emitIAS for push -- simplify push since it's not used for args passing anymore

src/IceTargetLoweringX8632.cpp

 //===- subzero/src/IceTargetLoweringX8632.cpp - x86-32 lowering -----------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the TargetLoweringX8632 class, which
@@ skipping 733 matching lines @@
   uint32_t LocalsSpillAreaSize = SpillAreaSizeBytes;
 
   SpillAreaSizeBytes += GlobalsSize;
 
   // Add push instructions for preserved registers.
   uint32_t NumCallee = 0;
   for (SizeT i = 0; i < CalleeSaves.size(); ++i) {
     if (CalleeSaves[i] && RegsUsed[i]) {
       ++NumCallee;
       PreservedRegsSizeBytes += 4;
-      const bool SuppressStackAdjustment = true;
-      _push(getPhysicalRegister(i), SuppressStackAdjustment);
+      _push(getPhysicalRegister(i));
     }
   }
   Ctx->statsUpdateRegistersSaved(NumCallee);
 
   // Generate "push ebp; mov ebp, esp"
   if (IsEbpBasedFrame) {
     assert((RegsUsed & getRegisterSet(RegSet_FramePointer, RegSet_None))
                .count() == 0);
     PreservedRegsSizeBytes += 4;
     Variable *ebp = getPhysicalRegister(RegX8632::Reg_ebp);
     Variable *esp = getPhysicalRegister(RegX8632::Reg_esp);
-    const bool SuppressStackAdjustment = true;
-    _push(ebp, SuppressStackAdjustment);
+    _push(ebp);
     _mov(ebp, esp);
   }
 
   // Align the variables area. SpillAreaPaddingBytes is the size of
   // the region after the preserved registers and before the spill
   // areas.
   uint32_t SpillAreaPaddingBytes = 0;
   if (SpillAreaAlignmentBytes) {
     assert(SpillAreaAlignmentBytes <= X86_STACK_ALIGNMENT_BYTES);
     uint32_t PaddingStart = X86_RET_IP_SIZE_BYTES + PreservedRegsSizeBytes;
@@ skipping 3741 matching lines @@
     Str << "\t.align\t" << Align << "\n";
     Str << MangledName << ":\n";
     for (SizeT i = 0; i < Size; ++i) {
       Str << "\t.byte\t" << (((unsigned)Data[i]) & 0xff) << "\n";
     }
     Str << "\t.size\t" << MangledName << ", " << Size << "\n";
   }
 }
 
 } // end of namespace Ice