Update load/store utilities for 64-bit backends

This CL replaces the typical use of LoadWord/StoreWord
utilities (which, in practice, were 32-bit load/store) in
favor of a new set that make the size explicit.  We now have:

   LoadWordDisp/StoreWordDisp:
    32 or 64 depending on target.  Load or store the natural
    word size.  Expect this to be used infrequently - generally
    when we know we're dealing with a native pointer or flushed
    register not holding a Dalvik value (Dalvik values will flush
    to home location sizes based on Dalvik, rather than the target).

   Load32Disp/Store32Disp:
     Load or store 32 bits, regardless of target.

   Load64Disp/Store64Disp:
     Load or store 64 bits, regardless of target.

   LoadRefDisp:
     Load a 32-bit compressed reference, and expand it to the
     natural word size in the target register.

   StoreRefDisp:
     Compress a reference held in a register of the natural word
     size and store it as a 32-bit compressed reference.

Change-Id: I50fcbc8684476abd9527777ee7c152c61ba41c6f
diff --git a/compiler/dex/quick/arm/target_arm.cc b/compiler/dex/quick/arm/target_arm.cc
index 1053a8f..305e89b 100644
--- a/compiler/dex/quick/arm/target_arm.cc
+++ b/compiler/dex/quick/arm/target_arm.cc
@@ -656,7 +656,7 @@
   if (info->live && info->dirty) {
     info->dirty = false;
     int v_reg = mir_graph_->SRegToVReg(info->s_reg);
-    StoreBaseDisp(rs_rARM_SP, VRegOffset(v_reg), reg, kWord);
+    StoreBaseDisp(rs_rARM_SP, VRegOffset(v_reg), reg, k32);
   }
 }
 
@@ -738,8 +738,8 @@
 
 LIR* ArmMir2Lir::CheckSuspendUsingLoad() {
   RegStorage tmp = rs_r0;
-  LoadWordDisp(rs_rARM_SELF, Thread::ThreadSuspendTriggerOffset<4>().Int32Value(), tmp);
-  LIR* load2 = LoadWordDisp(tmp, 0, tmp);
+  Load32Disp(rs_rARM_SELF, Thread::ThreadSuspendTriggerOffset<4>().Int32Value(), tmp);
+  LIR* load2 = Load32Disp(tmp, 0, tmp);
   return load2;
 }