MIPS: Fix [runtime] [proxy] implement [[Construct]].

src/mips/builtins-mips.cc

Index: src/mips/builtins-mips.cc
diff --git a/src/mips/builtins-mips.cc b/src/mips/builtins-mips.cc
index f106a43a6ec2c8bca03fdb67a0eb47cce0a35666..a393f2c4098ada8b4479b0de64d9409e7f8b0090 100644
--- a/src/mips/builtins-mips.cc
+++ b/src/mips/builtins-mips.cc
@@ -1762,8 +1762,7 @@ void Builtins::Generate_ConstructProxy(MacroAssembler* masm) {
   // -----------------------------------
 
   // Call into the Runtime for Proxy [[Construct]].
-  __ Push(a1);
-  __ Push(a3);
+  __ Push(a1, a3);
   // Include the pushed new_target, constructor and the receiver.
   __ Addu(a0, a0, Operand(3));
   // Tail-call to the runtime.
@@ -1792,9 +1791,9 @@ void Builtins::Generate_Construct(MacroAssembler* masm) {
           RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE));
 
   // Check if target has a [[Construct]] internal method.
-  __ lbu(t2, FieldMemOperand(t1, Map::kBitFieldOffset));
-  __ And(t2, t2, Operand(1 << Map::kIsCallable));
-  __ Branch(&non_constructor, eq, t2, Operand(zero_reg));
+  __ lbu(t3, FieldMemOperand(t1, Map::kBitFieldOffset));
+  __ And(t3, t3, Operand(1 << Map::kIsCallable));
+  __ Branch(&non_constructor, eq, t3, Operand(zero_reg));
 
   // Only dispatch to proxies after checking whether they are constructors.
   __ Jump(masm->isolate()->builtins()->ConstructProxy(), RelocInfo::CODE_TARGET,