From 72771e53753647111d31c5c4bf43d8901e6baf7e Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 17 Oct 2018 15:16:38 -0700 Subject: 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 . --- ChangeLog | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index 450732e..e8f2dbb 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,17 @@ +2018-10-17 H.J. Lu + + * 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 . + 2018-10-17 Joseph Myers * math/libm-test-pow.inc (pow_test_data): Do not allow -- cgit v1.1