ARM: Implement DoInstanceOfAndBranch in the lithium code generator.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6364007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6507 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/lithium-arm.cc

@@ -1028,8 +1028,8 @@ LInstruction* LChunkBuilder::DoTest(HTest* instr) {
     } else if (v->IsInstanceOf()) {
       HInstanceOf* instance_of = HInstanceOf::cast(v);
       LInstruction* result =
-          new LInstanceOfAndBranch(Use(instance_of->left()),
-                                   Use(instance_of->right()));
+          new LInstanceOfAndBranch(UseFixed(instance_of->left(), r0),
+                                   UseFixed(instance_of->right(), r1));
       return MarkAsCall(result, instr);
     } else if (v->IsTypeofIs()) {
       HTypeofIs* typeof_is = HTypeofIs::cast(v);

src/arm/lithium-codegen-arm.cc

@@ -1991,7 +1991,16 @@ void LCodeGen::DoInstanceOf(LInstanceOf* instr) {
 
 
 void LCodeGen::DoInstanceOfAndBranch(LInstanceOfAndBranch* instr) {
-  Abort("DoInstanceOfAndBranch unimplemented.");
+  ASSERT(ToRegister(instr->InputAt(0)).is(r0));  // Object is in r0.
+  ASSERT(ToRegister(instr->InputAt(1)).is(r1));  // Function is in r1.
+
+  int true_block = chunk_->LookupDestination(instr->true_block_id());
+  int false_block = chunk_->LookupDestination(instr->false_block_id());
+
+  InstanceofStub stub(InstanceofStub::kArgsInRegisters);
+  CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
+  __ tst(r0, Operand(r0));
+  EmitBranch(true_block, false_block, eq);
 }