Mercurial > hg > graal-jvmci-8
annotate graal/Compiler/src/com/sun/c1x/target/amd64/AMD64LIRGenerator.java @ 2507:9ec15d6914ca
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author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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2507
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1 /* |
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2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 package com.sun.c1x.target.amd64; |
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25 |
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26 import static com.sun.cri.bytecode.Bytecodes.UnsignedComparisons.*; |
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27 |
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28 import com.sun.c1x.*; |
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29 import com.sun.c1x.alloc.OperandPool.VariableFlag; |
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30 import com.sun.c1x.gen.*; |
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31 import com.sun.c1x.globalstub.*; |
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32 import com.sun.c1x.ir.*; |
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33 import com.sun.c1x.lir.*; |
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34 import com.sun.c1x.util.*; |
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35 import com.sun.cri.bytecode.*; |
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36 import com.sun.cri.ci.*; |
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37 |
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38 /** |
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39 * This class implements the X86-specific portion of the LIR generator. |
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40 * |
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41 * @author Thomas Wuerthinger |
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42 * @author Ben L. Titzer |
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43 */ |
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44 public class AMD64LIRGenerator extends LIRGenerator { |
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45 |
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46 private static final CiRegisterValue RAX_I = AMD64.rax.asValue(CiKind.Int); |
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47 private static final CiRegisterValue RAX_L = AMD64.rax.asValue(CiKind.Long); |
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48 private static final CiRegisterValue RAX_W = AMD64.rax.asValue(CiKind.Word); |
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49 private static final CiRegisterValue RDX_I = AMD64.rdx.asValue(CiKind.Int); |
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50 private static final CiRegisterValue RDX_L = AMD64.rdx.asValue(CiKind.Long); |
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51 |
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52 private static final CiRegisterValue LDIV_TMP = RDX_L; |
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53 |
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54 |
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55 /** |
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56 * The register in which MUL puts the result for 64-bit multiplication. |
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57 */ |
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58 private static final CiRegisterValue LMUL_OUT = RAX_L; |
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59 |
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60 private static final CiRegisterValue SHIFT_COUNT_IN = AMD64.rcx.asValue(CiKind.Int); |
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61 |
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62 protected static final CiValue ILLEGAL = CiValue.IllegalValue; |
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63 |
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64 public AMD64LIRGenerator(C1XCompilation compilation) { |
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65 super(compilation); |
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66 } |
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67 |
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68 @Override |
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69 protected CiValue exceptionPcOpr() { |
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70 return ILLEGAL; |
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71 } |
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72 |
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73 @Override |
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74 protected boolean canStoreAsConstant(Value v, CiKind kind) { |
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75 if (kind == CiKind.Short || kind == CiKind.Char) { |
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76 // there is no immediate move of word values in asemblerI486.?pp |
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77 return false; |
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78 } |
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79 return v instanceof Constant; |
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80 } |
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81 |
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82 @Override |
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83 protected boolean canInlineAsConstant(Value v) { |
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84 if (v.kind == CiKind.Long) { |
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85 if (v.isConstant() && Util.isInt(v.asConstant().asLong())) { |
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86 return true; |
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87 } |
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88 return false; |
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89 } |
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90 return v.kind != CiKind.Object || v.isNullConstant(); |
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91 } |
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92 |
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93 @Override |
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94 protected CiAddress genAddress(CiValue base, CiValue index, int shift, int disp, CiKind kind) { |
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95 assert base.isVariableOrRegister(); |
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96 if (index.isConstant()) { |
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97 return new CiAddress(kind, base, (((CiConstant) index).asInt() << shift) + disp); |
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98 } else { |
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99 assert index.isVariableOrRegister(); |
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100 return new CiAddress(kind, base, (index), CiAddress.Scale.fromShift(shift), disp); |
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101 } |
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102 } |
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103 |
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104 @Override |
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105 protected void genCmpMemInt(Condition condition, CiValue base, int disp, int c, LIRDebugInfo info) { |
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106 lir.cmpMemInt(condition, base, disp, c, info); |
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107 } |
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108 |
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109 @Override |
