Revert r6088.

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 4a131465902fb76eaa86248c1feadbd5c37ecfe1..6effec1e3193933e52ce36b8b98dfd9c322644be 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -178,12 +178,6 @@ void MacroAssembler::Drop(int count, Condition cond) {
 }
 
 
-void MacroAssembler::Ret(int drop, Condition cond) {
-  Drop(drop, cond);
-  Ret(cond);
-}
-
-
 void MacroAssembler::Swap(Register reg1,
                           Register reg2,
                           Register scratch,
@@ -827,38 +821,6 @@ void MacroAssembler::InvokeFunction(JSFunction* function,
 }
 
 
-void MacroAssembler::IsObjectJSObjectType(Register heap_object,
-                                          Register map,
-                                          Register scratch,
-                                          Label* fail) {
-  ldr(map, FieldMemOperand(heap_object, HeapObject::kMapOffset));
-  IsInstanceJSObjectType(map, scratch, fail);
-}
-
-
-void MacroAssembler::IsInstanceJSObjectType(Register map,
-                                            Register scratch,
-                                            Label* fail) {
-  ldrb(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
-  cmp(scratch, Operand(FIRST_JS_OBJECT_TYPE));
-  b(lt, fail);
-  cmp(scratch, Operand(LAST_JS_OBJECT_TYPE));
-  b(gt, fail);
-}
-
-
-void MacroAssembler::IsObjectJSStringType(Register object,
-                                           Register scratch,
-                                           Label* fail) {
-  ASSERT(kNotStringTag != 0);
-
-  ldr(scratch, FieldMemOperand(object, HeapObject::kMapOffset));
-  ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset));
-  tst(scratch, Operand(kIsNotStringMask));
-  b(nz, fail);
-}
-
-
 #ifdef ENABLE_DEBUGGER_SUPPORT
 void MacroAssembler::DebugBreak() {
   ASSERT(allow_stub_calls());