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-rw-r--r--sysdeps/powerpc/powerpc64/power9/strcmp.S30
1 files changed, 8 insertions, 22 deletions
diff --git a/sysdeps/powerpc/powerpc64/power9/strcmp.S b/sysdeps/powerpc/powerpc64/power9/strcmp.S
index 3e32396c94..17ec8c24c3 100644
--- a/sysdeps/powerpc/powerpc64/power9/strcmp.S
+++ b/sysdeps/powerpc/powerpc64/power9/strcmp.S
@@ -65,21 +65,21 @@
EALIGN (strcmp, 4, 0)
li r0, 0
- /* Check if [s1]+32 or [s2]+32 will cross a 4K page boundary using
+ /* Check if [s1]+16 or [s2]+16 will cross a 4K page boundary using
the code:
(((size_t) s1) % PAGE_SIZE > (PAGE_SIZE - ITER_SIZE))
- with PAGE_SIZE being 4096 and ITER_SIZE begin 32. */
+ with PAGE_SIZE being 4096 and ITER_SIZE begin 16. */
rldicl r7, r3, 0, 52
rldicl r9, r4, 0, 52
- cmpldi cr7, r7, 4096-32
+ cmpldi cr7, r7, 4096-16
bgt cr7, L(pagecross_check)
- cmpldi cr5, r9, 4096-32
+ cmpldi cr5, r9, 4096-16
bgt cr5, L(pagecross_check)
- /* For short strings up to 32 bytes, load both s1 and s2 using
+ /* For short strings up to 16 bytes, load both s1 and s2 using
unaligned dwords and compare. */
ld r8, 0(r3)
ld r10, 0(r4)
@@ -95,25 +95,11 @@ EALIGN (strcmp, 4, 0)
orc. r9, r12, r11
bne cr0, L(different_nocmpb)
- ld r8, 16(r3)
- ld r10, 16(r4)
- cmpb r12, r8, r0
- cmpb r11, r8, r10
- orc. r9, r12, r11
- bne cr0, L(different_nocmpb)
-
- ld r8, 24(r3)
- ld r10, 24(r4)
- cmpb r12, r8, r0
- cmpb r11, r8, r10
- orc. r9, r12, r11
- bne cr0, L(different_nocmpb)
-
- addi r7, r3, 32
- addi r4, r4, 32
+ addi r7, r3, 16
+ addi r4, r4, 16
L(align):
- /* Now it has checked for first 32 bytes. */
+ /* Now it has checked for first 16 bytes. */
vspltisb v0, 0
vspltisb v2, -1
lvsr v6, 0, r4 /* Compute mask. */