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110 protected void genCmpRegMem(Condition condition, CiValue reg, CiValue base, int disp, CiKind kind, LIRDebugInfo info) { |
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111 lir.cmpRegMem(condition, reg, new CiAddress(kind, base, disp), info); |
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112 } |
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113 |
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114 @Override |
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115 protected boolean strengthReduceMultiply(CiValue left, int c, CiValue result, CiValue tmp) { |
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116 if (tmp.isLegal()) { |
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117 if (CiUtil.isPowerOf2(c + 1)) { |
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118 lir.move(left, tmp); |
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119 lir.shiftLeft(left, CiUtil.log2(c + 1), left); |
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120 lir.sub(left, tmp, result); |
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121 return true; |
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122 } else if (CiUtil.isPowerOf2(c - 1)) { |
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123 lir.move(left, tmp); |
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124 lir.shiftLeft(left, CiUtil.log2(c - 1), left); |
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125 lir.add(left, tmp, result); |
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126 return true; |
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127 } |
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128 } |
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129 return false; |
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130 } |
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131 |
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132 @Override |
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133 public void visitNegateOp(NegateOp x) { |
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134 LIRItem value = new LIRItem(x.x(), this); |
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135 value.setDestroysRegister(); |
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136 value.loadItem(); |
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137 CiVariable reg = newVariable(x.kind); |
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138 GlobalStub globalStub = null; |
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139 if (x.kind == CiKind.Float) { |
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140 globalStub = stubFor(GlobalStub.Id.fneg); |
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141 } else if (x.kind == CiKind.Double) { |
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142 globalStub = stubFor(GlobalStub.Id.dneg); |
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143 } |
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144 lir.negate(value.result(), reg, globalStub); |
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145 setResult(x, reg); |
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146 } |
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147 |
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148 @Override |
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149 public void visitSignificantBit(SignificantBitOp x) { |
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150 LIRItem value = new LIRItem(x.value(), this); |
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151 value.setDestroysRegister(); |
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152 value.loadItem(); |
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153 CiValue reg = createResultVariable(x); |
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154 if (x.op == Bytecodes.LSB) { |
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155 lir.lsb(value.result(), reg); |
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156 } else { |
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157 lir.msb(value.result(), reg); |
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158 } |
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159 } |
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160 |
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161 public boolean livesLonger(Value x, Value y) { |
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162 BlockBegin bx = x.block(); |
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163 BlockBegin by = y.block(); |
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164 if (bx == null || by == null) { |
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165 return false; |
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166 } |
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167 return bx.loopDepth() < by.loopDepth(); |
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168 } |
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169 |
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170 public void visitArithmeticOpFloat(ArithmeticOp x) { |
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171 LIRItem left = new LIRItem(x.x(), this); |
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172 LIRItem right = new LIRItem(x.y(), this); |
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173 assert !left.isStack() || !right.isStack() : "can't both be memory operands"; |
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174 boolean mustLoadBoth = (x.opcode == Bytecodes.FREM || x.opcode == Bytecodes.DREM); |
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175 |
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176 // Both are in register, swap operands such that the short-living one is on the left side. |
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177 if (x.isCommutative() && left.isRegisterOrVariable() && right.isRegisterOrVariable()) { |
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178 if (livesLonger(x.x(), x.y())) { |
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179 LIRItem tmp = left; |
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180 left = right; |
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181 right = tmp; |
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182 } |
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183 } |
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184 |
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185 if (left.isRegisterOrVariable() || x.x().isConstant() || mustLoadBoth) { |
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186 left.loadItem(); |
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187 } |
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188 |
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189 if (mustLoadBoth) { |
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190 // frem and drem destroy also right operand, so move it to a new register |
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191 right.setDestroysRegister(); |
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192 right.loadItem(); |
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193 } else if (right.isRegisterOrVariable()) { |
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194 right.loadItem(); |
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195 } |
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196 |
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197 CiVariable reg; |
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198 |
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199 if (x.opcode == Bytecodes.FREM) { |
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200 reg = callRuntimeWithResult(CiRuntimeCall.ArithmeticFrem, null, left.result(), right.result()); |
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201 } else if (x.opcode == Bytecodes.DREM) { |
