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| author | David S. Miller <davem@davemloft.net> | 2012-03-14 16:21:40 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-03-14 16:21:40 -0700 |
| commit | 7bd951ff59e0443ca1bdd5b0ea58f6f4f641ac73 (patch) | |
| tree | ff25a68a9fa2c41a54bc59d7291d48e3eef991b6 /sysdeps | |
| parent | bd951ccbe8597225d0f219425cf8e75d639185cd (diff) | |
| download | glibc-7bd951ff59e0443ca1bdd5b0ea58f6f4f641ac73.tar.gz glibc-7bd951ff59e0443ca1bdd5b0ea58f6f4f641ac73.tar.xz glibc-7bd951ff59e0443ca1bdd5b0ea58f6f4f641ac73.zip | |
Small optimization to sparc 64-bit copysign.
* sysdeps/sparc/sparc64/fpu/s_copysign.S (__copysign): Use fzeros/fnegs to load 0x80000000 into a float register instead of using the stack. * sysdeps/sparc/sparc64/fpu/s_copysignf.S (__copysignf): Likewise.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/sparc/sparc64/fpu/s_copysign.S | 5 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc64/fpu/s_copysignf.S | 5 |
2 files changed, 4 insertions, 6 deletions
diff --git a/sysdeps/sparc/sparc64/fpu/s_copysign.S b/sysdeps/sparc/sparc64/fpu/s_copysign.S index 571f57cbdc..f7f69fb8d9 100644 --- a/sysdeps/sparc/sparc64/fpu/s_copysign.S +++ b/sysdeps/sparc/sparc64/fpu/s_copysign.S @@ -20,9 +20,8 @@ #include <sysdep.h> ENTRY (__copysign) - sethi %hi(0x80000000), %g1 - st %g1, [%sp + STACK_BIAS + 128] - ld [%sp + STACK_BIAS + 128], %f7 + fzeros %f7 + fnegs %f7, %f7 fands %f2, %f7, %f9 fandnot2s %f0, %f7, %f0 retl diff --git a/sysdeps/sparc/sparc64/fpu/s_copysignf.S b/sysdeps/sparc/sparc64/fpu/s_copysignf.S index db6a384c60..85577a7170 100644 --- a/sysdeps/sparc/sparc64/fpu/s_copysignf.S +++ b/sysdeps/sparc/sparc64/fpu/s_copysignf.S @@ -20,9 +20,8 @@ #include <sysdep.h> ENTRY (__copysignf) - sethi %hi(0x80000000), %g1 - st %g1, [%sp + STACK_BIAS + 128] - ld [%sp + STACK_BIAS + 128], %f7 + fzeros %f7 + fnegs %f7, %f7 fands %f3, %f7, %f9 fandnot2s %f1, %f7, %f1 retl |