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authorWill Schmidt <will_schmidt@vnet.ibm.com>2011-09-07 21:56:57 -0400
committerUlrich Drepper <drepper@gmail.com>2011-09-07 21:56:57 -0400
commit2270037782b05f2973372fe12f6e8d2a8c413188 (patch)
treecc3855afd057f3ce5d1b130461050b200619eede /sysdeps
parent5025581e1c66a184a587ab1bd99cd168e8fb7770 (diff)
downloadglibc-2270037782b05f2973372fe12f6e8d2a8c413188.tar.gz
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power7 strncmp optimization
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/powerpc/powerpc32/power7/strncmp.S4
-rw-r--r--sysdeps/powerpc/powerpc64/power7/strncmp.S4
2 files changed, 6 insertions, 2 deletions
diff --git a/sysdeps/powerpc/powerpc32/power7/strncmp.S b/sysdeps/powerpc/powerpc32/power7/strncmp.S
index 6a1422a7c8..bcd13b6fa6 100644
--- a/sysdeps/powerpc/powerpc32/power7/strncmp.S
+++ b/sysdeps/powerpc/powerpc32/power7/strncmp.S
@@ -27,7 +27,7 @@
 		     const char *s2 [r4],
 		     size_t size [r5])  */
 
-EALIGN (BP_SYM(strncmp),4,0)
+EALIGN (BP_SYM(strncmp),5,0)
 
 #define rTMP	r0
 #define rRTN	r3
@@ -47,9 +47,11 @@ EALIGN (BP_SYM(strncmp),4,0)
 #define rBITDIF	r11	/* bits that differ in s1 & s2 words */
 
 	dcbt	0,rSTR1
+	nop
 	or	rTMP,rSTR2,rSTR1
 	lis	r7F7F,0x7f7f
 	dcbt	0,rSTR2
+	nop
 	clrlwi.	rTMP,rTMP,30
 	cmplwi	cr1,rN,0
 	lis	rFEFE,-0x101
diff --git a/sysdeps/powerpc/powerpc64/power7/strncmp.S b/sysdeps/powerpc/powerpc64/power7/strncmp.S
index 498b19c71c..4c02b115ac 100644
--- a/sysdeps/powerpc/powerpc64/power7/strncmp.S
+++ b/sysdeps/powerpc/powerpc64/power7/strncmp.S
@@ -27,7 +27,7 @@
 		     const char *s2 [r4],
 		     size_t size [r5])  */
 
-EALIGN (BP_SYM(strncmp),4,0)
+EALIGN (BP_SYM(strncmp),5,0)
 	CALL_MCOUNT 3
 
 #define rTMP	r0
@@ -48,9 +48,11 @@ EALIGN (BP_SYM(strncmp),4,0)
 #define rBITDIF	r11	/* bits that differ in s1 & s2 words */
 
 	dcbt	0,rSTR1
+	nop
 	or	rTMP,rSTR2,rSTR1
 	lis	r7F7F,0x7f7f
 	dcbt	0,rSTR2
+	nop
 	clrldi.	rTMP,rTMP,61
 	cmpldi	cr1,rN,0
 	lis	rFEFE,-0x101