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202 reg = callRuntimeWithResult(CiRuntimeCall.ArithmeticDrem, null, left.result(), right.result()); |
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203 } else { |
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204 reg = newVariable(x.kind); |
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205 arithmeticOpFpu(x.opcode, reg, left.result(), right.result(), ILLEGAL); |
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206 } |
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207 |
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208 setResult(x, reg); |
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209 } |
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210 |
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211 public void visitArithmeticOpLong(ArithmeticOp x) { |
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212 int opcode = x.opcode; |
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213 if (opcode == Bytecodes.LDIV || opcode == Bytecodes.LREM) { |
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214 // emit inline 64-bit code |
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215 LIRDebugInfo info = x.needsZeroCheck() ? stateFor(x) : null; |
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216 CiValue dividend = force(x.x(), RAX_L); // dividend must be in RAX |
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217 CiValue divisor = load(x.y()); // divisor can be in any (other) register |
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218 |
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219 CiValue result = createResultVariable(x); |
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220 CiValue resultReg; |
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221 if (opcode == Bytecodes.LREM) { |
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222 resultReg = RDX_L; // remainder result is produced in rdx |
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223 lir.lrem(dividend, divisor, resultReg, LDIV_TMP, info); |
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224 } else { |
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225 resultReg = RAX_L; // division result is produced in rax |
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226 lir.ldiv(dividend, divisor, resultReg, LDIV_TMP, info); |
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227 } |
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228 |
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229 lir.move(resultReg, result); |
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230 } else if (opcode == Bytecodes.LMUL) { |
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231 LIRItem right = new LIRItem(x.y(), this); |
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232 |
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233 // right register is destroyed by the long mul, so it must be |
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234 // copied to a new register. |
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235 right.setDestroysRegister(); |
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236 |
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237 CiValue left = load(x.x()); |
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238 right.loadItem(); |
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239 |
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240 arithmeticOpLong(opcode, LMUL_OUT, left, right.result(), null); |
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241 CiValue result = createResultVariable(x); |
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242 lir.move(LMUL_OUT, result); |
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243 } else { |
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244 LIRItem right = new LIRItem(x.y(), this); |
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245 |
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246 CiValue left = load(x.x()); |
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247 // don't load constants to save register |
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248 right.loadNonconstant(); |
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249 createResultVariable(x); |
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250 arithmeticOpLong(opcode, x.operand(), left, right.result(), null); |
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251 } |
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252 } |
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253 |
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254 public void visitArithmeticOpInt(ArithmeticOp x) { |
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255 int opcode = x.opcode; |
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256 if (opcode == Bytecodes.IDIV || opcode == Bytecodes.IREM) { |
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257 // emit code for integer division or modulus |
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258 |
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259 // Call 'stateFor' before 'force()' because 'stateFor()' may |
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260 // force the evaluation of other instructions that are needed for |
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261 // correct debug info. Otherwise the live range of the fixed |
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262 // register might be too long. |
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263 LIRDebugInfo info = x.needsZeroCheck() ? stateFor(x) : null; |
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264 |
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265 CiValue dividend = force(x.x(), RAX_I); // dividend must be in RAX |
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266 CiValue divisor = load(x.y()); // divisor can be in any (other) register |
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267 |
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268 // idiv and irem use rdx in their implementation so the |
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269 // register allocator must not assign it to an interval that overlaps |
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270 // this division instruction. |
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271 CiRegisterValue tmp = RDX_I; |
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272 |
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273 CiValue result = createResultVariable(x); |
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274 CiValue resultReg; |
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275 if (opcode == Bytecodes.IREM) { |
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276 resultReg = tmp; // remainder result is produced in rdx |
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277 lir.irem(dividend, divisor, resultReg, tmp, info); |
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278 } else { |
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279 resultReg = RAX_I; // division result is produced in rax |
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280 lir.idiv(dividend, divisor, resultReg, tmp, info); |
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281 } |
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282 |
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283 lir.move(resultReg, result); |
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284 } else { |
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285 // emit code for other integer operations |
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286 LIRItem left = new LIRItem(x.x(), this); |
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287 LIRItem right = new LIRItem(x.y(), this); |
