Merge Label and NearLabel

src/ia32/macro-assembler-ia32.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 466 matching lines @@
   STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
   pop(Operand::StaticVariable(handler_address));
   STATIC_ASSERT(StackHandlerConstants::kFPOffset == 1 * kPointerSize);
   pop(ebp);
   pop(edx);  // Remove state.
 
   // Before returning we restore the context from the frame pointer if
   // not NULL.  The frame pointer is NULL in the exception handler of
   // a JS entry frame.
   Set(esi, Immediate(0));  // Tentatively set context pointer to NULL.
-  NearLabel skip;
+  Label skip;
   cmp(ebp, 0);
-  j(equal, &skip, not_taken);
+  j(equal, &skip, Label::kNear, not_taken);
   mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
   bind(&skip);
 
   STATIC_ASSERT(StackHandlerConstants::kPCOffset == 3 * kPointerSize);
   ret(0);
 }
 
 
 void MacroAssembler::ThrowUncatchable(UncatchableExceptionType type,
                                       Register value) {
   // Adjust this code if not the case.
   STATIC_ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize);
 
   // eax must hold the exception.
   if (!value.is(eax)) {
     mov(eax, value);
   }
 
   // Drop sp to the top stack handler.
   ExternalReference handler_address(Isolate::k_handler_address,
                                     isolate());
   mov(esp, Operand::StaticVariable(handler_address));
 
   // Unwind the handlers until the ENTRY handler is found.
-  NearLabel loop, done;
+  Label loop, done;
   bind(&loop);
   // Load the type of the current stack handler.
   const int kStateOffset = StackHandlerConstants::kStateOffset;
   cmp(Operand(esp, kStateOffset), Immediate(StackHandler::ENTRY));
-  j(equal, &done);
+  j(equal, &done, Label::kNear);
   // Fetch the next handler in the list.
   const int kNextOffset = StackHandlerConstants::kNextOffset;
   mov(esp, Operand(esp, kNextOffset));
   jmp(&loop);
   bind(&done);
 
   // Set the top handler address to next handler past the current ENTRY handler.
   STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
   pop(Operand::StaticVariable(handler_address));
 
@@ skipping 50 matching lines @@
     push(scratch);
     // Read the first word and compare to global_context_map.
     mov(scratch, FieldOperand(scratch, HeapObject::kMapOffset));
     cmp(scratch, isolate()->factory()->global_context_map());
     Check(equal, "JSGlobalObject::global_context should be a global context.");
     pop(scratch);
   }
 
   // Check if both contexts are the same.
   cmp(scratch, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset));
-  j(equal, &same_contexts, taken);
+  j(equal, &same_contexts, Label::kFar, taken);
 
   // Compare security tokens, save holder_reg on the stack so we can use it
   // as a temporary register.
   //
   // TODO(119): avoid push(holder_reg)/pop(holder_reg)
   push(holder_reg);
   // Check that the security token in the calling global object is
   // compatible with the security token in the receiving global
   // object.
   mov(holder_reg, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset));
 
   // Check the context is a global context.
   if (emit_debug_code()) {
     cmp(holder_reg, isolate()->factory()->null_value());
     Check(not_equal, "JSGlobalProxy::context() should not be null.");
 
     push(holder_reg);
     // Read the first word and compare to global_context_map(),
     mov(holder_reg, FieldOperand(holder_reg, HeapObject::kMapOffset));
     cmp(holder_reg, isolate()->factory()->global_context_map());
     Check(equal, "JSGlobalObject::global_context should be a global context.");
     pop(holder_reg);
   }
 
   int token_offset = Context::kHeaderSize +
                      Context::SECURITY_TOKEN_INDEX * kPointerSize;
   mov(scratch, FieldOperand(scratch, token_offset));
   cmp(scratch, FieldOperand(holder_reg, token_offset));
   pop(holder_reg);
-  j(not_equal, miss, not_taken);
+  j(not_equal, miss, Label::kFar, not_taken);
 
   bind(&same_contexts);
 }
 
 
 void MacroAssembler::LoadAllocationTopHelper(Register result,
                                              Register scratch,
                                              AllocationFlags flags) {
   ExternalReference new_space_allocation_top =
       ExternalReference::new_space_allocation_top_address(isolate());
@@ skipping 67 matching lines @@
   Register top_reg = result_end.is_valid() ? result_end : result;
 
