From 19444be5c75a1e7bcc7f2490a3503947d4904b64 Mon Sep 17 00:00:00 2001 From: uros Date: Sun, 22 May 2011 19:14:50 +0000 Subject: [PATCH] PR target/49104 * config/i386/cpuid.h (bit_MMXEXT): New define. libcpp/ChangeLog: 2011-05-22 Uros Bizjak PR target/49104 * lex.c (init_vectorized_lexer): Do not set "minimum" when __3dNOW_A__ is defined. Check bit_MMXEXT and bit_CMOV to use search_line_mmx. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174038 138bc75d-0d04-0410-961f-82ee72b054a4 index e9d0fab..3c3f47b 100644 --- a/gcc/config/i386/cpuid.h +++ b/gcc/config/i386/cpuid.h @@ -57,6 +57,7 @@ #define bit_TBM (1 << 21) /* %edx */ +#define bit_MMXEXT (1 << 22) #define bit_LM (1 << 29) #define bit_3DNOWP (1 << 30) #define bit_3DNOW (1 << 31) index 3bf4886..6c3be71 100644 --- a/libcpp/lex.c +++ b/libcpp/lex.c @@ -294,7 +294,7 @@ static const char repl_chars[4][16] __attribute__((aligned(16))) = { /* A version of the fast scanner using MMX vectorized byte compare insns. This uses the PMOVMSKB instruction which was introduced with "MMX2", - which was packaged into SSE1; it is also present in the AMD 3dNOW-A + which was packaged into SSE1; it is also present in the AMD MMX extension. Mark the function as using "sse" so that we emit a real "emms" instruction, rather than the 3dNOW "femms" instruction. */ @@ -488,7 +488,7 @@ init_vectorized_lexer (void) minimum = 3; #elif defined(__SSE2__) minimum = 2; -#elif defined(__SSE__) || defined(__3dNOW_A__) +#elif defined(__SSE__) minimum = 1; #endif @@ -505,7 +505,8 @@ init_vectorized_lexer (void) } else if (__get_cpuid (0x80000001, &dummy, &dummy, &dummy, &edx)) { - if (minimum == 1 || edx & bit_3DNOWP) + if (minimum == 1 + || (edx & (bit_MMXEXT | bit_CMOV)) == (bit_MMXEXT | bit_CMOV)) impl = search_line_mmx; } -- 1.7.0.4