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288 LIRItem leftArg = left; |
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289 LIRItem rightArg = right; |
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290 if (x.isCommutative() && left.isStack() && right.isRegisterOrVariable()) { |
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291 // swap them if left is real stack (or cached) and right is real register(not cached) |
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292 leftArg = right; |
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293 rightArg = left; |
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294 } |
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295 |
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296 leftArg.loadItem(); |
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297 |
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298 // do not need to load right, as we can handle stack and constants |
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299 if (opcode == Bytecodes.IMUL) { |
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300 // check if we can use shift instead |
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301 boolean useConstant = false; |
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302 boolean useTmp = false; |
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303 if (rightArg.result().isConstant()) { |
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304 int iconst = rightArg.instruction.asConstant().asInt(); |
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305 if (iconst > 0) { |
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306 if (CiUtil.isPowerOf2(iconst)) { |
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307 useConstant = true; |
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308 } else if (CiUtil.isPowerOf2(iconst - 1) || CiUtil.isPowerOf2(iconst + 1)) { |
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309 useConstant = true; |
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310 useTmp = true; |
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311 } |
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312 } |
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313 } |
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314 if (!useConstant) { |
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315 rightArg.loadItem(); |
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316 } |
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317 CiValue tmp = ILLEGAL; |
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318 if (useTmp) { |
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319 tmp = newVariable(CiKind.Int); |
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320 } |
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321 createResultVariable(x); |
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322 |
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323 arithmeticOpInt(opcode, x.operand(), leftArg.result(), rightArg.result(), tmp); |
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324 } else { |
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325 createResultVariable(x); |
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326 CiValue tmp = ILLEGAL; |
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327 arithmeticOpInt(opcode, x.operand(), leftArg.result(), rightArg.result(), tmp); |
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328 } |
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329 } |
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330 } |
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331 |
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332 public void visitArithmeticOpWord(ArithmeticOp x) { |
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333 int opcode = x.opcode; |
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334 if (opcode == Bytecodes.WDIV || opcode == Bytecodes.WREM || opcode == Bytecodes.WDIVI || opcode == Bytecodes.WREMI) { |
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335 // emit code for long division or modulus |
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336 // emit inline 64-bit code |
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337 LIRDebugInfo info = x.needsZeroCheck() ? stateFor(x) : null; |
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338 CiValue dividend = force(x.x(), RAX_L); // dividend must be in RAX |
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339 CiValue divisor = load(x.y()); // divisor can be in any (other) register |
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340 |
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341 CiValue result = createResultVariable(x); |
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342 CiValue resultReg; |
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343 if (opcode == Bytecodes.WREM) { |
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344 resultReg = RDX_L; // remainder result is produced in rdx |
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345 lir.wrem(dividend, divisor, resultReg, LDIV_TMP, info); |
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346 } else if (opcode == Bytecodes.WREMI) { |
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347 resultReg = RDX_L; // remainder result is produced in rdx |
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348 lir.wremi(dividend, divisor, resultReg, LDIV_TMP, info); |
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349 } else if (opcode == Bytecodes.WDIV) { |
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350 resultReg = RAX_L; // division result is produced in rax |
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351 lir.wdiv(dividend, divisor, resultReg, LDIV_TMP, info); |
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352 } else { |
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353 assert opcode == Bytecodes.WDIVI; |
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354 resultReg = RAX_L; // division result is produced in rax |
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355 lir.wdivi(dividend, divisor, resultReg, LDIV_TMP, info); |
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356 } |
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357 |
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358 lir.move(resultReg, result); |
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359 } else if (opcode == Bytecodes.LMUL) { |
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360 LIRItem right = new LIRItem(x.y(), this); |
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361 |
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362 // right register is destroyed by the long mul, so it must be |
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363 // copied to a new register. |
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364 right.setDestroysRegister(); |
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365 |
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366 CiValue left = load(x.x()); |
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367 right.loadItem(); |
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368 |
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369 CiValue reg = LMUL_OUT; |
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370 arithmeticOpLong(opcode, reg, left, right.result(), null); |
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371 CiValue result = createResultVariable(x); |
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372 lir.move(reg, result); |
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373 } else { |
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374 LIRItem right = new LIRItem(x.y(), this); |
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375 |
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376 CiValue left = load(x.x()); |
