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PowerPC: Arithmetic function optimizations for POWER

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Adhemerval Zanella 2011-11-11 13:33:38 -05:00 committed by Ulrich Drepper
parent 1d8f7ddc04
commit 8a6d525522
6 changed files with 149 additions and 4 deletions
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11
ChangeLog
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@ -1,3 +1,14 @@
2011-11-07 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
* sysdeps/powerpc/fpu/math_private.h: Using inline assembly version
of math functions ceil, trunc, floor, round, and sqrt, when
avaliable on the platform.
* sysdeps/powerpc/fpu/e_sqrt.c: Undefine __ieee754_sqrt to avoid
name clash.
* sysdeps/powerpc/fpu/e_sqrtf.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/e_sqrt.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/e_sqrtf.c: Likewise.
2011-10-30 Marek Polacek <mpolacek@redhat.com>
* libio/wfileops.c (_IO_wfile_underflow_mmap): Remove unused variable.

1
sysdeps/powerpc/fpu/e_sqrt.c
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@ -154,6 +154,7 @@ __slow_ieee754_sqrt (double x)
return f_wash (x);
}
#undef __ieee754_sqrt
double
__ieee754_sqrt (double x)
{

2
sysdeps/powerpc/fpu/e_sqrtf.c
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@ -130,7 +130,7 @@ __slow_ieee754_sqrtf (float x)
return f_washf (x);
}
#undef __ieee754_sqrtf
float
__ieee754_sqrtf (float x)
{

137
sysdeps/powerpc/fpu/math_private.h
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@ -1,5 +1,5 @@
/* Private inline math functions for powerpc.
Copyright (C) 2006
Copyright (C) 2006, 2011
Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -25,11 +25,144 @@
#include <ldsodefs.h>
#include <dl-procinfo.h>
#include <math/math_private.h>
# if __WORDSIZE == 64 || defined _ARCH_PWR4
# define __CPU_HAS_FSQRT 1
#ifndef __ieee754_sqrt
# define __ieee754_sqrt(x) \
({ double __z; \
__asm __volatile ( \
" fsqrt %0,%1\n" \
: "=f" (__z) \
: "f"(x)); \
__z; })
#endif
#ifndef __ieee754_sqrtf
# define __ieee754_sqrtf(x) \
({ float __z; \
__asm __volatile ( \
" fsqrts %0,%1\n" \
: "=f" (__z) \
: "f"(x)); \
__z; })
#endif
# else
# define __CPU_HAS_FSQRT ((GLRO(dl_hwcap) & PPC_FEATURE_64) != 0)
# endif // __WORDSIZE == 64 || defined _ARCH_PWR4
#if defined _ARCH_PWR5X
# ifndef __round
# define __round(x) \
({ double __z; \
__asm __volatile ( \
" frin %0,%1\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __roundf
# define __roundf(x) \
({ float __z; \
__asm __volatile ( \
" frin %0,%1\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __trunc
# define __trunc(x) \
({ double __z; \
__asm __volatile ( \
" friz %0,%1\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __truncf
# define __truncf(x) \
({ float __z; \
__asm __volatile ( \
" friz %0,%1\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __ceil
# define __ceil(x) \
({ double __z; \
__asm __volatile ( \
" frip %0,%1\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __ceilf
# define __ceilf(x) \
({ float __z; \
__asm __volatile ( \
" frip %0,%1\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __floor
# define __floor(x) \
({ double __z; \
__asm __volatile ( \
" frim %0,%1\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __floorf
# define __floorf(x) \
({ float __z; \
__asm __volatile ( \
" frim %0,%1\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
#endif /* defined _ARCH_PWR5X */
#if defined _ARCH_PWR6
# ifndef __copysign
# define __copysign(x, y) \
({ double __z; \
__asm __volatile ( \
" fcpsgn %0,%1,%2\n" \
: "=f" (__z) \
: "f" (y), "f" (x)); \
__z; })
# endif
# ifndef __copysignf
# define __copysignf(x, y) \
({ float __z; \
__asm __volatile ( \
" fcpsgn %0,%1,%2\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (y), "f" (x)); \
__z; })
# endif
#endif /* defined _ARCH_PWR6 */
# ifndef __LIBC_INTERNAL_MATH_INLINES
extern double __slow_ieee754_sqrt (double);
@ -78,6 +211,4 @@ __ieee754_sqrtf (float __x)
}
#endif /* __LIBC_INTERNAL_MATH_INLINES */
#include <math/math_private.h>
#endif /* _PPC_MATH_PRIVATE_H_ */

1
sysdeps/powerpc/powerpc64/fpu/e_sqrt.c
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@ -20,6 +20,7 @@
#include <math.h>
#include <math_private.h>
#undef __ieee754_sqrt
double
__ieee754_sqrt (double x)
{

1
sysdeps/powerpc/powerpc64/fpu/e_sqrtf.c
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@ -20,6 +20,7 @@
#include <math.h>
#include <math_private.h>
#undef __ieee754_sqrtf
float
__ieee754_sqrtf (float x)
{