PPC/s390: [arm64] Pair some pushes and delete unused code

Port 193dcf76

Original Commit Message:

    Pair some stack ops so that they deal with an even numbers of registers, add
    padding around profile entry calls, and delete some unused macro assembler code.

R=martyn.capewell@arm.com, joransiu@ca.ibm.com, jyan@ca.ibm.com, bjaideep@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: I017ccc699839b04bc7295d00c45e315f7cf074c1
Reviewed-on: https://chromium-review.googlesource.com/713996Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#48473}

src/ppc/macro-assembler-ppc.cc

@@ -958,50 +958,6 @@ int TurboAssembler::LeaveFrame(StackFrame::Type type, int stack_adjustment) {
   return frame_ends;
 }
 
-void MacroAssembler::EnterBuiltinFrame(Register context, Register target,
-                                       Register argc) {
-  int fp_delta = 0;
-  mflr(r0);
-  if (FLAG_enable_embedded_constant_pool) {
-    if (target.is_valid()) {
-      Push(r0, fp, kConstantPoolRegister, context, target);
-      fp_delta = 3;
-    } else {
-      Push(r0, fp, kConstantPoolRegister, context);
-      fp_delta = 2;
-    }
-  } else {
-    if (target.is_valid()) {
-      Push(r0, fp, context, target);
-      fp_delta = 2;
-    } else {
-      Push(r0, fp, context);
-      fp_delta = 1;
-    }
-  }
-  addi(fp, sp, Operand(fp_delta * kPointerSize));
-  Push(argc);
-}
-
-void MacroAssembler::LeaveBuiltinFrame(Register context, Register target,
-                                       Register argc) {
-  Pop(argc);
-  if (FLAG_enable_embedded_constant_pool) {
-    if (target.is_valid()) {
-      Pop(r0, fp, kConstantPoolRegister, context, target);
-    } else {
-      Pop(r0, fp, kConstantPoolRegister, context);
-    }
-  } else {
-    if (target.is_valid()) {
-      Pop(r0, fp, context, target);
-    } else {
-      Pop(r0, fp, context);
-    }
-  }
-  mtlr(r0);
-}
-
 // ExitFrame layout (probably wrongish.. needs updating)
 //
 //  SP -> previousSP

src/ppc/macro-assembler-ppc.h

@@ -1037,9 +1037,6 @@ class MacroAssembler : public TurboAssembler {
     DecodeField<Field>(reg, reg, rc);
   }
 
-  void EnterBuiltinFrame(Register context, Register target, Register argc);
-  void LeaveBuiltinFrame(Register context, Register target, Register argc);
-
  private:
   static const int kSmiShift = kSmiTagSize + kSmiShiftSize;
 

src/s390/macro-assembler-s390.cc

@@ -980,20 +980,6 @@ int TurboAssembler::LeaveFrame(StackFrame::Type type, int stack_adjustment) {
   return frame_ends;
 }
 
-void MacroAssembler::EnterBuiltinFrame(Register context, Register target,
-                                       Register argc) {
-  CleanseP(r14);
-  Push(r14, fp, context, target);
-  la(fp, MemOperand(sp, 2 * kPointerSize));
-  Push(argc);
-}
-
-void MacroAssembler::LeaveBuiltinFrame(Register context, Register target,
-                                       Register argc) {
-  Pop(argc);
-  Pop(r14, fp, context, target);
-}
-
 // ExitFrame layout (probably wrongish.. needs updating)
 //
 //  SP -> previousSP

src/s390/macro-assembler-s390.h

@@ -1175,9 +1175,6 @@ class MacroAssembler : public TurboAssembler {
                       bool restore_context,
                       bool argument_count_is_length = false);
 
-  void EnterBuiltinFrame(Register context, Register target, Register argc);
-  void LeaveBuiltinFrame(Register context, Register target, Register argc);
-
   // Load the global proxy from the current context.
   void LoadGlobalProxy(Register dst) {
     LoadNativeContextSlot(Context::GLOBAL_PROXY_INDEX, dst);