Preliminary support for block contexts in hydrogen.

src/x64/lithium-x64.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_X64_LITHIUM_X64_H_
 #define V8_X64_LITHIUM_X64_H_
 
 #include "src/hydrogen.h"
 #include "src/lithium-allocator.h"
 #include "src/lithium.h"
 #include "src/safepoint-table.h"
 #include "src/utils.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class LCodeGen;
 
 #define LITHIUM_CONCRETE_INSTRUCTION_LIST(V)    \
   V(AccessArgumentsAt)                          \
   V(AddI)                                       \
   V(Allocate)                                   \
+  V(AllocateBlockContext)                       \
   V(ApplyArguments)                             \
   V(ArgumentsElements)                          \
   V(ArgumentsLength)                            \
   V(ArithmeticD)                                \
   V(ArithmeticT)                                \
   V(BitI)                                       \
   V(BoundsCheck)                                \
   V(Branch)                                     \
   V(CallJSFunction)                             \
   V(CallWithDescriptor)                         \
@@ skipping 96 matching lines @@
   V(RegExpLiteral)                              \
   V(Return)                                     \
   V(SeqStringGetChar)                           \
   V(SeqStringSetChar)                           \
   V(ShiftI)                                     \
   V(SmiTag)                                     \
   V(SmiUntag)                                   \
   V(StackCheck)                                 \
   V(StoreCodeEntry)                             \
   V(StoreContextSlot)                           \
+  V(StoreFrameContext)                          \
   V(StoreGlobalCell)                            \
   V(StoreKeyed)                                 \
   V(StoreKeyedGeneric)                          \
   V(StoreNamedField)                            \
   V(StoreNamedGeneric)                          \
   V(StringAdd)                                  \
   V(StringCharCodeAt)                           \
   V(StringCharFromCode)                         \
   V(StringCompareAndBranch)                     \
   V(SubI)                                       \
@@ skipping 2470 matching lines @@
     inputs_[1] = index;
   }
 
   LOperand* object() { return inputs_[0]; }
   LOperand* index() { return inputs_[1]; }
 
   DECLARE_CONCRETE_INSTRUCTION(LoadFieldByIndex, "load-field-by-index")
 };
 
 
+class LStoreFrameContext: public LTemplateInstruction<0, 1, 0> {
+ public:
+  explicit LStoreFrameContext(LOperand* context) {
+    inputs_[0] = context;
+  }
+
+  LOperand* context() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StoreFrameContext, "store-frame-context")
+};
+
+
+class LAllocateBlockContext: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LAllocateBlockContext(LOperand* context, LOperand* function) {
+    inputs_[0] = context;
+    inputs_[1] = function;
+  }
+
+  LOperand* context() { return inputs_[0]; }
+  LOperand* function() { return inputs_[1]; }
+
+  Handle<ScopeInfo> scope_info() { return hydrogen()->scope_info(); }
+
+  DECLARE_CONCRETE_INSTRUCTION(AllocateBlockContext, "allocate-block-context")
+  DECLARE_HYDROGEN_ACCESSOR(AllocateBlockContext)
+};
+
+
 class LChunkBuilder;
 class LPlatformChunk V8_FINAL : public LChunk {
  public:
   LPlatformChunk(CompilationInfo* info, HGraph* graph)
       : LChunk(info, graph),
         dehoisted_key_ids_(graph->GetMaximumValueID(), graph->zone()) { }
 
   int GetNextSpillIndex(RegisterKind kind);
   LOperand* GetNextSpillSlot(RegisterKind kind);
   BitVector* GetDehoistedKeyIds() { return &dehoisted_key_ids_; }
@@ skipping 168 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::int
 
 #endif  // V8_X64_LITHIUM_X64_H_