| Index: src/flag-definitions.h
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| diff --git a/src/flag-definitions.h b/src/flag-definitions.h
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| index 263a2a40d7f00fc835a3bda8869dd6d6f4eafbb3..b075087870d6f437d0328305661aec1e3910b6ac 100644
 | 
| --- a/src/flag-definitions.h
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| +++ b/src/flag-definitions.h
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| @@ -108,6 +108,8 @@ DEFINE_bool(enable_sse2, true,
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|              "enable use of SSE2 instructions if available")
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|  DEFINE_bool(enable_sse3, true,
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|              "enable use of SSE3 instructions if available")
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| +DEFINE_bool(enable_sse4_1, true,
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| +            "enable use of SSE4.1 instructions if available")
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|  DEFINE_bool(enable_cmov, true,
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|              "enable use of CMOV instruction if available")
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|  DEFINE_bool(enable_rdtsc, true,
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| 
 |