   // Calculate new top and bail out if new space is exhausted.
   ExternalReference new_space_allocation_limit =
       ExternalReference::new_space_allocation_limit_address(isolate());
 
   if (!top_reg.is(result)) {
     mov(top_reg, result);
   }
   add(Operand(top_reg), Immediate(object_size));
-  j(carry, gc_required, not_taken);
+  j(carry, gc_required, Label::kFar, not_taken);
   cmp(top_reg, Operand::StaticVariable(new_space_allocation_limit));
-  j(above, gc_required, not_taken);
+  j(above, gc_required, Label::kFar, not_taken);
 
   // Update allocation top.
   UpdateAllocationTopHelper(top_reg, scratch);
 
   // Tag result if requested.
   if (top_reg.is(result)) {
     if ((flags & TAG_OBJECT) != 0) {
       sub(Operand(result), Immediate(object_size - kHeapObjectTag));
     } else {
       sub(Operand(result), Immediate(object_size));
@@ skipping 76 matching lines @@
   // Load address of new object into result.
   LoadAllocationTopHelper(result, scratch, flags);
 
   // Calculate new top and bail out if new space is exhausted.
   ExternalReference new_space_allocation_limit =
       ExternalReference::new_space_allocation_limit_address(isolate());
   if (!object_size.is(result_end)) {
     mov(result_end, object_size);
   }
   add(result_end, Operand(result));
-  j(carry, gc_required, not_taken);
+  j(carry, gc_required, Label::kFar, not_taken);
   cmp(result_end, Operand::StaticVariable(new_space_allocation_limit));
-  j(above, gc_required, not_taken);
+  j(above, gc_required, Label::kFar, not_taken);
 
   // Tag result if requested.
   if ((flags & TAG_OBJECT) != 0) {
     lea(result, Operand(result, kHeapObjectTag));
   }
 
   // Update allocation top.
   UpdateAllocationTopHelper(result_end, scratch);
 }
 
@@ skipping 208 matching lines @@
 
   bind(&done);
 }
 
 
 void MacroAssembler::NegativeZeroTest(Register result,
                                       Register op,
                                       Label* then_label) {
   Label ok;
   test(result, Operand(result));
-  j(not_zero, &ok, taken);
+  j(not_zero, &ok, Label::kFar, taken);
   test(op, Operand(op));
-  j(sign, then_label, not_taken);
+  j(sign, then_label, Label::kFar, not_taken);
   bind(&ok);
 }
 
 
 void MacroAssembler::NegativeZeroTest(Register result,
                                       Register op1,
                                       Register op2,
                                       Register scratch,
                                       Label* then_label) {
   Label ok;
   test(result, Operand(result));
-  j(not_zero, &ok, taken);
+  j(not_zero, &ok, Label::kFar, taken);
   mov(scratch, Operand(op1));
   or_(scratch, Operand(op2));
-  j(sign, then_label, not_taken);
+  j(sign, then_label, Label::kFar, not_taken);
   bind(&ok);
 }
 
 
 void MacroAssembler::TryGetFunctionPrototype(Register function,
                                              Register result,
                                              Register scratch,
                                              Label* miss) {
   // Check that the receiver isn't a smi.
   test(function, Immediate(kSmiTagMask));
-  j(zero, miss, not_taken);
+  j(zero, miss, Label::kFar, not_taken);
 