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377 // don't load constants to save register |
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378 right.loadNonconstant(); |
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379 createResultVariable(x); |
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380 arithmeticOpLong(opcode, x.operand(), left, right.result(), null); |
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381 } |
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382 } |
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383 |
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384 @Override |
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385 public void visitArithmeticOp(ArithmeticOp x) { |
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386 trySwap(x); |
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387 |
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388 if (x.kind.isWord() || x.opcode == Bytecodes.WREMI) { |
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389 visitArithmeticOpWord(x); |
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390 return; |
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391 } |
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392 |
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393 assert Util.archKindsEqual(x.x().kind, x.kind) && Util.archKindsEqual(x.y().kind, x.kind) : "wrong parameter types: " + Bytecodes.nameOf(x.opcode); |
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394 switch (x.kind) { |
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395 case Float: |
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396 case Double: |
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397 visitArithmeticOpFloat(x); |
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398 return; |
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399 case Long: |
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400 visitArithmeticOpLong(x); |
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401 return; |
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402 case Int: |
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403 visitArithmeticOpInt(x); |
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404 return; |
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405 } |
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406 throw Util.shouldNotReachHere(); |
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407 } |
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408 |
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409 @Override |
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410 public void visitShiftOp(ShiftOp x) { |
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411 // count must always be in rcx |
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412 CiValue count = makeOperand(x.y()); |
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413 boolean mustLoadCount = !count.isConstant() || x.kind == CiKind.Long; |
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414 if (mustLoadCount) { |
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415 // count for long must be in register |
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416 count = force(x.y(), SHIFT_COUNT_IN); |
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417 } |
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418 |
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419 CiValue value = load(x.x()); |
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420 CiValue reg = createResultVariable(x); |
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421 |
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422 shiftOp(x.opcode, reg, value, count, ILLEGAL); |
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423 } |
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424 |
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425 @Override |
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426 public void visitLogicOp(LogicOp x) { |
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427 trySwap(x); |
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428 |
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429 LIRItem right = new LIRItem(x.y(), this); |
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430 |
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431 CiValue left = load(x.x()); |
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432 right.loadNonconstant(); |
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433 CiValue reg = createResultVariable(x); |
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434 |
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435 logicOp(x.opcode, reg, left, right.result()); |
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436 } |
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437 |
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438 private void trySwap(Op2 x) { |
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439 // (tw) TODO: Check what this is for? |
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440 } |
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441 |
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442 @Override |
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443 public void visitCompareOp(CompareOp x) { |
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444 LIRItem left = new LIRItem(x.x(), this); |
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445 LIRItem right = new LIRItem(x.y(), this); |
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446 if (!x.kind.isVoid() && x.x().kind.isLong()) { |
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447 left.setDestroysRegister(); |
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448 } |
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449 left.loadItem(); |
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450 right.loadItem(); |
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451 |
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452 if (x.kind.isVoid()) { |
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453 lir.cmp(Condition.TRUE, left.result(), right.result()); |
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454 } else if (x.x().kind.isFloat() || x.x().kind.isDouble()) { |
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455 CiValue reg = createResultVariable(x); |
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456 int code = x.opcode; |
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457 lir.fcmp2int(left.result(), right.result(), reg, (code == Bytecodes.FCMPL || code == Bytecodes.DCMPL)); |
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458 } else if (x.x().kind.isLong() || x.x().kind.isWord()) { |
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459 CiValue reg = createResultVariable(x); |
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460 lir.lcmp2int(left.result(), right.result(), reg); |
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461 } else { |
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462 Util.unimplemented(); |
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463 } |
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464 } |
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465 |
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466 @Override |
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467 public void visitUnsignedCompareOp(UnsignedCompareOp x) { |
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468 LIRItem left = new LIRItem(x.x(), this); |
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469 LIRItem right = new LIRItem(x.y(), this); |
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470 left.loadItem(); |
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471 right.loadItem(); |
