Merge r7516, r7541 into 3.1 branch.

src/x64/lithium-codegen-x64.h

Index: src/x64/lithium-codegen-x64.h
===================================================================
--- src/x64/lithium-codegen-x64.h	(revision 7542)
+++ src/x64/lithium-codegen-x64.h	(working copy)
@@ -60,7 +60,8 @@
         status_(UNUSED),
         deferred_(8),
         osr_pc_offset_(-1),
-        resolver_(this) {
+        resolver_(this),
+        expected_safepoint_kind_(Safepoint::kSimple) {
     PopulateDeoptimizationLiteralsWithInlinedFunctions();
   }
 
@@ -151,12 +152,26 @@
   bool GenerateJumpTable();
   bool GenerateSafepointTable();
 
+  enum SafepointMode {
+    RECORD_SIMPLE_SAFEPOINT,
+    RECORD_SAFEPOINT_WITH_REGISTERS
+  };
+
+  void CallCodeGeneric(Handle<Code> code,
+                       RelocInfo::Mode mode,
+                       LInstruction* instr,
+                       SafepointMode safepoint_mode,
+                       int argc);
+
+
   void CallCode(Handle<Code> code,
                 RelocInfo::Mode mode,
                 LInstruction* instr);
+
   void CallRuntime(Runtime::Function* function,
                    int num_arguments,
                    LInstruction* instr);
+
   void CallRuntime(Runtime::FunctionId id,
                    int num_arguments,
                    LInstruction* instr) {
@@ -164,6 +179,11 @@
     CallRuntime(function, num_arguments, instr);
   }
 
+  void CallRuntimeFromDeferred(Runtime::FunctionId id,
+                               int argc,
+                               LInstruction* instr);
+
+
   // Generate a direct call to a known function.  Expects the function
   // to be in edi.
   void CallKnownFunction(Handle<JSFunction> function,
@@ -172,7 +192,9 @@
 
   void LoadHeapObject(Register result, Handle<HeapObject> object);
 
-  void RegisterLazyDeoptimization(LInstruction* instr);
+  void RegisterLazyDeoptimization(LInstruction* instr,
+                                  SafepointMode safepoint_mode,
+                                  int argc);
   void RegisterEnvironmentForDeoptimization(LEnvironment* environment);
   void DeoptimizeIf(Condition cc, LEnvironment* environment);
 
@@ -268,6 +290,27 @@
   // Compiler from a set of parallel moves to a sequential list of moves.
   LGapResolver resolver_;
 
+  Safepoint::Kind expected_safepoint_kind_;
+
+  class PushSafepointRegistersScope BASE_EMBEDDED {
+   public:
+    explicit PushSafepointRegistersScope(LCodeGen* codegen)
+        : codegen_(codegen) {
+      ASSERT(codegen_->expected_safepoint_kind_ == Safepoint::kSimple);
+      codegen_->masm_->PushSafepointRegisters();
+      codegen_->expected_safepoint_kind_ = Safepoint::kWithRegisters;
+    }
+
+    ~PushSafepointRegistersScope() {
+      ASSERT(codegen_->expected_safepoint_kind_ == Safepoint::kWithRegisters);
+      codegen_->masm_->PopSafepointRegisters();
+      codegen_->expected_safepoint_kind_ = Safepoint::kSimple;
+    }
+
+   private:
+    LCodeGen* codegen_;
+  };
+
   friend class LDeferredCode;
   friend class LEnvironment;
   friend class SafepointGenerator;