From f04f8373ddd71794050b904174fb06967be6393f Mon Sep 17 00:00:00 2001 From: Noah Goldstein Date: Wed, 19 Oct 2022 19:13:37 -0700 Subject: x86: Use `testb` for case-locale check in str{n}casecmp-sse42 `testb` saves a bit of code size is the imm-operand can be encoded 1-bytes. Tested on x86-64. --- sysdeps/x86_64/multiarch/strcmp-sse4_2.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'sysdeps/x86_64/multiarch') diff --git a/sysdeps/x86_64/multiarch/strcmp-sse4_2.S b/sysdeps/x86_64/multiarch/strcmp-sse4_2.S index dc6fc90e14..6b540ff894 100644 --- a/sysdeps/x86_64/multiarch/strcmp-sse4_2.S +++ b/sysdeps/x86_64/multiarch/strcmp-sse4_2.S @@ -119,7 +119,7 @@ STRCMP: # else mov (%rdx), %RAX_LP # endif - testl $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax) + testb $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax) jne __strcasecmp_l_nonascii # endif # ifdef USE_AS_STRNCASECMP_L @@ -130,7 +130,7 @@ STRCMP: # else mov (%rcx), %RAX_LP # endif - testl $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax) + testb $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax) jne __strncasecmp_l_nonascii # endif -- cgit 1.4.1