Enable Float32Array_getIndexed on X64 now that cvtss2sd is implemented

runtime/vm/assembler_x64.cc

Index: runtime/vm/assembler_x64.cc
diff --git a/runtime/vm/assembler_x64.cc b/runtime/vm/assembler_x64.cc
index 8bc1d198ef498f98167584dc2f74e652aa0fd468..2fc929e418f79a52e9f77906335b44e92626cddd 100644
--- a/runtime/vm/assembler_x64.cc
+++ b/runtime/vm/assembler_x64.cc
@@ -670,6 +670,21 @@ void Assembler::cvttsd2siq(Register dst, XmmRegister src) {
   EmitXmmRegisterOperand(dst, src);
 }
 
+void Assembler::cvtss2sd(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);

[srdjan, 2012/09/29 00:19:57]

add asserts for dst, src <= XMM7

+  EmitUint8(0xF3);
+  EmitUint8(0x0F);
+  EmitUint8(0x5A);
+  EmitXmmRegisterOperand(dst, src);
+}
+
+void Assembler::cvtsd2ss(XmmRegister dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);

[srdjan, 2012/09/29 00:19:57]

ditto

+  EmitUint8(0xF2);
+  EmitUint8(0x0F);
+  EmitUint8(0x5A);
+  EmitXmmRegisterOperand(dst, src);
+}
 
 void Assembler::fldl(const Address& src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);