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| author | David S. Miller <davem@davemloft.net> | 2012-05-31 14:19:30 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-31 14:19:30 -0700 |
| commit | f230c29b40cc36ce62387664be92c3cf94119efe (patch) | |
| tree | 26028666b279654830d54846e9194429accfd9f5 /sysdeps/sparc/sparc64/memset.S | |
| parent | fed806c3af7b6421e17ac50f8129dbe4fd693e4a (diff) | |
| download | glibc-f230c29b40cc36ce62387664be92c3cf94119efe.tar.gz glibc-f230c29b40cc36ce62387664be92c3cf94119efe.tar.xz glibc-f230c29b40cc36ce62387664be92c3cf94119efe.zip | |
Avoid performance penalty in sparc optimized memcpy/memset.
fmovd clears the current exception field in the %fsr, fsrc2 does not and therefore runs more efficiently on some cpus. * sysdeps/sparc/sparc64/memcpy.S: Use fsrc2 to move 64-bit values between float registers. * sysdeps/sparc/sparc64/memset.S: Likewise. * sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Likewise.
Diffstat (limited to 'sysdeps/sparc/sparc64/memset.S')
| -rw-r--r-- | sysdeps/sparc/sparc64/memset.S | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sysdeps/sparc/sparc64/memset.S b/sysdeps/sparc/sparc64/memset.S index b9c52aa9d2..5e92936682 100644 --- a/sysdeps/sparc/sparc64/memset.S +++ b/sysdeps/sparc/sparc64/memset.S @@ -109,16 +109,16 @@ ENTRY(memset) membar #StoreStore | #LoadStore andcc %o3, 0xc0, %g5 and %o2, 0x3f, %o2 - fmovd %f0, %f2 - fmovd %f0, %f4 + fsrc2 %f0, %f2 + fsrc2 %f0, %f4 andn %o3, 0xff, %o3 - fmovd %f0, %f6 + fsrc2 %f0, %f6 cmp %g5, 64 - fmovd %f0, %f8 - fmovd %f0, %f10 - fmovd %f0, %f12 + fsrc2 %f0, %f8 + fsrc2 %f0, %f10 + fsrc2 %f0, %f12 brz,pn %g5, 10f - fmovd %f0, %f14 + fsrc2 %f0, %f14 be,pn %icc, 2f stda %f0, [%o0 + 0x00] %asi cmp %g5, 128 |