diff options
| author | Denis Vlasenko <vda.linux@googlemail.com> | 2008-04-15 08:23:19 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2008-04-15 08:23:19 +0000 |
| commit | 534dfb536f19737f2642ee56dd67a97c5db6a74e (patch) | |
| tree | faf1e08295d084cb44c8986fa179d306d6f0a377 /libc/string/x86_64/memset.S | |
| parent | 07bbf922670cce83c0b54f28ad43473d044cae5e (diff) | |
amd64 string ops: replace some instructions by smaller ones,
e.g. testb $0xff, %cl -> testb %cl, %cl
Diffstat (limited to 'libc/string/x86_64/memset.S')
| -rw-r--r-- | libc/string/x86_64/memset.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/libc/string/x86_64/memset.S b/libc/string/x86_64/memset.S index 0f054ade6..3092e81eb 100644 --- a/libc/string/x86_64/memset.S +++ b/libc/string/x86_64/memset.S @@ -53,15 +53,15 @@ ENTRY (memset) imul %rax,%r8 #endif test $0x7,%edi /* Check for alignment. */ - je 2f + jz 2f .p2align 4 1: /* Align ptr to 8 byte. */ mov %sil,(%rcx) dec %rdx inc %rcx - test $0x7,%ecx - jne 1b + test $0x7,%cl + jnz 1b 2: /* Check for really large regions. */ mov %rdx,%rax @@ -107,7 +107,7 @@ ENTRY (memset) jne 8b 9: #if BZERO_P - nop /* huh?? */ + /* nothing */ #else /* Load result (only if used as memset). */ mov %rdi,%rax /* start address of destination is result */ |