diff options
Diffstat (limited to 'libatomic/config/x86/fenv.c')
| -rw-r--r-- | libatomic/config/x86/fenv.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/libatomic/config/x86/fenv.c b/libatomic/config/x86/fenv.c index d7b1bbe5ea1..d972a99f594 100644 --- a/libatomic/config/x86/fenv.c +++ b/libatomic/config/x86/fenv.c @@ -47,6 +47,12 @@ struct fenv unsigned short int __unused5; }; +#ifdef __SSE_MATH__ +# define __math_force_eval(x) asm volatile ("" : : "x" (x)); +#else +# define __math_force_eval(x) asm volatile ("" : : "f" (x)); +#endif + /* Raise the supported floating-point exceptions from EXCEPTS. Other bits in EXCEPTS are ignored. */ @@ -56,12 +62,7 @@ __atomic_feraiseexcept (int excepts) if (excepts & FE_INVALID) { float f = 0.0f; -#ifdef __SSE_MATH__ - asm volatile ("%vdivss\t{%0, %d0|%d0, %0}" : "+x" (f)); -#else - asm volatile ("fdiv\t{%y0, %0|%0, %y0}" : "+t" (f)); - /* No need for fwait, exception is triggered by emitted fstp. */ -#endif + __math_force_eval (f / f); } if (excepts & FE_DENORM) { @@ -74,12 +75,7 @@ __atomic_feraiseexcept (int excepts) if (excepts & FE_DIVBYZERO) { float f = 1.0f, g = 0.0f; -#ifdef __SSE_MATH__ - asm volatile ("%vdivss\t{%1, %d0|%d0, %1}" : "+x" (f) : "xm" (g)); -#else - asm volatile ("fdivs\t%1" : "+t" (f) : "m" (g)); - /* No need for fwait, exception is triggered by emitted fstp. */ -#endif + __math_force_eval (f / g); } if (excepts & FE_OVERFLOW) { |