MIPS: Push safepoint registers in deferred number-to-i/u only on-demand.

src/mips/lithium-codegen-mips.h

Index: src/mips/lithium-codegen-mips.h
diff --git a/src/mips/lithium-codegen-mips.h b/src/mips/lithium-codegen-mips.h
index b4651702e0b4ebd599df095dc393cea23fd7028b..28782cc778c78e1bbfb972ad7ac57762fdd039af 100644
--- a/src/mips/lithium-codegen-mips.h
+++ b/src/mips/lithium-codegen-mips.h
@@ -124,9 +124,11 @@ class LCodeGen: public LCodeGenBase {
   void DoDeferredNumberTagD(LNumberTagD* instr);
 
   enum IntegerSignedness { SIGNED_INT32, UNSIGNED_INT32 };
-  void DoDeferredNumberTagI(LInstruction* instr,
-                            LOperand* value,
-                            IntegerSignedness signedness);
+  void DoDeferredNumberTagIU(LInstruction* instr,
+                             LOperand* value,
+                             LOperand* temp1,
+                             LOperand* temp2,
+                             IntegerSignedness signedness);
 
   void DoDeferredTaggedToI(LTaggedToI* instr);
   void DoDeferredMathAbsTaggedHeapNumber(LMathAbs* instr);