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Check __SSE_MATH__ in x86_64 feraiseexcept

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H.J. Lu 2012-06-06 10:11:14 -07:00
parent 6e230d1183
commit a728a38fb6
2 changed files with 17 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2012-06-06 H.J. Lu <hongjiu.lu@intel.com>
[BZ #14117]
* sysdeps/x86_64/fpu/bits/fenv.h (feraiseexcept): Check
__SSE_MATH__.
2012-06-06 Siddhesh Poyarekar <siddhesh@redhat.com>
[BZ #14134]

12
sysdeps/x86_64/fpu/bits/fenv.h
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@ -1,4 +1,4 @@
/* Copyright (C) 1997-2001,2004,2011,2012 Free Software Foundation, Inc.
/* Copyright (C) 1997-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -109,7 +109,12 @@ __NTH (feraiseexcept (int __excepts))
/* One example of a invalid operation is 0.0 / 0.0. */
float __f = 0.0;
# ifdef __SSE_MATH__
__asm__ __volatile__ ("divss %0, %0 " : : "x" (__f));
# else
__asm__ __volatile__ ("fdiv %%st, %%st(0); fwait"
: "=t" (__f) : "0" (__f));
# endif
(void) &__f;
}
if ((FE_DIVBYZERO & __excepts) != 0)
@ -117,7 +122,12 @@ __NTH (feraiseexcept (int __excepts))
float __f = 1.0;
float __g = 0.0;
# ifdef __SSE_MATH__
__asm__ __volatile__ ("divss %1, %0" : : "x" (__f), "x" (__g));
# else
__asm__ __volatile__ ("fdivp %%st, %%st(1); fwait"
: "=t" (__f) : "0" (__f), "u" (__g) : "st(1)");
# endif
(void) &__f;
}