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Implement emscripten_atomic_fence(). #139

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Mar 24, 2016
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Implement emscripten_atomic_fence(). #139

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3 changes: 2 additions & 1 deletion lib/Target/JSBackend/CallHandlers.h
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Expand Up @@ -1438,7 +1438,8 @@ DEF_BUILTIN_HANDLER(emscripten_bool8x16_anyTrue, SIMD_Bool8x16_anyTrue);
DEF_BUILTIN_HANDLER(emscripten_bool8x16_allTrue, SIMD_Bool8x16_allTrue);

DEF_CALL_HANDLER(emscripten_atomic_fence, {
return "/* fence */";
if (EnablePthreads) return "Atomics_add(HEAP32, 0, 0) /* fence */";
else return "/* fence */";
})

// Setups
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3 changes: 2 additions & 1 deletion lib/Target/JSBackend/JSBackend.cpp
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Expand Up @@ -2728,7 +2728,8 @@ void JSWriter::generateExpression(const User *I, raw_string_ostream& Code) {
break;
}
case Instruction::Fence:
Code << "/* fence */"; // not in the spec currently, so nothing to do here
if (EnablePthreads) Code << "Atomics_add(HEAP32, 0, 0) /* fence */";
else Code << "/* fence */";
break;
}

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