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Don't allow code path to be forced on a system that doesn't support it

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git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@159 632fc199-4ca6-4c93-a231-07263d6284db
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DRC
2010-03-03 08:46:29 +00:00
parent 048990944f
commit f8b77c44f1
1 changed files with 4 additions and 4 deletions
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8
simd/jsimd_i386.c
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@@ -48,16 +48,16 @@ init_simd (void)
/* Force different settings through environment variables */ /* Force different settings through environment variables */
env = getenv("JSIMD_FORCEMMX"); env = getenv("JSIMD_FORCEMMX");
if ((env != NULL) && (strcmp(env, "1") == 0)) if ((env != NULL) && (strcmp(env, "1") == 0))
simd_support = JSIMD_MMX; simd_support &= JSIMD_MMX;
env = getenv("JSIMD_FORCE3DNOW"); env = getenv("JSIMD_FORCE3DNOW");
if ((env != NULL) && (strcmp(env, "1") == 0)) if ((env != NULL) && (strcmp(env, "1") == 0))
simd_support = JSIMD_3DNOW|JSIMD_MMX; simd_support &= JSIMD_3DNOW|JSIMD_MMX;
env = getenv("JSIMD_FORCESSE"); env = getenv("JSIMD_FORCESSE");
if ((env != NULL) && (strcmp(env, "1") == 0)) if ((env != NULL) && (strcmp(env, "1") == 0))
simd_support = JSIMD_SSE|JSIMD_MMX; simd_support &= JSIMD_SSE|JSIMD_MMX;
env = getenv("JSIMD_FORCESSE2"); env = getenv("JSIMD_FORCESSE2");
if ((env != NULL) && (strcmp(env, "1") == 0)) if ((env != NULL) && (strcmp(env, "1") == 0))
simd_support = JSIMD_SSE2; simd_support &= JSIMD_SSE2;
} }
GLOBAL(int) GLOBAL(int)