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Simplify x86 strcmp-sse4 unwind info.

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H.J. Lu 2010-02-17 22:27:41 -08:00 committed by Ulrich Drepper
parent 82abe82ad7
commit 28be6098c3
2 changed files with 11 additions and 15 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2010-02-16 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/i386/i686/multiarch/strcmp-sse4.S: Simplify unwind info.
2010-02-17 H.J. Lu <hongjiu.lu@intel.com>
Ulrich Drepper <drepper@redhat.com>

22
sysdeps/i386/i686/multiarch/strcmp-sse4.S
View File

@ -40,6 +40,7 @@
# endif
# define STR1 4
# define STR2 STR1+4
# define RETURN ret; .p2align 4
#else
# ifndef STRCMP
# define STRCMP __strncmp_sse4_2
@ -47,6 +48,7 @@
# define STR1 8
# define STR2 STR1+4
# define CNT STR2+4
# define RETURN POP (%ebp); ret; .p2align 4; CFI_PUSH (%ebp)
#endif
.section .text.sse4.2,"ax",@progbits
@ -223,6 +225,7 @@ L(crosspage):
add $16, %esi
jmp L(check_offset)
.p2align 4
L(end):
jnc L(ret)
#ifdef USE_AS_STRNCMP
@ -242,6 +245,7 @@ L(ret):
#endif
ret
.p2align 4
cfi_restore_state
#ifdef USE_AS_STRNCMP
L(more16byteseq):
@ -251,27 +255,15 @@ L(more16byteseq):
#endif
L(eq):
xorl %eax, %eax
#ifdef USE_AS_STRNCMP
POP (%ebp)
#endif
ret
RETURN
#ifdef USE_AS_STRNCMP
CFI_PUSH (%ebp)
#endif
L(neq):
mov $1, %eax
ja L(neq_bigger)
neg %eax
L(neq_bigger):
#ifdef USE_AS_STRNCMP
POP (%ebp)
#endif
ret
.p2align 4
#ifdef USE_AS_STRNCMP
CFI_PUSH (%ebp)
#endif
RETURN
L(less16bytes):
add $0xfefefeff, %ecx
jnc L(less4bytes)