| | |
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| | | /* "REP NOP" is PAUSE, coded for tools that don't know it by that name. */ |
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| | | #if (defined(__GNUC__) || defined(__clang__)) && (defined(__i386__) || defined(__x86_64__)) |
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| | | #define PAUSE_INSTRUCTION() __asm__ __volatile__("pause\n") /* Some assemblers can't do REP NOP, so go with PAUSE. */ |
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| | | #elif (defined(__arm__) && __ARM_ARCH__ >= 7) || defined(__aarch64__) |
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| | | #define PAUSE_INSTRUCTION() __asm__ __volatile__("yield" ::: "memory") |
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| | | #elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64)) |
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| | | #define PAUSE_INSTRUCTION() _mm_pause() /* this is actually "rep nop" and not a SIMD instruction. No inline asm in MSVC x86-64! */ |
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| | | #elif defined(__WATCOMC__) && defined(__386__) |
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