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472 Condition condition = null; |
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473 switch (x.op) { |
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474 case BELOW_THAN : condition = Condition.BT; break; |
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475 case ABOVE_THAN : condition = Condition.AT; break; |
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476 case BELOW_EQUAL : condition = Condition.BE; break; |
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477 case ABOVE_EQUAL : condition = Condition.AE; break; |
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478 default: |
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479 Util.unimplemented(); |
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480 } |
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481 CiValue result = createResultVariable(x); |
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482 lir.cmp(condition, left.result(), right.result()); |
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483 lir.cmove(condition, CiConstant.INT_1, CiConstant.INT_0, result); |
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484 } |
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485 |
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486 @Override |
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487 public void visitCompareAndSwap(CompareAndSwap x) { |
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488 |
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489 // (tw) TODO: Factor out common code with genCompareAndSwap. |
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490 |
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491 CiKind dataKind = x.dataKind; |
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492 CiValue tempPointer = load(x.pointer()); |
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493 CiAddress addr = getAddressForPointerOp(x, dataKind, tempPointer); |
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494 |
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495 CiValue expectedValue = force(x.expectedValue(), AMD64.rax.asValue(dataKind)); |
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496 CiValue newValue = load(x.newValue()); |
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497 assert Util.archKindsEqual(newValue.kind, dataKind) : "invalid type"; |
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498 |
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499 if (dataKind.isObject()) { // Write-barrier needed for Object fields. |
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500 // Do the pre-write barrier : if any. |
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501 preGCWriteBarrier(addr, false, null); |
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502 } |
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503 |
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504 CiValue pointer = newVariable(CiKind.Word); |
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505 lir.lea(addr, pointer); |
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506 CiValue result = createResultVariable(x); |
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507 CiValue resultReg = AMD64.rax.asValue(dataKind); |
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508 if (dataKind.isObject()) { |
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509 lir.casObj(pointer, expectedValue, newValue); |
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510 } else if (dataKind.isInt()) { |
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511 lir.casInt(pointer, expectedValue, newValue); |
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512 } else { |
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513 assert dataKind.isLong() || dataKind.isWord(); |
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514 lir.casLong(pointer, expectedValue, newValue); |
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515 } |
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516 |
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517 lir.move(resultReg, result); |
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518 |
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519 if (dataKind.isObject()) { // Write-barrier needed for Object fields. |
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520 // Seems to be precise |
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521 postGCWriteBarrier(pointer, newValue); |
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522 } |
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523 } |
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524 |
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525 @Override |
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526 protected void genCompareAndSwap(Intrinsic x, CiKind kind) { |
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527 assert x.numberOfArguments() == 5 : "wrong number of arguments: " + x.numberOfArguments(); |
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528 // Argument 0 is the receiver. |
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529 LIRItem obj = new LIRItem(x.argumentAt(1), this); // object |
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530 LIRItem offset = new LIRItem(x.argumentAt(2), this); // offset of field |
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531 LIRItem val = new LIRItem(x.argumentAt(4), this); // replace field with val if matches cmp |
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532 |
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533 assert obj.instruction.kind.isObject() : "invalid type"; |
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534 |
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535 assert val.instruction.kind == kind : "invalid type"; |
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536 |
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537 // get address of field |
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538 obj.loadItem(); |
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539 offset.loadNonconstant(); |
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540 CiAddress addr; |
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541 if (offset.result().isConstant()) { |
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542 addr = new CiAddress(kind, obj.result(), (int) ((CiConstant) offset.result()).asLong()); |
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543 } else { |
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544 addr = new CiAddress(kind, obj.result(), offset.result()); |
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545 } |
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546 |
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547 // Compare operand needs to be in RAX. |
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548 CiValue cmp = force(x.argumentAt(3), AMD64.rax.asValue(kind)); |
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549 val.loadItem(); |
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|
550 |
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551 CiValue pointer = newVariable(CiKind.Word); |
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552 lir.lea(addr, pointer); |
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553 |
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554 if (kind.isObject()) { // Write-barrier needed for Object fields. |
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555 // Do the pre-write barrier : if any. |
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556 preGCWriteBarrier(pointer, false, null); |
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557 } |
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558 |
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559 if (kind.isObject()) { |
