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[Commits] r16895 - in /fsf/trunk/libc: ChangeLog sysdeps/x86_64/fpu/bits/mathinline.h
- To: commits@xxxxxxxxxx
- Subject: [Commits] r16895 - in /fsf/trunk/libc: ChangeLog sysdeps/x86_64/fpu/bits/mathinline.h
- From: eglibc@xxxxxxxxxx
- Date: Mon, 30 Jan 2012 00:01:34 -0000
Author: eglibc
Date: Mon Jan 30 00:01:33 2012
New Revision: 16895
Log:
Import glibc-mainline for 2012-01-30
Modified:
fsf/trunk/libc/ChangeLog
fsf/trunk/libc/sysdeps/x86_64/fpu/bits/mathinline.h
Modified: fsf/trunk/libc/ChangeLog
==============================================================================
--- fsf/trunk/libc/ChangeLog (original)
+++ fsf/trunk/libc/ChangeLog Mon Jan 30 00:01:33 2012
@@ -1,4 +1,11 @@
2012-01-28 Ulrich Drepper <drepper@xxxxxxxxx>
+
+ * sysdeps/x86_64/fpu/bits/mathinline.h (__signbitl): Optimize a bit.
+ Avoid unnecessary __WORDSIZE == 64 test.
+ (fmaxf): Use VEX format if possible.
+ (fmax): Likewise.
+ (fminf): Likewise.
+ (fmin): Likewise.
* config.h.in: Define HAVE_SSE2AVX_SUPPORT.
* math/math_private.h: Remove libc_fegetround* and
Modified: fsf/trunk/libc/sysdeps/x86_64/fpu/bits/mathinline.h
==============================================================================
--- fsf/trunk/libc/sysdeps/x86_64/fpu/bits/mathinline.h (original)
+++ fsf/trunk/libc/sysdeps/x86_64/fpu/bits/mathinline.h Mon Jan 30 00:01:33 2012
@@ -1,5 +1,5 @@
/* Inline math functions for x86-64.
- Copyright (C) 2002-2004, 2007, 2009, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2002-2004,2007,2009,2011,2012 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
@@ -64,21 +64,20 @@
__NTH (__signbitl (long double __x))
{
__extension__ union { long double __l; int __i[3]; } __u = { __l: __x };
- return (__u.__i[2] & 0x8000) != 0;
-}
-
-__END_NAMESPACE_C99
-#endif
-
-
-#if (__GNUC_PREREQ (2, 8) && !defined __NO_MATH_INLINES \
- && defined __OPTIMIZE__)
+ return __u.__i[2] & 0x8000;
+}
+
+__END_NAMESPACE_C99
+#endif
+
+
+#if __GNUC_PREREQ (2, 8) && !defined __NO_MATH_INLINES && defined __OPTIMIZE__
# ifdef __USE_ISOC99
__BEGIN_NAMESPACE_C99
/* Round to nearest integer. */
-# if __WORDSIZE == 64 || defined __SSE_MATH__
+# ifdef __SSE_MATH__
__MATH_INLINE long int
__NTH (lrintf (float __x))
{
@@ -87,7 +86,7 @@
return __res;
}
# endif
-# if __WORDSIZE == 64 || defined __SSE2_MATH__
+# ifdef __SSE2_MATH__
__MATH_INLINE long int
__NTH (lrint (double __x))
{
@@ -114,40 +113,64 @@
# endif
# if defined __FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0 \
- && (__WORDSIZE == 64 || defined __SSE2_MATH__)
+ && defined __SSE2_MATH__
/* Determine maximum of two values. */
__MATH_INLINE float
__NTH (fmaxf (float __x, float __y))
{
+# ifdef __AVX__
+ float __res;
+ __asm ("vmaxss %2, %1, %0" : "=x" (__res) : "x" (x), "xm" (__y));
+ return __res;
+# else
__asm ("maxss %1, %0" : "+x" (__x) : "xm" (__y));
return __x;
+# endif
}
__MATH_INLINE double
__NTH (fmax (double __x, double __y))
{
+# ifdef __AVX__
+ float __res;
+ __asm ("vmaxsd %2, %1, %0" : "=x" (__res) : "x" (x), "xm" (__y));
+ return __res;
+# else
__asm ("maxsd %1, %0" : "+x" (__x) : "xm" (__y));
return __x;
+# endif
}
/* Determine minimum of two values. */
__MATH_INLINE float
__NTH (fminf (float __x, float __y))
{
+# ifdef __AVX__
+ float __res;
+ __asm ("vminss %2, %1, %0" : "=x" (__res) : "x" (x), "xm" (__y));
+ return __res;
+# else
__asm ("minss %1, %0" : "+x" (__x) : "xm" (__y));
return __x;
+# endif
}
__MATH_INLINE double
__NTH (fmin (double __x, double __y))
{
+# ifdef __AVX__
+ float __res;
+ __asm ("vminsd %2, %1, %0" : "=x" (__res) : "x" (x), "xm" (__y));
+ return __res;
+# else
__asm ("minsd %1, %0" : "+x" (__x) : "xm" (__y));
return __x;
-}
-# endif
-
-__END_NAMESPACE_C99
-# endif
-
-# if defined __SSE4_1__ && (__WORDSIZE == 64 || defined __SSE2_MATH__)
+# endif
+}
+# endif
+
+__END_NAMESPACE_C99
+# endif
+
+# if defined __SSE4_1__ && defined __SSE2_MATH__
# if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
__BEGIN_NAMESPACE_C99
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