Fix code generation of materialized conditions.

Move the logic for knowing if a condition needs to be materialized
in an optimization pass (so that the information does not change
as a side effect of another optimization).

Also clean-up arm and x86_64 codegen:
- arm: ldr and str are for power-users when a constant is
  in play. We should use LoadFromOffset and StoreToOffset.
- x86_64: fix misuses of movq instead of movl.

Change-Id: I01a03b91803624be2281a344a13ad5efbf4f3ef3
diff --git a/compiler/optimizing/code_generator_arm.h b/compiler/optimizing/code_generator_arm.h
index 9da26e8..c5a8e55 100644
--- a/compiler/optimizing/code_generator_arm.h
+++ b/compiler/optimizing/code_generator_arm.h
@@ -91,7 +91,7 @@
   LocationsBuilderARM(HGraph* graph, CodeGeneratorARM* codegen)
       : HGraphVisitor(graph), codegen_(codegen) {}
 
-#define DECLARE_VISIT_INSTRUCTION(name)     \
+#define DECLARE_VISIT_INSTRUCTION(name, super)     \
   virtual void Visit##name(H##name* instr);
 
   FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)
@@ -111,7 +111,7 @@
  public:
   InstructionCodeGeneratorARM(HGraph* graph, CodeGeneratorARM* codegen);
 
-#define DECLARE_VISIT_INSTRUCTION(name)     \
+#define DECLARE_VISIT_INSTRUCTION(name, super)     \
   virtual void Visit##name(H##name* instr);
 
   FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)