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ICU-5349 Use __x86_64__ for AMD64 when determining CPU type.
X-SVN-Rev: 20184
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@ -170,7 +170,7 @@ typedef unsigned int uint32_t;
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#define ICU_USE_THREADS @ICU_USE_THREADS@
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/* On strong memory model CPUs (e.g. x86 CPUs), we use a safe & quick double check lock. */
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#if defined(__GNUC__) && (defined(__i386__) || defined(__amd64__))
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#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
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#define UMTX_STRONG_MEMORY_MODEL 1
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#endif
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