Mercurial > hg > graal-compiler
view graal/com.oracle.graal.lir.sparc/src/com/oracle/graal/lir/sparc/SPARCJumpOp.java @ 22231:a85ef0434dba
TypeCheckNode should fold obviously failing types
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Wed, 15 Jul 2015 09:49:14 -0700 |
parents | d9f3acb4a9a1 |
children | 13080797bccb |
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/* * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.lir.sparc; import static com.oracle.graal.asm.sparc.SPARCAssembler.Annul.*; import com.oracle.graal.asm.sparc.*; import com.oracle.graal.asm.sparc.SPARCAssembler.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.StandardOp.JumpOp; import com.oracle.graal.lir.asm.*; import com.oracle.graal.lir.sparc.SPARCLIRInstruction.*; public final class SPARCJumpOp extends JumpOp implements SPARCDelayedControlTransfer { public static final LIRInstructionClass<SPARCJumpOp> TYPE = LIRInstructionClass.create(SPARCJumpOp.class); public static final SizeEstimate SIZE = SizeEstimate.create(2); private boolean emitDone = false; private int delaySlotPosition = -1; public SPARCJumpOp(LabelRef destination) { super(TYPE, destination); } public void emitControlTransfer(CompilationResultBuilder crb, SPARCMacroAssembler masm) { assert !emitDone; if (!crb.isSuccessorEdge(destination())) { masm.bicc(ConditionFlag.Always, NOT_ANNUL, destination().label()); delaySlotPosition = masm.position(); } emitDone = true; } @Override public void emitCode(CompilationResultBuilder crb) { if (!crb.isSuccessorEdge(destination())) { if (!emitDone) { SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; masm.bicc(ConditionFlag.Always, NOT_ANNUL, destination().label()); masm.nop(); } else { int disp = crb.asm.position() - delaySlotPosition; assert disp == 4 : disp; } } } public static SizeEstimate getSize() { return SIZE; } public void resetState() { delaySlotPosition = -1; emitDone = false; } }