   // Check that the function really is a function.
   CmpObjectType(function, JS_FUNCTION_TYPE, result);
-  j(not_equal, miss, not_taken);
+  j(not_equal, miss, Label::kFar, not_taken);
 
   // Make sure that the function has an instance prototype.
   Label non_instance;
   movzx_b(scratch, FieldOperand(result, Map::kBitFieldOffset));
   test(scratch, Immediate(1 << Map::kHasNonInstancePrototype));
-  j(not_zero, &non_instance, not_taken);
+  j(not_zero, &non_instance, Label::kFar, not_taken);
 
   // Get the prototype or initial map from the function.
   mov(result,
       FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset));
 
   // If the prototype or initial map is the hole, don't return it and
   // simply miss the cache instead. This will allow us to allocate a
   // prototype object on-demand in the runtime system.
   cmp(Operand(result), Immediate(isolate()->factory()->the_hole_value()));
-  j(equal, miss, not_taken);
+  j(equal, miss, Label::kFar, not_taken);
 
   // If the function does not have an initial map, we're done.
   Label done;
   CmpObjectType(result, MAP_TYPE, scratch);
   j(not_equal, &done);
 
   // Get the prototype from the initial map.
   mov(result, FieldOperand(result, Map::kPrototypeOffset));
   jmp(&done);
 
@@ skipping 260 matching lines @@
   }
 
   Label empty_handle;
   Label prologue;
   Label promote_scheduled_exception;
   Label delete_allocated_handles;
   Label leave_exit_frame;
 
   // Check if the result handle holds 0.
   test(eax, Operand(eax));
-  j(zero, &empty_handle, not_taken);
+  j(zero, &empty_handle, Label::kFar, not_taken);
   // It was non-zero.  Dereference to get the result value.
   mov(eax, Operand(eax, 0));
   bind(&prologue);
   // No more valid handles (the result handle was the last one). Restore
   // previous handle scope.
   mov(Operand::StaticVariable(next_address), ebx);
   sub(Operand::StaticVariable(level_address), Immediate(1));
   Assert(above_equal, "Invalid HandleScope level");
   cmp(edi, Operand::StaticVariable(limit_address));
-  j(not_equal, &delete_allocated_handles, not_taken);
+  j(not_equal, &delete_allocated_handles, Label::kFar, not_taken);
   bind(&leave_exit_frame);
 
   // Check if the function scheduled an exception.
   ExternalReference scheduled_exception_address =
       ExternalReference::scheduled_exception_address(isolate());
   cmp(Operand::StaticVariable(scheduled_exception_address),
       Immediate(isolate()->factory()->the_hole_value()));
-  j(not_equal, &promote_scheduled_exception, not_taken);
+  j(not_equal, &promote_scheduled_exception, Label::kFar, not_taken);
   LeaveApiExitFrame();
   ret(stack_space * kPointerSize);
   bind(&promote_scheduled_exception);
   MaybeObject* result =
       TryTailCallRuntime(Runtime::kPromoteScheduledException, 0, 1);
   if (result->IsFailure()) {
     return result;
   }
   bind(&empty_handle);
   // It was zero; the result is undefined.
@@ skipping 417 matching lines @@
         Immediate(factory->fixed_cow_array_map()));
     j(equal, &ok);
     Abort("JSObject with fast elements map has slow elements");
     bind(&ok);
   }
 }
 
 
 void MacroAssembler::Check(Condition cc, const char* msg) {
   Label L;
-  j(cc, &L, taken);
+  j(cc, &L, Label::kFar, taken);
   Abort(msg);
   // will not return here
   bind(&L);
 }
 
 
 void MacroAssembler::CheckStackAlignment() {
   int frame_alignment = OS::ActivationFrameAlignment();
   int frame_alignment_mask = frame_alignment - 1;
   if (frame_alignment > kPointerSize) {
@@ skipping 202 matching lines @@
 
   // Check that the code was patched as expected.
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32