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Align x86 memcmp-sse4.S and fix unwind info.

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H.J. Lu 2010-02-17 23:01:55 -08:00 committed by Ulrich Drepper
parent c60bce2cdd
commit 020ecba7fc
2 changed files with 26 additions and 7 deletions
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3
ChangeLog
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@ -1,5 +1,8 @@
2010-02-16 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/i386/i686/multiarch/memcmp-sse4.S: Add alignnments.
Fix one unwind info problem.
* sysdeps/i386/i686/multiarch/memcmp-ssse3.S (less1bytes): Add CFI_POP.
* sysdeps/i386/i686/multiarch/strcmp-sse4.S: Simplify unwind info.

30
sysdeps/i386/i686/multiarch/memcmp-sse4.S
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@ -96,8 +96,9 @@ ENTRY (MEMCMP)
add %ecx, %edx
add %ecx, %eax
BRANCH_TO_JMPTBL_ENTRY(L(table_64bytes), %ecx, 4)
L(less8bytes):
ALIGN (4)
L(less8bytes):
mov (%eax), %bl
cmpb (%edx), %bl
jne L(nonzero)
@ -154,7 +155,6 @@ L(0bytes):
POP (%ebx)
xor %eax, %eax
ret
CFI_PUSH (%ebx)
ALIGN (4)
L(less1bytes):
@ -207,6 +207,8 @@ L(64bytesormore_loop):
add %ecx, %edx
add %ecx, %eax
BRANCH_TO_JMPTBL_ENTRY(L(table_64bytes), %ecx, 4)
ALIGN (4)
L(find_16diff):
sub $16, %ecx
L(find_32diff):
@ -217,8 +219,8 @@ L(find_64diff):
add %ecx, %edx
add %ecx, %eax
jmp L(16bytes)
ALIGN (4)
ALIGN (4)
L(16bytes):
mov -16(%eax), %ecx
mov -16(%edx), %ebx
@ -377,7 +379,7 @@ L(1bytes):
jne L(end)
RETURN
ALIGN (4)
L(52bytes):
movdqu -52(%eax), %xmm1
movdqu -52(%edx), %xmm2
@ -406,6 +408,7 @@ L(20bytes):
jne L(find_diff)
RETURN
ALIGN (4)
L(53bytes):
movdqu -53(%eax), %xmm1
movdqu -53(%edx), %xmm2
@ -437,6 +440,7 @@ L(21bytes):
jne L(end)
RETURN
ALIGN (4)
L(54bytes):
movdqu -54(%eax), %xmm1
movdqu -54(%edx), %xmm2
@ -472,6 +476,7 @@ L(22bytes):
jne L(end)
RETURN
ALIGN (4)
L(55bytes):
movdqu -55(%eax), %xmm1
movdqu -55(%edx), %xmm2
@ -509,6 +514,7 @@ L(23bytes):
jne L(end)
RETURN
ALIGN (4)
L(56bytes):
movdqu -56(%eax), %xmm1
movdqu -56(%edx), %xmm2
@ -543,6 +549,7 @@ L(24bytes):
jne L(find_diff)
RETURN
ALIGN (4)
L(57bytes):
movdqu -57(%eax), %xmm1
movdqu -57(%edx), %xmm2
@ -578,6 +585,7 @@ L(25bytes):
jne L(end)
RETURN
ALIGN (4)
L(58bytes):
movdqu -58(%eax), %xmm1
movdqu -58(%edx), %xmm2
@ -619,6 +627,7 @@ L(26bytes):
jne L(end)
RETURN
ALIGN (4)
L(59bytes):
movdqu -59(%eax), %xmm1
movdqu -59(%edx), %xmm2
@ -660,6 +669,7 @@ L(27bytes):
jne L(end)
RETURN
ALIGN (4)
L(60bytes):
movdqu -60(%eax), %xmm1
movdqu -60(%edx), %xmm2
@ -696,6 +706,7 @@ L(28bytes):
jne L(find_diff)
RETURN
ALIGN (4)
L(61bytes):
movdqu -61(%eax), %xmm1
movdqu -61(%edx), %xmm2
@ -738,6 +749,7 @@ L(29bytes):
jne L(end)
RETURN
ALIGN (4)
L(62bytes):
movdqu -62(%eax), %xmm1
movdqu -62(%edx), %xmm2
@ -780,6 +792,7 @@ L(30bytes):
jne L(end)
RETURN
ALIGN (4)
L(63bytes):
movdqu -63(%eax), %xmm1
movdqu -63(%edx), %xmm2
@ -826,6 +839,7 @@ L(31bytes):
jne L(end)
RETURN
ALIGN (4)
L(64bytes):
movdqu -64(%eax), %xmm1
movdqu -64(%edx), %xmm2
@ -870,6 +884,7 @@ L(32bytes):
jne L(find_diff)
RETURN
ALIGN (4)
L(less16bytes):
add %ebx, %eax
add %ebx, %edx
@ -914,8 +929,11 @@ L(end):
neg %eax
L(bigger):
ret
END (MEMCMP)
.section .rodata.sse4.2,"a",@progbits
ALIGN (2)
.type L(table_64bytes), @object
L(table_64bytes):
.int JMPTBL (L(0bytes), L(table_64bytes))
.int JMPTBL (L(1bytes), L(table_64bytes))
@ -982,7 +1000,5 @@ L(table_64bytes):
.int JMPTBL (L(62bytes), L(table_64bytes))
.int JMPTBL (L(63bytes), L(table_64bytes))
.int JMPTBL (L(64bytes), L(table_64bytes))
END (MEMCMP)
.size L(table_64bytes), .-L(table_64bytes)
#endif