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Fix issues in x86 memset-sse2.S/memset-sse2-rep.S

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H.J. Lu 2010-02-24 18:11:35 -08:00 committed by Ulrich Drepper
parent 7ca890b88e
commit cc50f1a4b4
3 changed files with 33 additions and 15 deletions
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15
ChangeLog
View File

@ -1,3 +1,18 @@
2010-02-24 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/i386/i686/multiarch/memset-sse2-rep.S: Remove redundant
punpcklbw.
Use unsigned conditional jumps.
(128bytesormore_nt): Renamed to ...
(128bytesormore_endof_L1): This.
Use add instead of lea if possible.
Correct unwind info.
* sysdeps/i386/i686/multiarch/memset-sse2.S: Remove redundant
punpcklbw.
Use unsigned conditional jumps.
Use add instead of lea if possible.
Correct unwind info.
2010-02-24 Ulrich Drepper <drepper@redhat.com>
[BZ #11319]

14
sysdeps/i386/i686/multiarch/memset-sse2-rep.S
View File

@ -243,7 +243,6 @@ L(32bytesormore):
pxor %xmm0, %xmm0
#else
movd %eax, %xmm0
punpcklbw %xmm0, %xmm0
pshufd $0, %xmm0, %xmm0
#endif
testl $0xf, %edx
@ -261,7 +260,7 @@ L(not_aligned_16):
ALIGN (4)
L(aligned_16):
cmp $128, %ecx
jge L(128bytesormore)
jae L(128bytesormore)
L(aligned_16_less128bytes):
BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
@ -293,7 +292,7 @@ L(128bytesormore):
* fast string will prefetch and combine data efficiently.
*/
cmp %edi, %ecx
jae L(128bytesormore_nt)
jae L(128bytesormore_endof_L1)
subl $128, %ecx
L(128bytesormore_normal):
sub $128, %ecx
@ -306,7 +305,7 @@ L(128bytesormore_normal):
movdqa %xmm0, 0x60(%edx)
movdqa %xmm0, 0x70(%edx)
lea 128(%edx), %edx
jl L(128bytesless_normal)
jb L(128bytesless_normal)
sub $128, %ecx
@ -319,15 +318,16 @@ L(128bytesormore_normal):
movdqa %xmm0, 0x60(%edx)
movdqa %xmm0, 0x70(%edx)
lea 128(%edx), %edx
jge L(128bytesormore_normal)
jae L(128bytesormore_normal)
L(128bytesless_normal):
POP (%edi)
lea 128(%ecx), %ecx
add $128, %ecx
BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
CFI_PUSH (%edi)
ALIGN (4)
L(128bytesormore_nt):
L(128bytesormore_endof_L1):
mov %edx, %edi
mov %ecx, %edx
shr $2, %ecx

19
sysdeps/i386/i686/multiarch/memset-sse2.S
View File

@ -243,7 +243,6 @@ L(32bytesormore):
pxor %xmm0, %xmm0
#else
movd %eax, %xmm0
punpcklbw %xmm0, %xmm0
pshufd $0, %xmm0, %xmm0
#endif
testl $0xf, %edx
@ -261,7 +260,7 @@ L(not_aligned_16):
ALIGN (4)
L(aligned_16):
cmp $128, %ecx
jge L(128bytesormore)
jae L(128bytesormore)
L(aligned_16_less128bytes):
BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
@ -287,14 +286,17 @@ L(128bytesormore):
#ifdef DATA_CACHE_SIZE
POP (%ebx)
# define RESTORE_EBX_STATE CFI_PUSH (%ebx)
cmp $DATA_CACHE_SIZE, %ecx
#else
# ifdef SHARED
# define RESTORE_EBX_STATE
call __i686.get_pc_thunk.bx
add $_GLOBAL_OFFSET_TABLE_, %ebx
cmp __x86_data_cache_size@GOTOFF(%ebx), %ecx
# else
POP (%ebx)
# define RESTORE_EBX_STATE CFI_PUSH (%ebx)
cmp __x86_data_cache_size, %ecx
# endif
#endif
@ -312,7 +314,7 @@ L(128bytesormore_normal):
movdqa %xmm0, 0x60(%edx)
movdqa %xmm0, 0x70(%edx)
lea 128(%edx), %edx
jl L(128bytesless_normal)
jb L(128bytesless_normal)
sub $128, %ecx
@ -325,10 +327,10 @@ L(128bytesormore_normal):
movdqa %xmm0, 0x60(%edx)
movdqa %xmm0, 0x70(%edx)
lea 128(%edx), %edx
jge L(128bytesormore_normal)
jae L(128bytesormore_normal)
L(128bytesless_normal):
lea 128(%ecx), %ecx
add $128, %ecx
BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
ALIGN (4)
@ -346,11 +348,12 @@ L(128bytes_L2_normal):
movaps %xmm0, 0x70(%edx)
add $128, %edx
cmp $128, %ecx
jge L(128bytes_L2_normal)
jae L(128bytes_L2_normal)
L(128bytesless_L2_normal):
BRANCH_TO_JMPTBL_ENTRY (L(table_16_128bytes))
RESTORE_EBX_STATE
L(128bytesormore_nt_start):
sub %ebx, %ecx
ALIGN (4)
@ -368,7 +371,7 @@ L(128bytesormore_shared_cache_loop):
movdqa %xmm0, 0x70(%edx)
add $0x80, %edx
cmp $0x80, %ebx
jge L(128bytesormore_shared_cache_loop)
jae L(128bytesormore_shared_cache_loop)
cmp $0x80, %ecx
jb L(shared_cache_loop_end)
ALIGN (4)
@ -384,7 +387,7 @@ L(128bytesormore_nt):
movntdq %xmm0, 0x70(%edx)
add $0x80, %edx
cmp $0x80, %ecx
jge L(128bytesormore_nt)
jae L(128bytesormore_nt)
sfence
L(shared_cache_loop_end):
#if defined DATA_CACHE_SIZE || !defined SHARED