Merge 6006:6095 from bleeding_edge to experimental/gc branch.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
===================================================================
--- src/arm/lithium-codegen-arm.cc	(revision 6095)
+++ src/arm/lithium-codegen-arm.cc	(working copy)
@@ -1213,6 +1213,26 @@
 }
 
 
+Condition LCodeGen::EmitIsObject(Register input,
+                                 Register temp1,
+                                 Register temp2,
+                                 Label* is_not_object,
+                                 Label* is_object) {
+  Abort("EmitIsObject unimplemented.");
+  return ne;
+}
+
+
+void LCodeGen::DoIsObject(LIsObject* instr) {
+  Abort("DoIsObject unimplemented.");
+}
+
+
+void LCodeGen::DoIsObjectAndBranch(LIsObjectAndBranch* instr) {
+  Abort("DoIsObjectAndBranch unimplemented.");
+}
+
+
 void LCodeGen::DoIsSmi(LIsSmi* instr) {
   ASSERT(instr->hydrogen()->value()->representation().IsTagged());
   Register result = ToRegister(instr->result());
@@ -1317,7 +1337,14 @@
 
 
 void LCodeGen::DoInstanceOf(LInstanceOf* instr) {
-  Abort("DoInstanceOf unimplemented.");
+  // We expect object and function in registers r1 and r0.
+  InstanceofStub stub(InstanceofStub::kArgsInRegisters);
+  CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
+
+  Label true_value, done;
+  __ tst(r0, r0);
+  __ mov(r0, Operand(Factory::false_value()), LeaveCC, eq);
+  __ mov(r0, Operand(Factory::true_value()), LeaveCC, ne);
 }
 
 
@@ -1527,7 +1554,7 @@
 
 
 void LCodeGen::DoMathAbs(LUnaryMathOperation* instr) {
-  Abort("LUnaryMathOperation unimplemented.");
+  Abort("DoMathAbs unimplemented.");
 }
 
 
@@ -1542,9 +1569,6 @@
 
 
 void LCodeGen::DoUnaryMathOperation(LUnaryMathOperation* instr) {
-  ASSERT(instr->op() == kMathFloor ||
-         instr->op() == kMathAbs);
-
   switch (instr->op()) {
     case kMathAbs:
       DoMathAbs(instr);
@@ -1556,6 +1580,7 @@
       DoMathSqrt(instr);
       break;
     default:
+      Abort("Unimplemented type of LUnaryMathOperation.");
       UNREACHABLE();
   }
 }