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math: x86: Use prefix for FP_INIT_ROUNDMODE

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Not all compilers support the inline asm prefix '%v' to emit the avx
instruction if AVX is enable.  Use a prefix instead.

Checked on x86_64-linux-gnu and i686-linux-gnu.
This commit is contained in:
Adhemerval Zanella 2022-03-10 14:48:44 -03:00 committed by Pranav Kant
parent fe59db4d1b
commit aacd7e0eb6
1 changed files with 7 additions and 1 deletions
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8
sysdeps/x86/fpu/sfp-machine.h
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@ -48,9 +48,15 @@ typedef unsigned int UTItype __attribute__ ((mode (TI)));
# define FP_RND_MASK 0x6000
# ifdef __AVX__
# define AVX_INSN_PREFIX "v"
# else
# define AVX_INSN_PREFIX ""
# endif
# define FP_INIT_ROUNDMODE \
do { \
__asm__ __volatile__ ("%vstmxcsr\t%0" : "=m" (_fcw)); \
__asm__ __volatile__ (AVX_INSN_PREFIX "stmxcsr\t%0" : "=m" (_fcw)); \
} while (0)
#else
# define _FP_W_TYPE_SIZE 32