From: H.J. Lu <hjl.tools@gmail.com>
Date: Mon, 14 May 2018 10:41:22 +0000 (-0700)
Subject: x86-64: Remove the unnecessary testl in strlen-avx2.S
X-Git-Tag: glibc-2.28~282
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e322ec3282648e9f05265d4636719ded754a1c3c;p=thirdparty%2Fglibc.git

x86-64: Remove the unnecessary testl in strlen-avx2.S

Since the result of testl is never used, this patch removes it.

Tested on 64-bit AVX2 machine.

	* sysdeps/x86_64/multiarch/strlen-avx2.S (STRLEN): Remove the
	unnecessary testl.
---

diff --git a/ChangeLog b/ChangeLog
index 909dd905243..257261fbf82 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2018-05-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* sysdeps/x86_64/multiarch/strlen-avx2.S (STRLEN): Remove the
+	unnecessary testl.
+
 2018-05-13  Alan Modra  <amodra@gmail.com>
 
 	* sysdeps/hppa/dl-machine.h (elf_machine_rela): Add
diff --git a/sysdeps/x86_64/multiarch/strlen-avx2.S b/sysdeps/x86_64/multiarch/strlen-avx2.S
index 85d7259746b..fb2418cddc1 100644
--- a/sysdeps/x86_64/multiarch/strlen-avx2.S
+++ b/sysdeps/x86_64/multiarch/strlen-avx2.S
@@ -378,7 +378,6 @@ L(4x_vec_end):
 	jnz	L(first_vec_x2)
 	VPCMPEQ %ymm4, %ymm0, %ymm4
 	vpmovmskb %ymm4, %eax
-	testl	%eax, %eax
 L(first_vec_x3):
 	tzcntl	%eax, %eax
 	addq	$(VEC_SIZE * 3), %rax