[builtins] Sanitize the machinery around Construct calls.

src/full-codegen/mips/full-codegen-mips.cc

Index: src/full-codegen/mips/full-codegen-mips.cc
diff --git a/src/full-codegen/mips/full-codegen-mips.cc b/src/full-codegen/mips/full-codegen-mips.cc
index 043e31c068a0d3c6baebdf7c2e71fed3982a7f9a..cded3e49da1b534b946f01cedf47811593984770 100644
--- a/src/full-codegen/mips/full-codegen-mips.cc
+++ b/src/full-codegen/mips/full-codegen-mips.cc
@@ -3062,7 +3062,7 @@ void FullCodeGenerator::VisitCallNew(CallNew* expr) {
   __ EmitLoadTypeFeedbackVector(a2);
   __ li(a3, Operand(SmiFromSlot(expr->CallNewFeedbackSlot())));
 
-  CallConstructStub stub(isolate(), RECORD_CONSTRUCTOR_TARGET);
+  CallConstructStub stub(isolate());
   __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
   PrepareForBailoutForId(expr->ReturnId(), TOS_REG);
   // Restore context register.
@@ -3090,20 +3090,15 @@ void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
   // constructor invocation.
   SetConstructCallPosition(expr, arg_count);
 
-  // Load new target into t0.
+  // Load new target into a3.
   VisitForAccumulatorValue(super_call_ref->new_target_var());
-  __ mov(t0, result_register());
+  __ mov(a3, result_register());
 
   // Load function and argument count into a1 and a0.
   __ li(a0, Operand(arg_count));
   __ lw(a1, MemOperand(sp, arg_count * kPointerSize));
 
-  // Record call targets in unoptimized code.
-  __ EmitLoadTypeFeedbackVector(a2);
-  __ li(a3, Operand(SmiFromSlot(expr->CallFeedbackSlot())));
-
-  CallConstructStub stub(isolate(), SUPER_CALL_RECORD_TARGET);
-  __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
+  __ Call(isolate()->builtins()->Construct(), RelocInfo::CONSTRUCT_CALL);
 
   RecordJSReturnSite(expr);