Remove HCallGlobal and merge uses with HCallNamed.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index c3fbba4e417488accef545c0749f58ca3947f905..0d7baeaf11b1ea85060c9d0e91c4ea26e62d45e7 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -3823,16 +3823,6 @@ void LCodeGen::DoCallFunction(LCallFunction* instr) {
 }
 
 
-void LCodeGen::DoCallGlobal(LCallGlobal* instr) {
-  ASSERT(ToRegister(instr->context()).is(rsi));
-  ASSERT(ToRegister(instr->result()).is(rax));
-  int arity = instr->arity();
-  Handle<Code> ic = isolate()->stub_cache()->ComputeCallInitialize(arity);
-  __ Move(rcx, instr->name());
-  CallCode(ic, RelocInfo::CODE_TARGET, instr);
-}
-
-
 void LCodeGen::DoCallKnownGlobal(LCallKnownGlobal* instr) {
   ASSERT(ToRegister(instr->result()).is(rax));
   CallKnownFunction(instr->hydrogen()->target(),