From d5e16ade14822f1a125b6d568b1e3e1326e8868d Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Thu, 3 Jul 2014 08:56:55 -0700 Subject: [PATCH] alpha: Implement math_opt_barrier and math_force_eval --- ChangeLog | 3 +++ sysdeps/alpha/fpu/math_private.h | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/ChangeLog b/ChangeLog index 017003e..e84fbbf 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2014-07-03 Richard Henderson + * sysdeps/alpha/fpu/math_private.h (math_opt_barrier): New. + (math_force_eval): New. + * sysdeps/alpha/fpu/s_lround.c: Add 0.5 with chopped rounding. * sysdeps/alpha/fpu/s_lroundf.c: Likewise. diff --git a/sysdeps/alpha/fpu/math_private.h b/sysdeps/alpha/fpu/math_private.h index 22ab3b9..9e06e25 100644 --- a/sysdeps/alpha/fpu/math_private.h +++ b/sysdeps/alpha/fpu/math_private.h @@ -13,6 +13,12 @@ # define __isnanf __isnanf #endif +/* Generic code forces values to memory; we don't need to do that. */ +#define math_opt_barrier(x) \ + ({ __typeof (x) __x = (x); __asm ("" : "+frm" (__x)); __x; }) +#define math_force_eval(x) \ + ({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "frm" (__x)); }) + #include_next #ifdef __alpha_fix__ -- 2.7.4