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560 lir.casObj(pointer, cmp, val.result()); |
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561 } else if (kind.isInt()) { |
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562 lir.casInt(pointer, cmp, val.result()); |
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563 } else if (kind.isLong()) { |
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564 lir.casLong(pointer, cmp, val.result()); |
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565 } else { |
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|
566 Util.shouldNotReachHere(); |
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567 } |
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|
568 |
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diff
changeset
|
569 // generate conditional move of boolean result |
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570 CiValue result = createResultVariable(x); |
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571 lir.cmove(Condition.EQ, CiConstant.INT_1, CiConstant.INT_0, result); |
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572 if (kind.isObject()) { // Write-barrier needed for Object fields. |
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573 // Seems to be precise |
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574 postGCWriteBarrier(pointer, val.result()); |
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575 } |
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576 } |
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|
577 |
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578 @Override |
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579 protected void genMathIntrinsic(Intrinsic x) { |
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580 assert x.numberOfArguments() == 1 : "wrong type"; |
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581 |
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582 CiValue calcInput = load(x.argumentAt(0)); |
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583 |
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584 switch (x.intrinsic()) { |
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585 case java_lang_Math$abs: |
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586 lir.abs(calcInput, createResultVariable(x), ILLEGAL); |
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587 break; |
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|
588 case java_lang_Math$sqrt: |
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|
589 lir.sqrt(calcInput, createResultVariable(x), ILLEGAL); |
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590 break; |
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parents:
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|
591 case java_lang_Math$sin: |
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592 setResult(x, callRuntimeWithResult(CiRuntimeCall.ArithmeticSin, null, calcInput)); |
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593 break; |
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594 case java_lang_Math$cos: |
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595 setResult(x, callRuntimeWithResult(CiRuntimeCall.ArithmeticCos, null, calcInput)); |
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|
596 break; |
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|
597 case java_lang_Math$tan: |
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598 setResult(x, callRuntimeWithResult(CiRuntimeCall.ArithmeticTan, null, calcInput)); |
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599 break; |
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600 case java_lang_Math$log: |
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601 setResult(x, callRuntimeWithResult(CiRuntimeCall.ArithmeticLog, null, calcInput)); |
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602 break; |
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603 case java_lang_Math$log10: |
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604 setResult(x, callRuntimeWithResult(CiRuntimeCall.ArithmeticLog10, null, calcInput)); |
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parents:
diff
changeset
|
605 break; |
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diff
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|
606 default: |
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|
607 Util.shouldNotReachHere("Unknown math intrinsic"); |
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|
608 } |
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parents:
diff
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|
609 } |
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parents:
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|
610 |
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|
611 @Override |
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612 public void visitConvert(Convert x) { |
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613 CiValue input = load(x.value()); |
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614 CiVariable result = newVariable(x.kind); |
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615 // arguments of lirConvert |
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616 GlobalStub globalStub = null; |
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617 switch (x.opcode) { |
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618 case Bytecodes.F2I: globalStub = stubFor(GlobalStub.Id.f2i); break; |
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619 case Bytecodes.F2L: globalStub = stubFor(GlobalStub.Id.f2l); break; |
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620 case Bytecodes.D2I: globalStub = stubFor(GlobalStub.Id.d2i); break; |
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621 case Bytecodes.D2L: globalStub = stubFor(GlobalStub.Id.d2l); break; |
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622 } |
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623 if (globalStub != null) { |
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624 // Force result to be rax to match global stubs expectation. |
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625 CiValue stubResult = x.kind == CiKind.Int ? RAX_I : RAX_L; |
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626 lir.convert(x.opcode, input, stubResult, globalStub); |
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627 lir.move(stubResult, result); |
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628 } else { |
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629 lir.convert(x.opcode, input, result, globalStub); |
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630 } |
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631 setResult(x, result); |
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632 } |
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|
633 |
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634 @Override |
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635 public void visitBlockBegin(BlockBegin x) { |
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636 // nothing to do for now |
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637 } |
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|
638 |
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639 @Override |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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640 public void visitIf(If x) { |
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641 CiKind kind = x.x().kind; |
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642 |
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643 Condition cond = x.condition(); |
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Pull over of compiler from maxine repository.
