Quick: Clean up Mir2Lir codegen.

Clean up WrapPointer()/UnwrapPointer() and OpPcRelLoad().

Change-Id: I1a91f01e1e779599c77f3f6efcac2a6ad34629cf
diff --git a/compiler/dex/quick/arm/int_arm.cc b/compiler/dex/quick/arm/int_arm.cc
index ef26323..9193e1b 100644
--- a/compiler/dex/quick/arm/int_arm.cc
+++ b/compiler/dex/quick/arm/int_arm.cc
@@ -1081,9 +1081,10 @@
   return true;
 }
 
-LIR* ArmMir2Lir::OpPcRelLoad(RegStorage reg, LIR* target) {
+void ArmMir2Lir::OpPcRelLoad(RegStorage reg, LIR* target) {
   ScopedMemRefType mem_ref_type(this, ResourceMask::kLiteral);
-  return RawLIR(current_dalvik_offset_, kThumb2LdrPcRel12, reg.GetReg(), 0, 0, 0, 0, target);
+  LIR* lir = NewLIR2(kThumb2LdrPcRel12, reg.GetReg(), 0);
+  lir->target = target;
 }
 
 LIR* ArmMir2Lir::OpVldm(RegStorage r_base, int count) {