Port the function prototype load stub to ARM.

Review URL: http://codereview.chromium.org/155373

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2430 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/ic-arm.cc

@@ -192,11 +192,14 @@ void LoadIC::GenerateFunctionPrototype(MacroAssembler* masm) {
   //  -- [sp]  : receiver
   // -----------------------------------
 
-  // NOTE: Right now, this code always misses on ARM which is
-  // sub-optimal. We should port the fast case code from IA-32.
+  Label miss;
+
+  // Load receiver.
+  __ ldr(r0, MemOperand(sp, 0));
 
-  Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Miss));
-  __ Jump(ic, RelocInfo::CODE_TARGET);
+  StubCompiler::GenerateLoadFunctionPrototype(masm, r0, r1, r3, &miss);
+  __ bind(&miss);
+  StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
 }
 
 

src/arm/stub-cache-arm.cc

@@ -247,6 +247,17 @@ void StubCompiler::GenerateLoadStringLength2(MacroAssembler* masm,
 }
 
 
+void StubCompiler::GenerateLoadFunctionPrototype(MacroAssembler* masm,
+                                                 Register receiver,
+                                                 Register scratch1,
+                                                 Register scratch2,
+                                                 Label* miss_label) {
+  __ TryGetFunctionPrototype(receiver, scratch1, scratch2, miss_label);
+  __ mov(r0, scratch1);
+  __ Ret();
+}
+
+
 // Generate StoreField code, value is passed in r0 register.
 // After executing generated code, the receiver_reg and name_reg
 // may be clobbered.