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Tweaking some instructions.

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This commit is contained in:
Ben Vanik
2014-08-29 21:49:26 -07:00
parent f74aafeb8a
commit 9c2cf49755
2 changed files with 26 additions and 20 deletions
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6
src/alloy/backend/x64/x64_sequences.cc
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@@ -3681,7 +3681,7 @@ EMITTER(POW2_F32, MATCH(I<OPCODE_POW2, F32<>, F32<>>)) {
static __m128 EmulatePow2(void*, __m128 src) {
float src_value;
_mm_store_ss(&src_value, src);
float result = std::pow(2.0f, src_value);
float result = std::exp2(src_value);
return _mm_load_ss(&result);
}
static void Emit(X64Emitter& e, const EmitArgType& i) {
@@ -3695,7 +3695,7 @@ EMITTER(POW2_F64, MATCH(I<OPCODE_POW2, F64<>, F64<>>)) {
static __m128d EmulatePow2(void*, __m128d src) {
double src_value;
_mm_store_sd(&src_value, src);
double result = std::pow(2, src_value);
double result = std::exp2(src_value);
return _mm_load_sd(&result);
}
static void Emit(X64Emitter& e, const EmitArgType& i) {
@@ -3710,7 +3710,7 @@ EMITTER(POW2_V128, MATCH(I<OPCODE_POW2, V128<>, V128<>>)) {
alignas(16) float values[4];
_mm_store_ps(values, src);
for (size_t i = 0; i < 4; ++i) {
values[i] = std::pow(2.0f, values[i]);
values[i] = std::exp2(values[i]);
}
return _mm_load_ps(values);
}