1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package com.oracle.graal.lir.ptx; 24 25 import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; 26 27 import com.oracle.graal.api.meta.*; 28 import com.oracle.graal.asm.*; 29 import com.oracle.graal.asm.ptx.*; 30 import com.oracle.graal.lir.*; 31 import com.oracle.graal.lir.asm.*; 32 import com.oracle.graal.nodes.calc.*; 33 34 public class PTXControlFlow { 35 36 public static class ReturnOp extends PTXLIRInstruction { 37 38 @Use({REG, ILLEGAL}) protected Value x; 39 40 public ReturnOp(Value x) { 41 this.x = x; 42 } 43 44 @Override 45 public void emitCode(TargetMethodAssembler tasm, PTXAssembler masm) { 46 if (tasm.frameContext != null) { 47 tasm.frameContext.leave(tasm); 48 } 49 masm.exit(); 50 } 51 } 52 53 public static class BranchOp extends PTXLIRInstruction implements StandardOp.BranchOp { 54 55 protected Condition condition; 56 protected LabelRef destination; 57 58 public BranchOp(Condition condition, LabelRef destination) { 59 this.condition = condition; 60 this.destination = destination; 61 } 62 63 @Override 64 public void emitCode(TargetMethodAssembler tasm, PTXAssembler masm) { 65 masm.at(); 66 Label l = destination.label(); 67 l.addPatchAt(tasm.asm.codeBuffer.position()); 68 String target = l.isBound() ? "L" + l.toString() : AbstractPTXAssembler.UNBOUND_TARGET; 69 masm.bra(target); 70 } 71 72 @Override 73 public LabelRef destination() { 74 return destination; 75 } 76 77 @Override 78 public void negate(LabelRef newDestination) { 79 destination = newDestination; 80 condition = condition.negate(); 81 } 82 } 83 84 public static class CondMoveOp extends PTXLIRInstruction { 85 @Def({REG, HINT}) protected Value result; 86 @Alive({REG}) protected Value trueValue; 87 @Use({REG, STACK, CONST}) protected Value falseValue; 88 private final Condition condition; 89 90 public CondMoveOp(Variable result, Condition condition, Variable trueValue, Value falseValue) { 91 this.result = result; 92 this.condition = condition; 93 this.trueValue = trueValue; 94 this.falseValue = falseValue; 95 } 96 97 @Override 98 public void emitCode(TargetMethodAssembler tasm, PTXAssembler masm) { 99 // cmove(tasm, masm, result, false, condition, false, trueValue, falseValue); 100 // see 8.3 Predicated Execution p. 61 of PTX ISA 3.1 101 throw new InternalError("NYI"); 102 } 103 } 104 105 106 public static class FloatCondMoveOp extends PTXLIRInstruction { 107 @Def({REG}) protected Value result; 108 @Alive({REG}) protected Value trueValue; 109 @Alive({REG}) protected Value falseValue; 110 private final Condition condition; 111 private final boolean unorderedIsTrue; 112 113 public FloatCondMoveOp(Variable result, Condition condition, boolean unorderedIsTrue, Variable trueValue, Variable falseValue) { 114 this.result = result; 115 this.condition = condition; 116 this.unorderedIsTrue = unorderedIsTrue; 117 this.trueValue = trueValue; 118 this.falseValue = falseValue; 119 } 120 121 @Override 122 public void emitCode(TargetMethodAssembler tasm, PTXAssembler masm) { 123 // cmove(tasm, masm, result, true, condition, unorderedIsTrue, trueValue, falseValue); 124 // see 8.3 Predicated Execution p. 61 of PTX ISA 3.1 125 throw new InternalError("NYI"); 126 } 127 } 128 }