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| author | Uros Bizjak <uros@gcc.gnu.org> | 2011-05-22 20:53:32 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2011-05-22 20:53:32 +0200 |
| commit | ef230b38360a3565c7cf88023fc109e3e76e119b (patch) | |
| tree | 9e5fdec048d251da342293835312e65384c5ceea /libcpp/lex.c | |
| parent | 7a1db261dec3c7da38f1576a03ec44167649c1af (diff) | |
| download | gcc-ef230b38360a3565c7cf88023fc109e3e76e119b.zip gcc-ef230b38360a3565c7cf88023fc109e3e76e119b.tar.gz gcc-ef230b38360a3565c7cf88023fc109e3e76e119b.tar.bz2 | |
re PR bootstrap/49104 (bootstrap failure on AMD K6-2 with illegal instruction (cmove) in stage2)
PR target/49104
* config/i386/cpuid.h (bit_MMXEXT): New define.
libcpp/ChangeLog:
2011-05-22 Uros Bizjak <ubizjak@gmail.com>
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.
From-SVN: r174032
Diffstat (limited to 'libcpp/lex.c')
| -rw-r--r-- | libcpp/lex.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libcpp/lex.c b/libcpp/lex.c index 3bf4886..bbce62c 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 +505,7 @@ 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))) impl = search_line_mmx; } |