| /* |
| * Copyright (c) 2013, 2014, 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 org.graalvm.compiler.lir.sparc; |
| |
| import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler; |
| import org.graalvm.compiler.lir.LIRInstruction; |
| import org.graalvm.compiler.lir.asm.CompilationResultBuilder; |
| |
| /** |
| * This interface is used for {@link LIRInstruction}s which provide a delay slot for one instruction |
| * from another {@link LIRInstruction}. |
| * |
| * @see SPARCTailDelayedLIRInstruction |
| */ |
| public interface SPARCDelayedControlTransfer { |
| |
| SPARCDelayedControlTransfer DUMMY = new SPARCDelayedControlTransfer() { |
| @Override |
| public void emitControlTransfer(CompilationResultBuilder crb, SPARCMacroAssembler masm) { |
| // do nothing |
| } |
| |
| @Override |
| public String toString() { |
| return "null"; |
| } |
| |
| @Override |
| public void resetState() { |
| } |
| }; |
| |
| /** |
| * This method must be called, to generate the control transfer, but without any Nop in the |
| * delay slot. |
| * |
| * @param crb |
| * @param masm |
| */ |
| void emitControlTransfer(CompilationResultBuilder crb, SPARCMacroAssembler masm); |
| |
| void resetState(); |
| } |