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

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
===================================================================
--- src/ia32/lithium-codegen-ia32.cc	(revision 5936)
+++ src/ia32/lithium-codegen-ia32.cc	(working copy)
@@ -1739,6 +1739,18 @@
 }
 
 
+void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
+  ASSERT(ToRegister(instr->result()).is(eax));
+  __ mov(eax, GlobalObjectOperand());
+  __ mov(ecx, 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->input());
   __ mov(Operand::Cell(instr->hydrogen()->cell()), value);