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| author | H.J. Lu <hjl.tools@gmail.com> | 2018-10-17 15:16:38 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-10-17 15:16:45 -0700 |
| commit | 72771e53753647111d31c5c4bf43d8901e6baf7e (patch) | |
| tree | 66c4a0605d4624372f8e6742bf0c417ceaba8d43 /ChangeLog | |
| parent | c2b7ccad93d6361eba91755e8f0c92e97c76e854 (diff) | |
| download | glibc-72771e53753647111d31c5c4bf43d8901e6baf7e.tar.gz glibc-72771e53753647111d31c5c4bf43d8901e6baf7e.tar.xz glibc-72771e53753647111d31c5c4bf43d8901e6baf7e.zip | |
x86: Use _rdtsc intrinsic for HP_TIMING_NOW
Since _rdtsc intrinsic is supported in GCC 4.9, we can use it for HP_TIMING_NOW. This patch 1. Create x86 hp-timing.h to replace i686 and x86_64 hp-timing.h. 2. Move MINIMUM_ISA from init-arch.h to isa.h so that x86 hp-timing.h can check minimum x86 ISA to decide if _rdtsc can be used. NB: Checking if __i686__ isn't sufficient since __i686__ may not be defined when building for i686 class processors. * sysdeps/i386/init-arch.h: Removed. * sysdeps/i386/i586/init-arch.h: Likewise. * sysdeps/i386/i686/init-arch.h: Likewise. * sysdeps/i386/i686/hp-timing.h: Likewise. * sysdeps/x86_64/hp-timing.h: Likewise. * sysdeps/i386/isa.h: New file. * sysdeps/i386/i586/isa.h: Likewise. * sysdeps/i386/i686/isa.h: Likewise. * sysdeps/x86_64/isa.h: Likewise. * sysdeps/x86/hp-timing.h: New file. * sysdeps/x86/init-arch.h: Include <isa.h>.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 450732e565..e8f2dbb7c9 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,17 @@ +2018-10-17 H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/i386/init-arch.h: Removed. + * sysdeps/i386/i586/init-arch.h: Likewise. + * sysdeps/i386/i686/init-arch.h: Likewise. + * sysdeps/i386/i686/hp-timing.h: Likewise. + * sysdeps/x86_64/hp-timing.h: Likewise. + * sysdeps/i386/isa.h: New file. + * sysdeps/i386/i586/isa.h: Likewise. + * sysdeps/i386/i686/isa.h: Likewise. + * sysdeps/x86_64/isa.h: Likewise. + * sysdeps/x86/hp-timing.h: New file. + * sysdeps/x86/init-arch.h: Include <isa.h>. + 2018-10-17 Joseph Myers <joseph@codesourcery.com> * math/libm-test-pow.inc (pow_test_data): Do not allow |