Support Float64Arrays

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 46c71e8b1753bdf65d5d385c2bb24770024443eb..423cb69c756ab970e9d1bebe4b1aba06875f4fb3 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -2338,6 +2338,9 @@ void LCodeGen::DoLoadKeyedSpecializedArrayElement(
     XMMRegister result(ToDoubleRegister(instr->result()));
     __ movss(result, Operand(external_pointer, key, times_4, 0));
     __ cvtss2sd(result, result);
+  } else if (array_type == kExternalDoubleArray) {
+    __ movdbl(ToDoubleRegister(instr->result()),
+              Operand(external_pointer, key, times_8, 0));
   } else {
     Register result(ToRegister(instr->result()));
     switch (array_type) {
@@ -2366,6 +2369,7 @@ void LCodeGen::DoLoadKeyedSpecializedArrayElement(
         DeoptimizeIf(negative, instr->environment());
         break;
       case kExternalFloatArray:
+      case kExternalDoubleArray:
         UNREACHABLE();
         break;
     }
@@ -3047,6 +3051,9 @@ void LCodeGen::DoStoreKeyedSpecializedArrayElement(
   if (array_type == kExternalFloatArray) {
     __ cvtsd2ss(xmm0, ToDoubleRegister(instr->value()));
     __ movss(Operand(external_pointer, key, times_4, 0), xmm0);
+  } else if (array_type == kExternalDoubleArray) {
+    __ movdbl(Operand(external_pointer, key, times_8, 0),
+              ToDoubleRegister(instr->value()));
   } else {
     Register value = ToRegister(instr->value());
     switch (array_type) {
@@ -3081,6 +3088,7 @@ void LCodeGen::DoStoreKeyedSpecializedArrayElement(
         __ mov(Operand(external_pointer, key, times_4, 0), value);
         break;
       case kExternalFloatArray:
+      case kExternalDoubleArray:
         UNREACHABLE();
         break;
     }