Add optimized compiler support for generic global loads....

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
===================================================================
--- src/arm/lithium-codegen-arm.cc	(revision 7145)
+++ src/arm/lithium-codegen-arm.cc	(working copy)
@@ -2098,6 +2098,18 @@
 }
 
 
+void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
+  ASSERT(ToRegister(instr->result()).is(r0));
+  __ ldr(r0, GlobalObjectOperand());
+  __ mov(r2, Operand(instr->hydrogen()->name()));
+  Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize));
+  RelocInfo::Mode mode = instr->hydrogen()->inside_typeof()
+      ? RelocInfo::CODE_TARGET
+      : RelocInfo::CODE_TARGET_CONTEXT;
+  CallCode(ic, mode, instr);
+}
+
+
 void LCodeGen::DoStoreGlobal(LStoreGlobal* instr) {
   Register value = ToRegister(instr->InputAt(0));
   Register scratch = scratch0();