From: Stan Shebs <stanshebs@google.com>
Date: Wed, 7 Feb 2018 20:54:57 +0000 (-0800)
Subject: Work around clang assembler error with movzx
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a7215f0eaaf6ad015da747f632d177a03121a3b;p=thirdparty%2Fglibc.git

Work around clang assembler error with movzx
---

diff --git a/sysdeps/x86_64/strcmp.S b/sysdeps/x86_64/strcmp.S
index de54fce6471..f8a5f854d23 100644
--- a/sysdeps/x86_64/strcmp.S
+++ b/sysdeps/x86_64/strcmp.S
@@ -2232,8 +2232,9 @@ LABEL(strcmp_exitz):
 
 	.p2align 4
 LABEL(Byte0):
-	movzx	(%rsi), %ecx
-	movzx	(%rdi), %eax
+	# Clang assembler objects to movzx here.
+	movzbl	(%rsi), %ecx
+	movzbl	(%rdi), %eax
 
 #if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
 	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx