Various improvements related to legalization code.

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 118 matching lines @@
                           int32_t RegNum = Variable::NoRegister);
   // Turn a pointer operand into a memory operand that can be
   // used by a real load/store operation. Legalizes the operand as well.
   // This is a nop if the operand is already a legal memory operand.
   OperandX8632Mem *FormMemoryOperand(Operand *Ptr, Type Ty);
 
   Variable *makeReg(Type Ty, int32_t RegNum = Variable::NoRegister);
   InstCall *makeHelperCall(const IceString &Name, Variable *Dest,
                            SizeT MaxSrcs) {
     bool SuppressMangling = true;
-    Type Ty = Dest ? Dest->getType() : IceType_void;
-    Constant *CallTarget = Ctx->getConstantSym(Ty, 0, Name, SuppressMangling);
+    const Type FunctionPointerType = IceType_i32;
+    Constant *CallTarget =
+        Ctx->getConstantSym(FunctionPointerType, 0, Name, SuppressMangling);
     InstCall *Call = InstCall::create(Func, MaxSrcs, Dest, CallTarget);
     return Call;
   }
   static Type stackSlotType();
 
   Variable *copyToReg(Operand *Src, int32_t RegNum = Variable::NoRegister);
 
   // The following are helpers that insert lowered x86 instructions
   // with minimal syntactic overhead, so that the lowering code can
   // look as close to assembly as practical.
@@ skipping 218 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