| commit | 1814df5b02b9c359052c2048a1d2d617b406a17a | |
| author | H.J. Lu <hjl.tools@gmail.com> | |
| Tue, 18 Aug 2015 14:59:49 +0000 (18 07:59 -0700) | ||
| committer | H.J. Lu <hjl.tools@gmail.com> | |
| Tue, 18 Aug 2015 15:00:00 +0000 (18 08:00 -0700) | ||
| tree | 30f5786d3e53d6043ecaab75bdb71cddf6567368 | treesnapshot (tar.gz zip) |
| parent | 441c3b59d1e2fca4ad40cf53d03d6196c978e85f | commitdiff |
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.
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.
| ChangeLog | diffblobblamehistory | |
| sysdeps/x86/cpu-features.c | diffblobblamehistory | |
| sysdeps/x86/cpu-features.h | diffblobblamehistory |