PPC/s390: [builtins] Remove the unused AllocationSite slot from ConstructFrame.

Port 77419488

Original commit message:

  This slot is completely unused and always undefined anyways, so there's
  no need to maintain the slot during object construction.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, bjaideep@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com
BUG=

Review-Url: https://chromiumcodereview.appspot.com/2429983002
Cr-Commit-Position: refs/heads/master@{#40441}

src/builtins/ppc/builtins-ppc.cc

@@ -555,14 +555,14 @@ void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) {
   GenerateTailCallToSharedCode(masm);
 }
 
-static void Generate_JSConstructStubHelper(MacroAssembler* masm,
-                                           bool is_api_function,
-                                           bool create_implicit_receiver,
-                                           bool check_derived_construct) {
+namespace {
+
+void Generate_JSConstructStubHelper(MacroAssembler* masm, bool is_api_function,
+                                    bool create_implicit_receiver,
+                                    bool check_derived_construct) {
   // ----------- S t a t e -------------
   //  -- r3     : number of arguments
   //  -- r4     : constructor function
-  //  -- r5     : allocation site or undefined
   //  -- r6     : new target
   //  -- cp     : context
   //  -- lr     : return address
@@ -576,15 +576,14 @@ static void Generate_JSConstructStubHelper(MacroAssembler* masm,
     FrameAndConstantPoolScope scope(masm, StackFrame::CONSTRUCT);
 
     // Preserve the incoming parameters on the stack.
-    __ AssertUndefinedOrAllocationSite(r5, r7);
 
     if (!create_implicit_receiver) {
       __ SmiTag(r7, r3, SetRC);
-      __ Push(cp, r5, r7);
+      __ Push(cp, r7);
       __ PushRoot(Heap::kTheHoleValueRootIndex);
     } else {
       __ SmiTag(r3);
-      __ Push(cp, r5, r3);
+      __ Push(cp, r3);
 
       // Allocate the new receiver object.
       __ Push(r4, r6);
@@ -711,6 +710,8 @@ static void Generate_JSConstructStubHelper(MacroAssembler* masm,
   __ blr();
 }
 
+}  // namespace
+
 void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) {
   Generate_JSConstructStubHelper(masm, false, true, false);
 }

src/builtins/s390/builtins-s390.cc

@@ -551,14 +551,14 @@ void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) {
   GenerateTailCallToSharedCode(masm);
 }
 
-static void Generate_JSConstructStubHelper(MacroAssembler* masm,
-                                           bool is_api_function,
-                                           bool create_implicit_receiver,
-                                           bool check_derived_construct) {
+namespace {
+
+void Generate_JSConstructStubHelper(MacroAssembler* masm, bool is_api_function,
+                                    bool create_implicit_receiver,
+                                    bool check_derived_construct) {
   // ----------- S t a t e -------------
   //  -- r2     : number of arguments
   //  -- r3     : constructor function
-  //  -- r4     : allocation site or undefined
   //  -- r5     : new target
   //  -- cp     : context
   //  -- lr     : return address
@@ -572,16 +572,15 @@ static void Generate_JSConstructStubHelper(MacroAssembler* masm,
     FrameAndConstantPoolScope scope(masm, StackFrame::CONSTRUCT);
 
     // Preserve the incoming parameters on the stack.
-    __ AssertUndefinedOrAllocationSite(r4, r6);
 
     if (!create_implicit_receiver) {
       __ SmiTag(r6, r2);
       __ LoadAndTestP(r6, r6);
-      __ Push(cp, r4, r6);
+      __ Push(cp, r6);
       __ PushRoot(Heap::kTheHoleValueRootIndex);
     } else {
       __ SmiTag(r2);
-      __ Push(cp, r4, r2);
+      __ Push(cp, r2);
 
       // Allocate the new receiver object.
       __ Push(r3, r5);
@@ -710,6 +709,8 @@ static void Generate_JSConstructStubHelper(MacroAssembler* masm,
   __ Ret();
 }
 
+}  // namespace
+
 void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) {
   Generate_JSConstructStubHelper(masm, false, true, false);
 }