Long support in optimizing compiler.

- Add stack locations to the Location class.
- Change logic of parameter passing/setup by setting the
  location of such instructions the ones for the calling
  convention.

Change-Id: I4730ad58732813dcb9c238f44f55dfc0baa18799

1 files changed, 12 insertions, 4 deletions

diff --git a/compiler/optimizing/code_generator_arm.h b/compiler/optimizing/code_generator_arm.h
index a51d85e..3fbe631 100644
--- a/compiler/optimizing/code_generator_arm.h
+++ b/compiler/optimizing/code_generator_arm.h
@@ -24,11 +24,14 @@
 namespace art {
 namespace arm {
 
+class CodeGeneratorARM;
+
 static constexpr size_t kArmWordSize = 4;
 
 class LocationsBuilderARM : public HGraphVisitor {
  public:
-  explicit LocationsBuilderARM(HGraph* graph) : HGraphVisitor(graph) { }
+  explicit LocationsBuilderARM(HGraph* graph, CodeGeneratorARM* codegen)
+      : HGraphVisitor(graph), codegen_(codegen) {}
 
 #define DECLARE_VISIT_INSTRUCTION(name)     \
   virtual void Visit##name(H##name* instr);
@@ -38,11 +41,11 @@ class LocationsBuilderARM : public HGraphVisitor {
 #undef DECLARE_VISIT_INSTRUCTION
 
  private:
+  CodeGeneratorARM* const codegen_;
+
   DISALLOW_COPY_AND_ASSIGN(LocationsBuilderARM);
 };
 
-class CodeGeneratorARM;
-
 class InstructionCodeGeneratorARM : public HGraphVisitor {
  public:
   InstructionCodeGeneratorARM(HGraph* graph, CodeGeneratorARM* codegen);
@@ -68,7 +71,7 @@ class CodeGeneratorARM : public CodeGenerator {
  public:
   explicit CodeGeneratorARM(HGraph* graph)
       : CodeGenerator(graph),
-        location_builder_(graph),
+        location_builder_(graph, this),
         instruction_visitor_(graph, this) { }
   virtual ~CodeGeneratorARM() { }
 
@@ -96,6 +99,11 @@ class CodeGeneratorARM : public CodeGenerator {
   int32_t GetStackSlot(HLocal* local) const;
 
  private:
+  // Helper method to move a 32bits value between two locations.
+  void Move32(Location destination, Location source);
+  // Helper method to move a 64bits value between two locations.
+  void Move64(Location destination, Location source);
+
   LocationsBuilderARM location_builder_;
   InstructionCodeGeneratorARM instruction_visitor_;
   ArmAssembler assembler_;