A64: Synchronize with r17104.

src/a64/lithium-a64.h

Index: src/a64/lithium-a64.h
diff --git a/src/a64/lithium-a64.h b/src/a64/lithium-a64.h
index 34219fad499051b606b21e94beb863beb5cda38f..2c5fa6ac712141bb5308ab22e776b7d923430d2e 100644
--- a/src/a64/lithium-a64.h
+++ b/src/a64/lithium-a64.h
@@ -284,7 +284,7 @@ class LInstruction : public ZoneObject {
   // Interface to the register allocator and iterators.
   bool ClobbersTemps() const { return IsCall(); }
   bool ClobbersRegisters() const { return IsCall(); }
-  bool ClobbersDoubleRegisters() const { return IsCall(); }
+  virtual bool ClobbersDoubleRegisters() const { return IsCall(); }
   bool IsMarkedAsCall() const { return IsCall(); }
 
   virtual bool HasResult() const = 0;
@@ -493,17 +493,17 @@ class LDummyUse V8_FINAL : public LTemplateInstruction<1, 1, 0> {
 
 class LGoto V8_FINAL : public LTemplateInstruction<0, 0, 0> {
  public:
-  explicit LGoto(int block_id) : block_id_(block_id) { }
+  explicit LGoto(HBasicBlock* block) : block_(block) { }
 
   virtual bool HasInterestingComment(LCodeGen* gen) const V8_OVERRIDE;
   DECLARE_CONCRETE_INSTRUCTION(Goto, "goto")
   virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE;
   virtual bool IsControl() const V8_OVERRIDE { return true; }
 
-  int block_id() const { return block_id_; }
+  int block_id() const { return block_->block_id(); }
 
  private:
-  int block_id_;
+  HBasicBlock* block_;
 };
 
 
@@ -923,8 +923,13 @@ class LCallRuntime V8_FINAL : public LTemplateInstruction<1, 0, 0> {
   DECLARE_CONCRETE_INSTRUCTION(CallRuntime, "call-runtime")
   DECLARE_HYDROGEN_ACCESSOR(CallRuntime)
 
+  virtual bool ClobbersDoubleRegisters() const V8_OVERRIDE {
+    return save_doubles() == kDontSaveFPRegs;
+  }
+
   const Runtime::Function* function() const { return hydrogen()->function(); }
   int arity() const { return hydrogen()->argument_count(); }
+  SaveFPRegsMode save_doubles() const { return hydrogen()->save_doubles(); }
 };
 
 
@@ -2798,7 +2803,7 @@ class LPlatformChunk V8_FINAL : public LChunk {
       : LChunk(info, graph) { }
 
   int GetNextSpillIndex();
-  LOperand* GetNextSpillSlot(bool is_double);
+  LOperand* GetNextSpillSlot(RegisterKind kind);
 };
 
 
@@ -2821,6 +2826,8 @@ class LChunkBuilder  V8_FINAL BASE_EMBEDDED {
   // Build the sequence for the graph.
   LPlatformChunk* Build();
 
+  LInstruction* CheckElideControlInstruction(HControlInstruction* instr);
+
   // Declare methods that deal with the individual node types.
 #define DECLARE_DO(type) LInstruction* Do##type(H##type* node);
   HYDROGEN_CONCRETE_INSTRUCTION_LIST(DECLARE_DO)