Align function starts to target-specific bundle alignment.

src/IceTargetLoweringX8632.h

 //===- subzero/src/IceTargetLoweringX8632.h - x86-32 lowering ---*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the TargetLoweringX8632 class, which
@@ skipping 27 matching lines @@
   }
   virtual bool hasFramePointer() const { return IsEbpBasedFrame; }
   virtual SizeT getFrameOrStackReg() const {
     return IsEbpBasedFrame ? Reg_ebp : Reg_esp;
   }
   virtual size_t typeWidthInBytesOnStack(Type Ty) const {
     // Round up to the next multiple of 4 bytes.  In particular, i1,
     // i8, and i16 are rounded up to 4 bytes.
     return (typeWidthInBytes(Ty) + 3) & ~3;
   }
+  virtual SizeT getBundleAlignLog2Bytes() const { return 5; }
+  virtual llvm::ArrayRef<uint8_t> getNonExecBundlePadding() const {
+    static const uint8_t Padding[] = { 0xF4 };
+    return llvm::ArrayRef<uint8_t>(Padding, 1);
+  }
   virtual void emitVariable(const Variable *Var, const Cfg *Func) const;
   virtual void lowerArguments();
   virtual void addProlog(CfgNode *Node);
   virtual void addEpilog(CfgNode *Node);
   virtual void emitConstants() const;
   SizeT makeNextLabelNumber() { return NextLabelNumber++; }
   // Ensure that a 64-bit Variable has been split into 2 32-bit
   // Variables, creating them if necessary.  This is needed for all
   // I64 operations, and it is needed for pushing F64 arguments for
   // function calls using the 32-bit push instruction (though the
@@ skipping 441 matching lines @@
   virtual ~TargetGlobalInitX8632() {}
 };
 
 template <> void ConstantInteger::emit(GlobalContext *Ctx) const;
 template <> void ConstantFloat::emit(GlobalContext *Ctx) const;
 template <> void ConstantDouble::emit(GlobalContext *Ctx) const;
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8632_H