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Unified Diff: src/ia32/lithium-codegen-ia32.cc

Issue 189823003: Reland "Introduce intrinsics for double values in Javascript." (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 9 months ago
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Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 5f5e3f3dde3862939507efcf7d1f0ec96aee182e..475986d25f5a030acb82ce8d95d4b775fdfa007f 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -5785,6 +5785,45 @@ void LCodeGen::DoClampTToUint8NoSSE2(LClampTToUint8NoSSE2* instr) {
}
+void LCodeGen::DoDoubleBits(LDoubleBits* instr) {
+ CpuFeatureScope scope(masm(), SSE2);
+ XMMRegister value_reg = ToDoubleRegister(instr->value());
+ Register result_reg = ToRegister(instr->result());
+ if (instr->hydrogen()->bits() == HDoubleBits::HIGH) {
+ if (CpuFeatures::IsSupported(SSE4_1)) {
+ CpuFeatureScope scope2(masm(), SSE4_1);
+ __ pextrd(result_reg, value_reg, 1);
+ } else {
+ XMMRegister xmm_scratch = double_scratch0();
+ __ pshufd(xmm_scratch, value_reg, 1);
+ __ movd(result_reg, xmm_scratch);
+ }
+ } else {
+ __ movd(result_reg, value_reg);
+ }
+}
+
+
+void LCodeGen::DoConstructDouble(LConstructDouble* instr) {
+ Register hi_reg = ToRegister(instr->hi());
+ Register lo_reg = ToRegister(instr->lo());
+ XMMRegister result_reg = ToDoubleRegister(instr->result());
+ CpuFeatureScope scope(masm(), SSE2);
+
+ if (CpuFeatures::IsSupported(SSE4_1)) {
+ CpuFeatureScope scope2(masm(), SSE4_1);
+ __ movd(result_reg, lo_reg);
+ __ pinsrd(result_reg, hi_reg, 1);
+ } else {
+ XMMRegister xmm_scratch = double_scratch0();
+ __ movd(result_reg, hi_reg);
+ __ psllq(result_reg, 32);
+ __ movd(xmm_scratch, lo_reg);
+ __ orps(result_reg, xmm_scratch);
+ }
+}
+
+
void LCodeGen::DoAllocate(LAllocate* instr) {
class DeferredAllocate V8_FINAL : public LDeferredCode {
public:
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