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644 |
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645 LIRItem xitem = new LIRItem(x.x(), this); |
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646 LIRItem yitem = new LIRItem(x.y(), this); |
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647 LIRItem xin = xitem; |
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648 LIRItem yin = yitem; |
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diff
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649 |
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650 if (kind.isLong()) { |
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|
651 // for longs, only conditions "eql", "neq", "lss", "geq" are valid; |
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652 // mirror for other conditions |
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653 if (cond == Condition.GT || cond == Condition.LE) { |
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654 cond = cond.mirror(); |
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655 xin = yitem; |
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656 yin = xitem; |
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|
657 } |
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658 xin.setDestroysRegister(); |
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659 } |
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660 xin.loadItem(); |
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diff
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661 if (kind.isLong() && yin.result().isConstant() && yin.instruction.asConstant().asLong() == 0 && (cond == Condition.EQ || cond == Condition.NE)) { |
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662 // dont load item |
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663 } else if (kind.isLong() || kind.isFloat() || kind.isDouble()) { |
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664 // longs cannot handle constants at right side |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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665 yin.loadItem(); |
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parents:
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|
666 } |
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|
667 |
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668 // add safepoint before generating condition code so it can be recomputed |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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669 if (x.isSafepoint()) { |
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670 emitXir(xir.genSafepoint(site(x)), x, stateFor(x, x.stateAfter()), null, false); |
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671 } |
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|
672 setNoResult(x); |
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|
673 |
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parents:
diff
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|
674 CiValue left = xin.result(); |
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|
675 CiValue right = yin.result(); |
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676 lir.cmp(cond, left, right); |
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677 moveToPhi(x.stateAfter()); |
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678 if (x.x().kind.isFloat() || x.x().kind.isDouble()) { |
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679 lir.branch(cond, right.kind, x.trueSuccessor(), x.unorderedSuccessor()); |
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680 } else { |
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681 lir.branch(cond, right.kind, x.trueSuccessor()); |
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682 } |
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parents:
diff
changeset
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683 assert x.defaultSuccessor() == x.falseSuccessor() : "wrong destination above"; |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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684 lir.jump(x.defaultSuccessor()); |
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|
685 } |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
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|
686 |
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687 @Override |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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688 protected void genGetObjectUnsafe(CiValue dst, CiValue src, CiValue offset, CiKind kind, boolean isVolatile) { |
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689 if (isVolatile && kind == CiKind.Long) { |
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parents:
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|
690 CiAddress addr = new CiAddress(CiKind.Double, src, offset); |
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691 CiValue tmp = newVariable(CiKind.Double); |
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692 lir.load(addr, tmp, null); |
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693 CiValue spill = operands.newVariable(CiKind.Long, VariableFlag.MustStartInMemory); |
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694 lir.move(tmp, spill); |
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parents:
diff
changeset
|
695 lir.move(spill, dst); |
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diff
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|
696 } else { |
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parents:
diff
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|
697 CiAddress addr = new CiAddress(kind, src, offset); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
698 lir.load(addr, dst, null); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
699 } |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
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|
700 } |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
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diff
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|
701 |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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diff
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|
702 @Override |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
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|
703 protected void genPutObjectUnsafe(CiValue src, CiValue offset, CiValue data, CiKind kind, boolean isVolatile) { |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
704 if (isVolatile && kind == CiKind.Long) { |
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parents:
diff
changeset
|
705 CiAddress addr = new CiAddress(CiKind.Double, src, offset); |
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parents:
diff
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|
706 CiValue tmp = newVariable(CiKind.Double); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
707 CiValue spill = operands.newVariable(CiKind.Double, VariableFlag.MustStartInMemory); |
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|
708 lir.move(data, spill); |
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|
709 lir.move(spill, tmp); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
710 lir.move(tmp, addr); |
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parents:
diff
changeset
|
711 } else { |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
712 CiAddress addr = new CiAddress(kind, src, offset); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
713 boolean isObj = (kind == CiKind.Jsr || kind == CiKind.Object); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
714 if (isObj) { |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
715 // Do the pre-write barrier, if any. |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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|
716 preGCWriteBarrier(addr, false, null); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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diff
changeset
|
717 lir.move(data, addr); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
718 assert src.isVariableOrRegister() : "must be register"; |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
719 // Seems to be a precise address |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
720 postGCWriteBarrier(addr, data); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
721 } else { |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
722 lir.move(data, addr); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
723 } |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
724 } |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
725 } |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
726 |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
727 @Override |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
728 protected CiValue osrBufferPointer() { |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
729 return Util.nonFatalUnimplemented(null); |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
730 } |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
731 |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
732 @Override |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
733 public void visitBoundsCheck(BoundsCheck boundsCheck) { |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
734 Value x = boundsCheck.index(); |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
735 Value y = boundsCheck.length(); |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
736 CiValue left = load(x); |
9ec15d6914ca
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
737 CiValue right = null; |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
738 if (y.isConstant()) { |
9ec15d6914ca
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
739 right = makeOperand(y); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
740 } else { |
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
741 right = load(y); |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
742 } |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
743 lir.cmp(boundsCheck.condition.negate(), left, right); |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
744 emitGuard(boundsCheck); |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
745 } |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
746 } |