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Work around mtfsb0 syntax limitation with clang

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This commit is contained in:
Stan Shebs 2018-09-26 14:44:39 -07:00 committed by Fangrui Song
parent e04e10b431
commit 960ba7975c
2 changed files with 16 additions and 0 deletions
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8
sysdeps/powerpc/powerpc64/fpu/s_nearbyint.S
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@ -42,7 +42,11 @@ ENTRY (__nearbyint, 4)
fcmpu cr7,fp1,fp12 /* if (x > 0.0) */
ble cr7, L(lessthanzero)
mffs fp11
#if defined __clang__
mtfsb0 31 /* Disable FE_INEXACT exception */
#else
mtfsb0 4*cr7+lt /* Disable FE_INEXACT exception */
#endif
fadd fp1,fp1,fp13 /* x+= TWO52 */
fsub fp1,fp1,fp13 /* x-= TWO52 */
fabs fp1,fp1 /* if (x == 0.0) */
@ -51,7 +55,11 @@ ENTRY (__nearbyint, 4)
L(lessthanzero):
bgelr cr7 /* if (x < 0.0) */
mffs fp11
#if defined __clang__
mtfsb0 31
#else
mtfsb0 4*cr7+lt
#endif
fsub fp1,fp1,fp13 /* x -= TWO52 */
fadd fp1,fp1,fp13 /* x += TWO52 */
fnabs fp1,fp1 /* if (x == 0.0) */

8
sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S
View File

@ -43,7 +43,11 @@ ENTRY (__nearbyintf, 4)
fcmpu cr7,fp1,fp12 /* if (x > 0.0) */
ble cr7, L(lessthanzero)
mffs fp11
#if defined __clang__
mtfsb0 31 /* Disable FE_INEXACT exception */
#else
mtfsb0 4*cr7+lt /* Disable FE_INEXACT exception */
#endif
fadds fp1,fp1,fp13 /* x += TWO23 */
fsubs fp1,fp1,fp13 /* x -= TWO23 */
fabs fp1,fp1 /* if (x == 0.0) */
@ -52,7 +56,11 @@ ENTRY (__nearbyintf, 4)
L(lessthanzero):
bgelr cr7 /* if (x < 0.0) */
mffs fp11
#if defined __clang__
mtfsb0 31 /* Disable FE_INEXACT exception */
#else
mtfsb0 4*cr7+lt /* Disable FE_INEXACT exception */
#endif
fsubs fp1,fp1,fp13 /* x -= TWO23 */
fadds fp1,fp1,fp13 /* x += TWO23 */
fnabs fp1,fp1 /* if (x == 0.0) */