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PowerPC: Arithmetic function optimizations for POWER
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ChangeLog
11
ChangeLog
@ -1,3 +1,14 @@
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2011-11-07 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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* sysdeps/powerpc/fpu/math_private.h: Using inline assembly version
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of math functions ceil, trunc, floor, round, and sqrt, when
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avaliable on the platform.
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* sysdeps/powerpc/fpu/e_sqrt.c: Undefine __ieee754_sqrt to avoid
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name clash.
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* sysdeps/powerpc/fpu/e_sqrtf.c: Likewise.
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* sysdeps/powerpc/powerpc64/fpu/e_sqrt.c: Likewise.
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* sysdeps/powerpc/powerpc64/fpu/e_sqrtf.c: Likewise.
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2011-10-30 Marek Polacek <mpolacek@redhat.com>
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* libio/wfileops.c (_IO_wfile_underflow_mmap): Remove unused variable.
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@ -154,6 +154,7 @@ __slow_ieee754_sqrt (double x)
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return f_wash (x);
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}
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#undef __ieee754_sqrt
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double
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__ieee754_sqrt (double x)
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{
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@ -130,7 +130,7 @@ __slow_ieee754_sqrtf (float x)
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return f_washf (x);
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}
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#undef __ieee754_sqrtf
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float
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__ieee754_sqrtf (float x)
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{
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@ -1,5 +1,5 @@
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/* Private inline math functions for powerpc.
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Copyright (C) 2006
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Copyright (C) 2006, 2011
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@ -25,11 +25,144 @@
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#include <ldsodefs.h>
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#include <dl-procinfo.h>
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#include <math/math_private.h>
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# if __WORDSIZE == 64 || defined _ARCH_PWR4
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# define __CPU_HAS_FSQRT 1
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#ifndef __ieee754_sqrt
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# define __ieee754_sqrt(x) \
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({ double __z; \
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__asm __volatile ( \
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" fsqrt %0,%1\n" \
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: "=f" (__z) \
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: "f"(x)); \
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__z; })
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#endif
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#ifndef __ieee754_sqrtf
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# define __ieee754_sqrtf(x) \
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({ float __z; \
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__asm __volatile ( \
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" fsqrts %0,%1\n" \
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: "=f" (__z) \
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: "f"(x)); \
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__z; })
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#endif
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# else
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# define __CPU_HAS_FSQRT ((GLRO(dl_hwcap) & PPC_FEATURE_64) != 0)
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# endif // __WORDSIZE == 64 || defined _ARCH_PWR4
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#if defined _ARCH_PWR5X
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# ifndef __round
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# define __round(x) \
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({ double __z; \
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__asm __volatile ( \
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" frin %0,%1\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __roundf
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# define __roundf(x) \
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({ float __z; \
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__asm __volatile ( \
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" frin %0,%1\n" \
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" frsp %0,%0\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __trunc
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# define __trunc(x) \
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({ double __z; \
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__asm __volatile ( \
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" friz %0,%1\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __truncf
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# define __truncf(x) \
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({ float __z; \
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__asm __volatile ( \
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" friz %0,%1\n" \
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" frsp %0,%0\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __ceil
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# define __ceil(x) \
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({ double __z; \
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__asm __volatile ( \
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" frip %0,%1\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __ceilf
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# define __ceilf(x) \
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({ float __z; \
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__asm __volatile ( \
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" frip %0,%1\n" \
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" frsp %0,%0\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __floor
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# define __floor(x) \
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({ double __z; \
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__asm __volatile ( \
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" frim %0,%1\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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# ifndef __floorf
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# define __floorf(x) \
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({ float __z; \
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__asm __volatile ( \
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" frim %0,%1\n" \
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" frsp %0,%0\n" \
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: "=f" (__z) \
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: "f" (x)); \
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__z; })
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# endif
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#endif /* defined _ARCH_PWR5X */
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#if defined _ARCH_PWR6
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# ifndef __copysign
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# define __copysign(x, y) \
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({ double __z; \
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__asm __volatile ( \
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" fcpsgn %0,%1,%2\n" \
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: "=f" (__z) \
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: "f" (y), "f" (x)); \
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__z; })
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# endif
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# ifndef __copysignf
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# define __copysignf(x, y) \
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({ float __z; \
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__asm __volatile ( \
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" fcpsgn %0,%1,%2\n" \
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" frsp %0,%0\n" \
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: "=f" (__z) \
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: "f" (y), "f" (x)); \
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__z; })
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# endif
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#endif /* defined _ARCH_PWR6 */
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# ifndef __LIBC_INTERNAL_MATH_INLINES
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extern double __slow_ieee754_sqrt (double);
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@ -78,6 +211,4 @@ __ieee754_sqrtf (float __x)
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}
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#endif /* __LIBC_INTERNAL_MATH_INLINES */
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#include <math/math_private.h>
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#endif /* _PPC_MATH_PRIVATE_H_ */
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@ -20,6 +20,7 @@
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#include <math.h>
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#include <math_private.h>
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#undef __ieee754_sqrt
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double
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__ieee754_sqrt (double x)
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{
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#include <math.h>
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#include <math_private.h>
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#undef __ieee754_sqrtf
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float
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__ieee754_sqrtf (float x)
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{
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