Allow uint32 value on optimized frames if they are consumed by safe operations.

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 2e554b166b902a18bba4c5da45e3dc11236d87f6..5387fc519de0e8bdc9e3048fd5544083875cab94 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -2500,6 +2500,12 @@ MacroAssembler::kSafepointPushRegisterIndices[Register::kNumRegisters] = {
 };
 
 
+void MacroAssembler::StoreToSafepointRegisterSlot(Register dst,
+                                                  const Immediate& imm) {
+  movq(SafepointRegisterSlot(dst), imm);
+}
+
+
 void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, Register src) {
   movq(SafepointRegisterSlot(dst), src);
 }
@@ -2858,6 +2864,26 @@ void MacroAssembler::ClampDoubleToUint8(XMMRegister input_reg,
 }
 
 
+static double kUint32Bias =
+    static_cast<double>(static_cast<uint32_t>(0xFFFFFFFF)) + 1;
+
+
+void MacroAssembler::LoadUint32(XMMRegister dst,
+                                Register src,
+                                XMMRegister scratch) {
+  Label done;
+  cmpl(src, Immediate(0));
+  movq(kScratchRegister,
+       reinterpret_cast<int64_t>(&kUint32Bias),
+       RelocInfo::NONE);
+  movsd(scratch, Operand(kScratchRegister, 0));
+  cvtlsi2sd(dst, src);
+  j(not_sign, &done, Label::kNear);
+  addsd(dst, scratch);
+  bind(&done);
+}
+
+
 void MacroAssembler::LoadInstanceDescriptors(Register map,
                                              Register descriptors) {
   Register temp = descriptors;