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powerpc: Refactor fenvinline.h

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This patch refactor fenviline.h replaces some statements for
builtins.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
This commit is contained in:
Rogerio Alves 2020-02-10 12:09:02 -03:00 committed by Tulio Magno Quites Machado Filho
parent d423e17031
commit f1a0840c15
1 changed files with 19 additions and 13 deletions
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32
sysdeps/powerpc/bits/fenvinline.h
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@ -51,25 +51,34 @@
# define fegetround() __fegetround ()
# ifndef __NO_MATH_INLINES
/* Builtins to mtfsb0 and mtfsb1 was introduced on GCC 9. */
# if !__GNUC_PREREQ(9, 0)
/* The weird 'i#*X' constraints on the following suppress a gcc
warning when __excepts is not a constant. Otherwise, they mean the
same as just plain 'i'. */
same as just plain 'i'. This warning only happens in old GCC
versions (gcc 3 or less). Otherwise plain 'i' works fine. */
# define __MTFSB0(__b) __asm__ __volatile__ ("mtfsb0 %0" : : "i#*X" (__b))
# define __MTFSB1(__b) __asm__ __volatile__ ("mtfsb1 %0" : : "i#*X" (__b))
# else
# define __MTFSB0(__b) __builtin_mtfsb0 (__b)
# define __MTFSB1(__b) __builtin_mtfsb1 (__b)
# endif
# if __GNUC_PREREQ(3, 4)
#include <sys/param.h>
/* Inline definition for feraiseexcept. */
# define feraiseexcept(__excepts) \
(__extension__ ({ \
int __e = __excepts; \
int __ret; \
int __ret = 0; \
if (__builtin_constant_p (__e) \
&& (__e & (__e - 1)) == 0 \
&& powerof2 (__e) \
&& __e != FE_INVALID) \
{ \
if (__e != 0) \
__asm__ __volatile__ ("mtfsb1 %0" \
: : "i#*X" (__builtin_clz (__e))); \
__ret = 0; \
__MTFSB1 ((__builtin_clz (__e))); \
} \
else \
__ret = feraiseexcept (__e); \
@ -80,15 +89,12 @@
# define feclearexcept(__excepts) \
(__extension__ ({ \
int __e = __excepts; \
int __ret; \
int __ret = 0; \
if (__builtin_constant_p (__e) \
&& (__e & (__e - 1)) == 0 \
&& powerof2 (__e) \
&& __e != FE_INVALID) \
{ \
if (__e != 0) \
__asm__ __volatile__ ("mtfsb0 %0" \
: : "i#*X" (__builtin_clz (__e))); \
__ret = 0; \
__MTFSB0 ((__builtin_clz (__e))); \
} \
else \
__ret = feclearexcept (__e); \