Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2             :  * vim: set ts=8 sts=4 et sw=4 tw=99:
       3             :  * This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "jit/BaselineIC.h"
       8             : #include "jit/SharedICHelpers.h"
       9             : #include "jit/MacroAssembler-inl.h"
      10             : 
      11             : using namespace js;
      12             : using namespace js::jit;
      13             : 
      14             : namespace js {
      15             : namespace jit {
      16             : 
      17             : // ICCompare_Int32
      18             : 
      19             : bool
      20         140 : ICCompare_Int32::Compiler::generateStubCode(MacroAssembler& masm)
      21             : {
      22             :     // Guard that R0 is an integer and R1 is an integer.
      23         280 :     Label failure;
      24         140 :     masm.branchTestInt32(Assembler::NotEqual, R0, &failure);
      25         140 :     masm.branchTestInt32(Assembler::NotEqual, R1, &failure);
      26             : 
      27             :     // Directly compare the int32 payload of R0 and R1.
      28         280 :     ScratchRegisterScope scratch(masm);
      29         140 :     Assembler::Condition cond = JSOpToCondition(op, /* signed = */true);
      30         140 :     masm.mov(ImmWord(0), scratch);
      31         140 :     masm.cmp32(R0.valueReg(), R1.valueReg());
      32         140 :     masm.setCC(cond, scratch);
      33             : 
      34             :     // Box the result and return
      35         140 :     masm.boxValue(JSVAL_TYPE_BOOLEAN, scratch, R0.valueReg());
      36         140 :     EmitReturnFromIC(masm);
      37             : 
      38             :     // Failure case - jump to next stub
      39         140 :     masm.bind(&failure);
      40         140 :     EmitStubGuardFailure(masm);
      41             : 
      42         280 :     return true;
      43             : }
      44             : 
      45             : } // namespace jit
      46             : } // namespace js