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From: Pranav Kant <pranavk@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/google/grte/v5-2.27/master] math: x86: Use prefix for FP_INIT_ROUNDMODE Date: Tue, 14 Nov 2023 18:49:50 +0000 (GMT) [thread overview] Message-ID: <20231114184950.B84963858407@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=aacd7e0eb6429854f6133bea49c1c4938ff30608 commit aacd7e0eb6429854f6133bea49c1c4938ff30608 Author: Adhemerval Zanella <adhemerval.zanella@linaro.org> Date: Thu Mar 10 14:48:44 2022 -0300 math: x86: Use prefix for FP_INIT_ROUNDMODE 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. Diff: --- sysdeps/x86/fpu/sfp-machine.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/sysdeps/x86/fpu/sfp-machine.h b/sysdeps/x86/fpu/sfp-machine.h index fcbcf69053..f06e3c0ca1 100644 --- a/sysdeps/x86/fpu/sfp-machine.h +++ b/sysdeps/x86/fpu/sfp-machine.h @@ -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
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