cpuid is available only if HAS_CPUID is 0. + * sysdeps/x86/cpu-features.h (HAS_CPUID): New. + (HAS_I586): Likewise. + (HAS_I686): Likewise. + 2015-08-18 Marko Myllynen <myllynen@redhat.com> [BZ #16973] |