Preliminary support for block contexts in hydrogen.

src/arm64/lithium-arm64.cc

Index: src/arm64/lithium-arm64.cc
diff --git a/src/arm64/lithium-arm64.cc b/src/arm64/lithium-arm64.cc
index bba65307401f4e8d1d21d02ab2977d81c5e5ceb8..8446edfae79fc88bb074131ffdabcba86a721788 100644
--- a/src/arm64/lithium-arm64.cc
+++ b/src/arm64/lithium-arm64.cc
@@ -2706,4 +2706,20 @@ LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoStoreFrameContext(HStoreFrameContext* instr) {
+  LOperand* context = UseRegisterAtStart(instr->context());
+  return new(zone()) LStoreFrameContext(context);
+}
+
+
+LInstruction* LChunkBuilder::DoAllocateBlockContext(
+    HAllocateBlockContext* instr) {
+  LOperand* context = UseFixed(instr->context(), cp);
+  LOperand* function = UseRegisterAtStart(instr->function());
+  LAllocateBlockContext* result =
+      new(zone()) LAllocateBlockContext(context, function);
+  return MarkAsCall(DefineFixed(result, cp), instr);
+}
+
+
 } }  // namespace v8::internal