Use a trampoline stub to load the type feedback vector for CallICs.

src/arm/code-stubs-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 2586 matching lines @@
   __ ldr(vector, FieldMemOperand(vector,
                                  JSFunction::kSharedFunctionInfoOffset));
   __ ldr(vector, FieldMemOperand(vector,
                                  SharedFunctionInfo::kFeedbackVectorOffset));
 }
 
 
 void CallIC_ArrayStub::Generate(MacroAssembler* masm) {
   // r1 - function
   // r3 - slot id
+  // r2 - vector
   Label miss;
   int argc = arg_count();
   ParameterCount actual(argc);
 
-  EmitLoadTypeFeedbackVector(masm, r2);
-
   __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, r4);
   __ cmp(r1, r4);
   __ b(ne, &miss);
 
   __ mov(r0, Operand(arg_count()));
   __ add(r4, r2, Operand::PointerOffsetFromSmiKey(r3));
   __ ldr(r4, FieldMemOperand(r4, FixedArray::kHeaderSize));
 
   // Verify that r4 contains an AllocationSite
   __ ldr(r5, FieldMemOperand(r4, HeapObject::kMapOffset));
@@ skipping 14 matching lines @@
                          CallAsMethod());
 
   // Unreachable.
   __ stop("Unexpected code address");
 }
 
 
 void CallICStub::Generate(MacroAssembler* masm) {
   // r1 - function
   // r3 - slot id (Smi)
+  // r2 - vector
   const int with_types_offset =
       FixedArray::OffsetOfElementAt(TypeFeedbackVector::kWithTypesIndex);
   const int generic_offset =
       FixedArray::OffsetOfElementAt(TypeFeedbackVector::kGenericCountIndex);
   Label extra_checks_or_miss, slow_start;
   Label slow, non_function, wrap, cont;
   Label have_js_function;
   int argc = arg_count();
   ParameterCount actual(argc);
 
-  EmitLoadTypeFeedbackVector(masm, r2);
-
   // The checks. First, does r1 match the recorded monomorphic target?
   __ add(r4, r2, Operand::PointerOffsetFromSmiKey(r3));
   __ ldr(r4, FieldMemOperand(r4, FixedArray::kHeaderSize));
   __ cmp(r1, r4);
   __ b(ne, &extra_checks_or_miss);
 
   __ bind(&have_js_function);
   if (CallAsMethod()) {
     EmitContinueIfStrictOrNative(masm, &cont);
     // Compute the receiver in sloppy mode.
@@ skipping 1576 matching lines @@
 }
 
 
 void KeyedLoadICTrampolineStub::Generate(MacroAssembler* masm) {
   EmitLoadTypeFeedbackVector(masm, VectorLoadICDescriptor::VectorRegister());
   VectorKeyedLoadStub stub(isolate());
   __ Jump(stub.GetCode(), RelocInfo::CODE_TARGET);
 }
 
 
+void CallICTrampolineStub::Generate(MacroAssembler* masm) {
+  EmitLoadTypeFeedbackVector(masm, r2);
+  CallICStub stub(isolate(), state());
+  __ Jump(stub.GetCode(), RelocInfo::CODE_TARGET);
+}
+
+
+void CallIC_ArrayTrampolineStub::Generate(MacroAssembler* masm) {
+  EmitLoadTypeFeedbackVector(masm, r2);
+  CallIC_ArrayStub stub(isolate(), state());
+  __ Jump(stub.GetCode(), RelocInfo::CODE_TARGET);
+}
+
+
 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
   if (masm->isolate()->function_entry_hook() != NULL) {
     ProfileEntryHookStub stub(masm->isolate());
     int code_size = masm->CallStubSize(&stub) + 2 * Assembler::kInstrSize;
     PredictableCodeSizeScope predictable(masm, code_size);
     __ push(lr);
     __ CallStub(&stub);
     __ pop(lr);
   }
 }
@@ skipping 666 matching lines @@
                            kStackUnwindSpace, NULL,
                            MemOperand(fp, 6 * kPointerSize), NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM