Mercurial > projects > dang
annotate gen/CodeGen.d @ 137:efbf51d85f4d
No reason to explicitly add structs as llvm types
If they are referenced anywhere they are already added
author | Anders Halager <halager@gmail.com> |
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date | Fri, 18 Jul 2008 13:10:53 +0200 |
parents | 2be29b296081 |
children | b61de188cd0d |
rev | line source |
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1 module gen.CodeGen; |
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2 |
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3 import tango.io.Stdout, |
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4 Int = tango.text.convert.Integer; |
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5 import tango.core.Array : find, partition; |
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6 |
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7 import llvm.llvm; |
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8 |
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9 import ast.Decl, |
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10 ast.Stmt, |
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11 ast.Exp, |
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12 ast.Module : DModule = Module; |
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13 |
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14 import basic.SmallArray, |
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15 basic.LiteralParsing; |
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16 |
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17 import lexer.Token; |
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18 |
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19 import sema.Scope, |
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20 sema.Visitor; |
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21 |
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22 /** |
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23 Wrapper for Values representing rvalues (things you can only read from) |
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24 **/ |
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25 private struct RValue |
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26 { |
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27 /** |
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28 Returns true if this is a simple value, like an int or a pointer. |
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29 This is basicly anything except a struct, which will contain a Value that |
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30 is a pointer to the struct. |
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31 **/ |
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32 bool isSimple() { return simple; } |
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33 /// Opposite of isSimple |
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34 bool isAggregate() { return !simple; } |
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35 |
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36 Value value; |
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37 private bool simple = true; |
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38 } |
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39 |
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40 /** |
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41 Wrapper for Values representing lvalues (things you can write to) |
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42 **/ |
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43 private struct LValue |
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44 { |
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45 Value getAddress() { return value; } |
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46 private Value value; |
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47 } |
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48 |
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49 class CodeGen |
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50 { |
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51 public: |
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52 this() |
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53 { |
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54 b = new Builder; |
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55 ZeroIndex = ConstantInt.GetU(Type.Int32, 0); |
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56 |
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57 table = new SimpleSymbolTable(); |
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58 |
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59 createBasicTypes(); |
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60 } |
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61 |
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62 /** |
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63 Generate a new module. |
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64 **/ |
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65 /* |
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66 Find all function decls and add the functions to the llvm module, so |
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67 they can be referenced. |
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68 |
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69 Make sure all var-decls are located before functions, so we wont get |
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70 problems when referencing the global vars. |
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71 |
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72 Generate the actual llvm code needed for all decls |
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73 |
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74 Optimize if requested |
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75 |
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76 Write to filehandle (can be a file or stdout) |
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77 */ |
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78 void gen(DModule mod, uint handle, bool optimize, bool inline) |
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79 { |
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80 this.mod = mod; |
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81 // create module |
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82 m = new .llvm.llvm.Module("main_module"); |
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83 scope(exit) m.dispose(); |
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84 |
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85 table.enterScope; |
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86 |
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87 BytePtr = PointerType.Get(Type.Int8); |
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88 auto temp = FunctionType.Get( |
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89 Type.Void, |
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90 [BytePtr, BytePtr, Type.Int32, Type.Int32]); |
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91 llvm_memcpy = m.addFunction(temp, "llvm.memcpy.i32"); |
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92 |
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93 auto registerFunc = |
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94 (FuncDecl fd) |
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95 { |
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96 Type[] param_types; |
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97 foreach (i, p; fd.funcArgs) |
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98 { |
129 | 99 DType t = p.identifier.type; |
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100 if (auto st = t.asStruct()) |
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101 { |
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102 Type pointer = PointerType.Get(llvm(st)); |
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103 param_types ~= pointer; |
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104 } |
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105 else if (auto ar = t.asArray()) |
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106 { |
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107 Type pointer = PointerType.Get(llvm(ar)); |
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108 param_types ~= pointer; |
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109 } |
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110 else |
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111 param_types ~= llvm(t); |
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112 } |
129 | 113 auto ret_t = fd.identifier.type; |
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114 if(auto st = cast(DStruct)ret_t) |
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115 ret_t = DType.Void; |
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116 else if(auto f = cast(DFunction)ret_t) |
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117 ret_t = f.returnType; |
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118 auto func_t = FunctionType.Get(llvm(ret_t), param_types); |
129 | 119 auto llfunc = m.addFunction(func_t, fd.sym.getMangledFQN()); |
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120 |
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121 foreach (i, p; fd.funcArgs) |
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122 { |
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123 if(i == 0 && fd.sret) |
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124 llfunc.addParamAttr(0, ParamAttr.StructRet); |
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125 |
129 | 126 DType t = p.identifier.type; |
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127 if (auto st = t.asStruct) |
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128 { |
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129 if (i == 0 && fd.sret) |
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130 continue; |
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131 llfunc.addParamAttr(i, ParamAttr.ByVal); |
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132 } |
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133 else if (auto ar = t.asArray) |
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134 { |
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135 llfunc.addParamAttr(i, ParamAttr.ByVal); |
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136 } |
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137 } |
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138 }; |
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139 auto visitor = new VisitFuncDecls(registerFunc); |
101
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140 visitor.visit([mod]); |
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141 // Before beginning we move all top level var-decls to the start |
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142 // and then we generate the var-decls first |
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143 // partition is NOT required to be stable, but that should not create |
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144 // any problems. |
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145 partition(mod.decls, (Decl d) { return d.declType == DeclType.VarDecl; }); |
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146 |
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147 foreach (decl; mod.decls) |
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148 genRootDecl(decl); |
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149 |
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150 table.leaveScope; |
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151 |
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152 // debug m.verify(); |
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153 |
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154 if(optimize) |
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155 m.optimize(inline); |
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156 |
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157 m.writeBitcodeToFileHandle(handle); |
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158 } |
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159 |
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160 private: |
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161 /** |
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162 Generate a single top-level Decl |
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163 **/ |
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164 void genRootDecl(Decl decl) |
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165 { |
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166 switch(decl.declType) |
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167 { |
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168 case DeclType.FuncDecl: |
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169 FuncDecl funcDecl = cast(FuncDecl)decl; |
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170 |
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171 // Empty function - declare; |
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172 if(funcDecl.emptyFunction) |
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173 return; |
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174 |
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175 llvm(funcDecl.type); |
129 | 176 auto llfunc = m.getNamedFunction(funcDecl.sym.getMangledFQN()); |
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177 auto func_tp = cast(PointerType)llfunc.type; |
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178 auto func_t = cast(FunctionType)func_tp.elementType(); |
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179 auto ret_t = func_t.returnType(); |
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180 |
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181 |
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182 auto bb = llfunc.appendBasicBlock("entry"); |
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183 b.positionAtEnd(bb); |
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184 |
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185 table.enterScope; |
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186 foreach (i, v; funcDecl.funcArgs) |
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187 { |
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188 llfunc.getParam(i).name = v.identifier.get; |
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189 auto name = v.identifier.get; |
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190 if (!cast(PointerType)llfunc.getParam(i).type) |
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191 { |
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192 auto AI = b.buildAlloca(llfunc.getParam(i).type, name); |
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193 // Value va = b.buildLoad(val, name); |
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194 b.buildStore(llfunc.getParam(i), AI); |
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195 table[name] = AI; |
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196 } |
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197 else |
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198 table[name] = llfunc.getParam(i); |
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199 } |
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200 |
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201 foreach (stmt; funcDecl.statements) |
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202 genStmt(stmt); |
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203 |
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204 // if the function didn't end with a return, we automatically |
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205 // add one (return 0 as default) |
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206 if (b.getInsertBlock().terminated() is false) |
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207 if (ret_t is Type.Void) |
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208 b.buildRetVoid(); |
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209 else |
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210 b.buildRet(ConstantInt.GetS(ret_t, 0)); |
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211 |
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212 table.leaveScope; |
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213 break; |
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214 |
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215 case DeclType.VarDecl: |
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216 auto varDecl = cast(VarDecl)decl; |
129 | 217 auto id = varDecl.identifier; |
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218 Type t = llvm(id.type); |
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219 GlobalVariable g = m.addGlobal(t, id.get); |
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220 g.initializer = ConstantInt.GetS(t, 0); |
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221 table[varDecl.identifier.get] = g; |
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222 break; |
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223 |
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224 default: |
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225 break; |
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226 } |
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227 } |
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228 |
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229 /** |
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230 Generate a single local Decl |
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231 **/ |
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232 void genDecl(Decl decl) |
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233 { |
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234 switch(decl.declType) |
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235 { |
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236 case DeclType.VarDecl: |
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237 auto varDecl = cast(VarDecl)decl; |
129 | 238 auto id = varDecl.identifier; |
239 auto name = id.get; | |
240 auto AI = b.buildAlloca(llvm(id.type), name); | |
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241 table[name] = AI; |
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242 if (varDecl.init) |
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243 { |
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244 LValue dst = genLValue(varDecl.identifier); |
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245 RValue src = genExpression(varDecl.init); |
129 | 246 storeThroughLValue(dst, src, id.type); |
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247 } |
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248 break; |
129 | 249 |
250 case DeclType.FuncDecl: | |
251 genRootDecl(decl); | |
252 break; | |
137
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253 |
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254 default: |
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255 } |
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256 } |
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257 |
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258 // Remove - do it right (basic/Messages.d) |
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259 struct PE |
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260 { |
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261 static char[] NoImplicitConversion = |
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262 "Can't find an implicit conversion between %0 and %1"; |
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263 static char[] VoidRetInNonVoidFunc = |
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264 "Only void functions can return without an expression"; |
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265 } |
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266 |
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267 /** |
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268 Takes two iX and overwrite the smaller one, with a sign-extended version |
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269 so both values can be operated on without worrying about the exact types. |
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270 |
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271 Used when adding a int and a long or similar. |
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272 |
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273 Currently unused |
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274 **/ |
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275 void sextSmallerToLarger(ref Value left, ref Value right) |
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276 { |
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277 if (left.type != right.type) |
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278 { |
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279 // try to find a convertion - only works for iX |
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280 IntegerType l = cast(IntegerType) left.type; |
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281 IntegerType r = cast(IntegerType) right.type; |
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282 if (l is null || r is null) |
114
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283 assert(0, PE.NoImplicitConversion); |
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284 /* |
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285 .arg(left.type.toString) |
114
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286 .arg(right.type.toString);*/ |
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287 |
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288 if (l.numBits() < r.numBits()) |
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289 left = b.buildSExt(left, r, ".cast"); |
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290 else |
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291 right = b.buildSExt(right, l, ".cast"); |
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292 } |
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293 } |
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294 |
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295 /** |
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296 Generate a single expression. |
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297 |
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298 This is the most general way of generating expressions and therefore |
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299 returns an RValue. |
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300 **/ |
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301 RValue genExpression(Exp exp) |
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302 { |
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303 switch(exp.expType) |
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304 { |
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305 case ExpType.Binary: |
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306 return RValue(genBinExp(cast(BinaryExp)exp)); |
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307 case ExpType.IntegerLit: |
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308 auto integerLit = cast(IntegerLit)exp; |
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309 switch(integerLit.number.type) |
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310 { |
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311 case NumberType.Int: |
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312 return RValue(ConstantInt.GetS(Type.Int32, integerLit.number.integer)); |
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313 case NumberType.Long: |
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314 return RValue(ConstantInt.GetS(Type.Int64, integerLit.number.integer)); |
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315 case NumberType.ULong: |
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316 return RValue(ConstantInt.GetS(Type.Int64, integerLit.number.integer)); |
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317 case NumberType.Float: |
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318 return RValue(ConstantReal.Get(Type.Float, integerLit.number.floating)); |
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319 case NumberType.Double: |
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320 return RValue(ConstantReal.Get(Type.Double, integerLit.number.floating)); |
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321 case NumberType.Real: |
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322 return RValue(ConstantReal.Get(Type.X86_FP80, integerLit.number.floating)); |
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323 } |
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324 case ExpType.Negate: |
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325 auto negateExp = cast(NegateExp)exp; |
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326 auto target = genExpression(negateExp.exp); |
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327 return RValue(b.buildNeg(target.value, "neg")); |
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328 case ExpType.Deref: |
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329 auto derefExp = cast(DerefExp)exp; |
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330 auto target = genExpression(derefExp.exp); |
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331 return RValue(b.buildLoad(target.value, "deref")); |
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332 case ExpType.AssignExp: |
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333 auto AE = cast(AssignExp)exp; |
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334 LValue dst = genLValue(AE.identifier); |
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335 RValue src = genExpression(AE.exp); |
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336 storeThroughLValue(dst, src, AE.exp.type()); |
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337 return src; |
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338 case ExpType.Index: |
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339 auto indexExp = cast(IndexExp)exp; |
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340 return loadLValue(genLValue(exp)); |
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341 case ExpType.CallExp: |
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342 auto callExp = cast(CallExp)exp; |
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343 // BUG: Might not be a simple identifier, a.foo(x) is also a |
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344 // valid call - or foo(x)(y) for that matter. |
129 | 345 |
346 // if type of exp is DFunction - safe to call getSymbol and FQN | |
347 // if function ptr: do something else | |
348 // if delegate do a third thing | |
349 // if struct/class check for opCall | |
350 DType type = callExp.exp.type; | |
351 assert (type.isFunction(), "Can only call functions"); | |
352 auto sym = callExp.exp.getSymbol(); | |
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353 scope args = new Value[callExp.args.length]; |
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354 foreach (i, arg; callExp.args) |
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355 args[i] = genExpression(arg).value; |
129 | 356 llvm(type); |
357 auto f = m.getNamedFunction(sym.getMangledFQN()); | |
358 DFunction f_type = type.asFunction(); | |
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359 bool isVoid = f_type.returnType is DType.Void; |
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360 // BUG: doesn't do implicit type-conversion on args |
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361 auto r = b.buildCall(f, args, isVoid? "" : "call"); |
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362 return RValue(r); |
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363 case ExpType.CastExp: |
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364 auto castExp = cast(CastExp)exp; |
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365 exp = castExp.exp; |
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366 auto value = genExpression(exp); |
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367 |
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368 if (!exp.type.hasImplicitConversionTo(castExp.type)) |
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369 assert(0, "Invalid cast"); |
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370 |
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371 return genTypeCast(value, exp.type, castExp.type); |
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372 |
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373 case ExpType.Identifier: |
129 | 374 auto id = cast(Identifier)exp; |
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375 if(id.type.isStruct() || id.type.isArray()) |
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376 return RValue(table.find(id.get)); |
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377 else |
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378 return RValue(b.buildLoad(table.find(id.get), id.get)); |
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379 case ExpType.MemberReference: |
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380 return loadLValue(genLValue(exp)); |
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381 } |
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382 assert(0, "Reached end of switch in genExpression"); |
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383 return RValue(null); |
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384 } |
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385 |
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386 /** |
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387 Generate a binary expression. |
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388 |
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389 Currently only works for signed and unsigned integers, but is almost |
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390 ready for floats and should be expanded to everything else. |
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391 **/ |
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392 Value genBinExp(BinaryExp e) |
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393 { |
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394 auto left = genExpression(e.left).value; |
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395 auto right = genExpression(e.right).value; |
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396 DType t_a = e.left.type; |
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397 DType t_b = e.right.type; |
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398 |
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399 Value res; |
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400 // TODO: do usual type promotions on a and b |
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401 // TODO: support floats |
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402 if (t_a.isArithmetic() && t_b.isArithmetic()) |
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403 { |
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404 Operation op = t_a.getOperationWith(op2op(e.op), t_b); |
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405 assert(op.isBuiltin(), |
120
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406 "numbers should only use builtin ops"); |
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407 alias BuiltinOperation BO; |
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408 BO val = op.builtinOp(); |
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409 // map val to buildAdd or similar |
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410 switch (val) { |
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411 case BO.Add: res = b.buildAdd(left, right, "add"); break; |
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412 case BO.Sub: res = b.buildSub(left, right, "sub"); break; |
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413 case BO.Mul: res = b.buildMul(left, right, "mul"); break; |
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414 case BO.SDiv: res = b.buildSDiv(left, right, "div"); break; |
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415 case BO.UDiv: res = b.buildUDiv(left, right, "div"); break; |
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416 case BO.FDiv: res = b.buildFDiv(left, right, "div"); break; |
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417 case BO.SRem: res = b.buildSRem(left, right, "rem"); break; |
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418 case BO.URem: res = b.buildURem(left, right, "rem"); break; |
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419 case BO.FRem: res = b.buildFRem(left, right, "rem"); break; |
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420 |
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421 case BO.Shl: res = b.buildShl(left, right, "shl"); break; |
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422 case BO.LShr: res = b.buildLShr(left, right, "lshr"); break; |
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423 case BO.AShr: res = b.buildAShr(left, right, "ashr"); break; |
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424 |
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425 case BO.And: res = b.buildAnd(left, right, "and"); break; |
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426 case BO.Or: res = b.buildOr (left, right, "or"); break; |
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427 case BO.Xor: res = b.buildXor(left, right, "xor"); break; |
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428 |
107
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429 default: |
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430 LLVMPred pred = predFromBI(val); |
121
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431 if (t_a.isReal()) |
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432 if (val == BO.Eq) |
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433 pred = LLVMPred.Real(RealPredicate.OEQ); |
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434 else if (val == BO.Ne) |
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435 pred = LLVMPred.Real(RealPredicate.ONE); |
107
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436 IntPredicate ip = pred.intPred; |
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437 RealPredicate rp = pred.realPred; |
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438 assert(pred.isValid, "Not a predicate"); |
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439 if (pred.isReal) |
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440 res = b.buildFCmp(rp, left, right, "cmp"); |
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441 else |
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442 res = b.buildICmp(ip, left, right, "cmp"); |
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443 break; |
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444 } |
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445 } |
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446 else |
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447 /* |
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448 if left has op for right's type: |
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449 a_op = left.op(right) |
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450 if right has usable op_r: |
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451 b_op_r = right.op_r(left) |
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452 if a_op or b_op_r is set, choose the best one |
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453 else if op is commutative |
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454 if left has usable op_r |
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455 a_op_r = left.op_r(right) |
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456 if right has usable op |
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457 b_op = right.op(left) |
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458 choose best one from a_op_r and b_op |
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459 else error |
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460 */ |
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461 assert(0, "Not integers?"); |
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462 |
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463 return res; |
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464 } |
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465 |
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466 /** |
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467 Generates one statement |
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468 **/ |
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469 // This should be split into specific methods - one per Stmt type? |
51
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470 void genStmt(Stmt stmt) |
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471 { |
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472 switch(stmt.stmtType) |
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473 { |
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474 case StmtType.Compound: |
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475 auto stmts = cast(CompoundStatement)stmt; |
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476 foreach (s; stmts.statements) |
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477 genStmt(s); |
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478 break; |
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479 case StmtType.Return: |
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480 auto ret = cast(ReturnStmt)stmt; |
64
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481 DFunction type = stmt.env.parentFunction().type(); |
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
482 Type t = llvm(type.returnType); |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
483 if (ret.exp is null) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
484 if (t is Type.Void) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
485 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
486 b.buildRetVoid(); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
487 return; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
488 } |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
489 else |
114
3a0cd42de9cc
Removed misc/Error.d and is now using the error system all way through.
Anders Johnsen <skabet@gmail.com>
parents:
107
diff
changeset
|
490 assert(0, PE.VoidRetInNonVoidFunc); |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
491 |
107
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
492 RValue v = genExpression(ret.exp); |
55
79cb0afafabe
Now structs are somewhat useable to use.
Anders Johnsen <skabet@gmail.com>
parents:
54
diff
changeset
|
493 /* if (v.type != t) |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
494 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
495 IntegerType v_t = cast(IntegerType) v.type; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
496 IntegerType i_t = cast(IntegerType) t; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
497 if (v_t is null || i_t is null) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
498 throw error(__LINE__, PE.NoImplicitConversion) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
499 .arg(v.type.toString) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
500 .arg(t.toString); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
501 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
502 if (v_t.numBits() < i_t.numBits()) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
503 v = b.buildSExt(v, t, ".cast"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
504 else |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
505 v = b.buildTrunc(v, t, ".cast"); |
55
79cb0afafabe
Now structs are somewhat useable to use.
Anders Johnsen <skabet@gmail.com>
parents:
54
diff
changeset
|
506 }*/ |
107
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
507 b.buildRet(v.value); |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
508 break; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
509 case StmtType.Decl: |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
510 auto declStmt = cast(DeclStmt)stmt; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
511 genDecl(declStmt.decl); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
512 break; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
513 case StmtType.Exp: |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
514 auto expStmt = cast(ExpStmt)stmt; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
515 genExpression(expStmt.exp); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
516 break; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
517 case StmtType.If: |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
518 auto ifStmt = cast(IfStmt)stmt; |
107
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
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101
diff
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|
519 Value cond = genExpression(ifStmt.cond).value; |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
520 if (cond.type !is Type.Int1) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
521 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
522 Value False = ConstantInt.GetS(cond.type, 0); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
523 cond = b.buildICmp(IntPredicate.NE, cond, False, ".cond"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
524 } |
129 | 525 auto func_name = symbolName(stmt.env.parentFunction()); |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
526 Function func = m.getNamedFunction(func_name); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
527 bool has_else = (ifStmt.else_body !is null); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
528 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
529 auto thenBB = func.appendBasicBlock("then"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
530 auto elseBB = has_else? func.appendBasicBlock("else") : null; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
531 auto mergeBB = func.appendBasicBlock("merge"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
532 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
533 b.buildCondBr(cond, thenBB, has_else? elseBB : mergeBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
534 b.positionAtEnd(thenBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
535 genStmt(ifStmt.then_body); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
536 thenBB = b.getInsertBlock(); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
537 if (b.getInsertBlock().terminated() is false) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
538 b.buildBr(mergeBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
539 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
540 if (has_else) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
541 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
542 b.positionAtEnd(elseBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
543 genStmt(ifStmt.else_body); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
544 elseBB = b.getInsertBlock(); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
545 if (elseBB.terminated() is false) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
546 b.buildBr(mergeBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
547 } |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
548 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
549 b.positionAtEnd(mergeBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
550 break; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
551 case StmtType.While: |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
552 auto wStmt = cast(WhileStmt)stmt; |
129 | 553 auto fd = stmt.env.parentFunction(); |
554 Function func = m.getNamedFunction(symbolName(fd)); | |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
555 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
556 auto condBB = func.appendBasicBlock("cond"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
557 auto bodyBB = func.appendBasicBlock("body"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
558 auto doneBB = func.appendBasicBlock("done"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
559 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
560 b.buildBr(condBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
561 b.positionAtEnd(condBB); |
107
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
562 Value cond = genExpression(wStmt.cond).value; |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
563 if (cond.type !is Type.Int1) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
564 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
565 Value False = ConstantInt.GetS(cond.type, 0); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
566 cond = b.buildICmp(IntPredicate.NE, cond, False, ".cond"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
567 } |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
568 b.buildCondBr(cond, bodyBB, doneBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
569 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
570 b.positionAtEnd(bodyBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
571 genStmt(wStmt.whileBody); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
572 if (b.getInsertBlock().terminated() is false) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
573 b.buildBr(condBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
574 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
575 b.positionAtEnd(doneBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
576 break; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
577 case StmtType.Switch: |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
578 auto sw = cast(SwitchStmt)stmt; |
107
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
579 Value cond = genExpression(sw.cond).value; |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
580 |
56
4ae365eff712
Now return types works for structs... Also, simplyfing in AST have been startet - but still messy. This update is a little messy...
Anders Johnsen <skabet@gmail.com>
parents:
55
diff
changeset
|
581 auto func_name = stmt.env.parentFunction().identifier.get; |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
582 Function func = m.getNamedFunction(func_name); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
583 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
584 BasicBlock oldBB = b.getInsertBlock(); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
585 BasicBlock defBB; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
586 BasicBlock endBB = func.appendBasicBlock("sw.end"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
587 if (sw.defaultBlock) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
588 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
589 defBB = Function.InsertBasicBlock(endBB, "sw.def"); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
590 b.positionAtEnd(defBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
591 foreach (case_statement; sw.defaultBlock) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
592 genStmt(case_statement); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
593 if (!defBB.terminated()) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
594 b.buildBr(endBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
595 b.positionAtEnd(oldBB); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
596 } |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
597 else |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
598 defBB = endBB; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
599 auto SI = b.buildSwitch(cond, defBB, sw.cases.length); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
600 foreach (c; sw.cases) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
601 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
602 BasicBlock prevBB; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
603 foreach (i, val; c.values) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
604 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
605 auto BB = Function.InsertBasicBlock(defBB, "sw.bb"); |
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606 SI.addCase(ConstantInt.GetS(cond.type, c.values_converted[i]), BB); |
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607 |
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608 if (i + 1 == c.values.length) |
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609 { |
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610 b.positionAtEnd(BB); |
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611 foreach (case_statement; c.stmts) |
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612 genStmt(case_statement); |
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613 if (!BB.terminated()) |
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614 b.buildBr(c.followedByDefault? defBB : endBB); |
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615 } |
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616 |
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617 if (prevBB !is null && !prevBB.terminated()) |
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618 { |
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619 b.positionAtEnd(prevBB); |
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620 b.buildBr(BB); |
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621 } |
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622 prevBB = BB; |
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623 } |
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624 } |
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625 b.positionAtEnd(endBB); |
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626 break; |
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627 } |
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628 } |
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629 |
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630 /* |
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631 Get the address of an expression - allowing us to modify something in |
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632 memory or on the stack. |
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633 */ |
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634 LValue genLValue(Exp exp) |
51
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635 { |
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636 switch(exp.expType) |
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637 { |
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638 case ExpType.Identifier: |
129 | 639 auto id = cast(Identifier)exp; |
107
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640 return LValue(table.find(id.get)); |
80
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641 case ExpType.Deref: |
116
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642 // LValue(*x): load(x) |
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643 // RValue(*x): load(load(x)) |
107
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644 // This way *x = *x + 1 will work |
116
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645 // We need an ekstra load, because we get an i32** rather than |
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646 // i32* since stuff is alloc'd |
107
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647 auto DE = cast(DerefExp)exp; |
113 | 648 return LValue(genExpression(DE.exp).value); |
83
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649 case ExpType.Index: |
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650 auto indexExp = cast(IndexExp)exp; |
85
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651 auto type = indexExp.target.type; |
83
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652 auto index = genExpression(indexExp.index); |
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653 Value[2] gep_indices; |
107
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654 gep_indices[0] = ZeroIndex; |
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655 gep_indices[1] = index.value; |
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656 Value res; |
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657 auto target = genLValue(indexExp.target).getAddress(); |
136 | 658 if (type.isStaticArray()) |
107
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659 res = b.buildGEP(target, gep_indices[0 .. 2], "index"); |
85
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660 else if (type.isPointer()) |
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661 res = b.buildGEP(target, gep_indices[1 .. 2], "index"); |
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662 else assert(0, "Can only index pointers and arrays"); |
107
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663 return LValue(res); |
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664 case ExpType.MemberReference: |
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665 auto mem = cast(MemberReference)exp; |
107
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666 switch (mem.target.expType) |
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667 { |
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668 case ExpType.Identifier: |
129 | 669 auto id = cast(Identifier)mem.target; |
51
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670 auto child = mem.child; |
93
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671 Value v = table.find(id.get); |
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672 DType t = id.type; |
64
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673 auto st = t.asStruct; |
51
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674 |
55
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675 int i = st.indexOf(child.get); |
51
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676 |
107
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677 Value[2] vals; |
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678 vals[0] = ZeroIndex; |
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679 vals[1] = ConstantInt.GetU(IntegerType.Int32, i); |
51
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680 |
93
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681 Value val = b.buildGEP(v, vals, id.get~"."~child.get); |
107
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682 return LValue(val); |
51
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683 |
72
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684 case ExpType.MemberReference: |
107
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685 auto addr = genLValue(mem.target).getAddress(); |
72
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686 auto child = mem.child; |
129 | 687 DStruct t = mem.target.type.asStruct(); |
72
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688 |
129 | 689 int i = t.indexOf(child.get); |
72
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690 |
107
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691 Value[2] vals; |
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692 vals[0] = ZeroIndex; |
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693 vals[1] = ConstantInt.GetU(IntegerType.Int32, i); |
72
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694 |
107
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695 Value val = b.buildGEP(addr, vals, "."~child.get); |
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696 return LValue(val); |
51
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697 } |
107
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698 break; |
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|
699 } |
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|
700 assert(0, "Reached end of switch in getPointer"); |
107
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701 return LValue(null); |
51
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|
702 } |
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|
703 |
107
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|
704 /** |
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705 Store into an lvalue from a rvalue. Both are assumed to have type t. |
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706 **/ |
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707 void storeThroughLValue(LValue dst, RValue src, DType t) |
51
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708 { |
107
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709 Value to = dst.getAddress(); |
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710 Value from = src.value; |
51
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|
711 |
107
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712 auto a = cast(PointerType)to.type; |
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713 assert(a !is null, "Can only store through pointers"); |
51
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714 |
107
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715 if (auto st = t.asStruct()) |
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716 genMemcpy(to, from, t); |
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717 else |
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718 b.buildStore(from, to); |
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719 } |
51
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720 |
107
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721 /** |
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722 Copy from src into dst. The values are assumed to have the same size, |
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723 and the amount of bytes to copy is taken from t. |
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724 **/ |
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725 void genMemcpy(Value dst, Value src, DType t) |
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726 { |
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727 Value from = b.buildBitCast(src, BytePtr, ".copy_from"); |
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728 Value to = b.buildBitCast(dst, BytePtr, ".copy_to"); |
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729 Value[4] args; |
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Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
730 args[0] = to; |
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
731 args[1] = from; |
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
732 args[2] = ConstantInt.GetS(Type.Int32, t.byteSize()); |
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
733 args[3] = ConstantInt.GetS(Type.Int32, 32); |
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
734 b.buildCall(llvm_memcpy, args[], null); |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
735 } |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
736 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
737 /** |
120
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
738 Generate the statements necessary to convert V, from type 'from' to type |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
739 'to'. |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
740 **/ |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
741 RValue genTypeCast(RValue V, DType from, DType to) |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
742 { |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
743 Value delegate(Value, Type, char[]) extend, trunc; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
744 if(auto ito = to.asInteger()) |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
745 { |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
746 extend = ito.unsigned? &b.buildZExt : &b.buildSExt; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
747 trunc = &b.buildTrunc; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
748 if(auto rfrom = from.isReal()) |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
749 { |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
750 extend = ito.unsigned? &b.buildFPToUI : &b.buildFPToSI; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
751 trunc = extend; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
752 } |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
753 } |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
754 else if (auto rto = to.asReal()) |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
755 { |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
756 extend = &b.buildFPExt; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
757 trunc = &b.buildFPTrunc; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
758 if(auto ifrom = from.isInteger()) |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
759 { |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
760 extend = rto.unsigned? &b.buildUIToFP : &b.buildSIToFP; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
761 trunc = extend; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
762 } |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
763 } |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
764 else |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
765 assert(0, "implicit cast need implimentation"); |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
766 |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
767 Value res; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
768 if (from.byteSize() < to.byteSize()) |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
769 res = extend(V.value, llvm(to), "ext"); |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
770 else |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
771 res = trunc(V.value, llvm(to), "trunc"); |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
772 return RValue(res); |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
773 } |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
774 |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
775 /** |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
776 Given the address of something, load it into an alloc. |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
777 **/ |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
778 RValue loadLValue(LValue addr, char[] name = null) |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
779 { |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
780 Value val = addr.getAddress(); |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
781 if (name is null) |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
782 name = val.name.length > 0? val.name : "load"; |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
783 |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
784 auto res = b.buildLoad(val, name); |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
785 return RValue(res); |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
786 } |
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
787 |
129 | 788 /// Get the mangled name of a function |
789 char[] symbolName(FuncDecl f) | |
790 { | |
791 return f.sym.getMangledFQN(); | |
792 } | |
793 | |
120
7d0898f77685
Implement the cast expression - works for integers and real/float/double
Anders Halager <halager@gmail.com>
parents:
119
diff
changeset
|
794 /** |
51
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
795 Get the LLVM Type corresponding to a DType. |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
796 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
797 Currently using the built-in associative array - not sure if it works |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
798 well when the hashes are so uniform. |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
799 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
800 Other possibilities would be to find a hash-function that works on |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
801 something as small as 4 bytes or to create a sparse array perhaps. |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
802 */ |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
803 Type llvm(DType t) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
804 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
805 if (auto llvm_t = t in type_map) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
806 return *llvm_t; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
807 return llvmCreateNew(t); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
808 } |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
809 |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
810 // Create an LLVM type and insert it into the type map, and return the |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
811 // result |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
812 Type llvmCreateNew(DType t) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
813 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
814 if (auto i = cast(DInteger)t) |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
815 { |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
816 Type res = IntegerType.Get(i.byteSize() * 8); |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
817 type_map[t] = res; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
818 return res; |
c96cdcbdb9d6
Rearranged some stuff, and renamed LLVMGen -> CodeGen
Anders Halager <halager@gmail.com>
parents:
diff
changeset
|
819 } |
64
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
820 else if (auto s = t.asStruct) |
53
da551f90e03f
Added struct decl and forward ref. A note on structs: they need to make a new scope when declared. Otherwise you could access struct members as globals
Anders Johnsen <skabet@gmail.com>
parents:
52
diff
changeset
|
821 { |
58 | 822 SmallArray!(Type, 8) members; |
68
381975d76baf
A LOT of bug fixing - also implemented implicit casts. If you do a --ast-dump-code on a target with some algebra of differant types, you should now see the type casts being made. Also, Tests are again back with only switches failing...
Anders Johnsen <skabet@gmail.com>
parents:
67
diff
changeset
|
823 DType[] array; |
381975d76baf
A LOT of bug fixing - also implemented implicit casts. If you do a --ast-dump-code on a target with some algebra of differant types, you should now see the type casts being made. Also, Tests are again back with only switches failing...
Anders Johnsen <skabet@gmail.com>
parents:
67
diff
changeset
|
824 array.length = s.members.length; |
381975d76baf
A LOT of bug fixing - also implemented implicit casts. If you do a --ast-dump-code on a target with some algebra of differant types, you should now see the type casts being made. Also, Tests are again back with only switches failing...
Anders Johnsen <skabet@gmail.com>
parents:
67
diff
changeset
|
825 |
107
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
Anders Halager <halager@gmail.com>
parents:
101
diff
changeset
|
826 foreach (m; s.members) |
68
381975d76baf
A LOT of bug fixing - also implemented implicit casts. If you do a --ast-dump-code on a target with some algebra of differant types, you should now see the type casts being made. Also, Tests are again back with only switches failing...
Anders Johnsen <skabet@gmail.com>
parents:
67
diff
changeset
|
827 array[m.index] = m.type; |
381975d76baf
A LOT of bug fixing - also implemented implicit casts. If you do a --ast-dump-code on a target with some algebra of differant types, you should now see the type casts being made. Also, Tests are again back with only switches failing...
Anders Johnsen <skabet@gmail.com>
parents:
67
diff
changeset
|
828 |
107
189c049cbfcc
Cleanup of codegen, better support for operators a few bugfixes
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parents:
101
diff
changeset
|
829 foreach (m; array) |
68
381975d76baf
A LOT of bug fixing - also implemented implicit casts. If you do a --ast-dump-code on a target with some algebra of differant types, you should now see the type casts being made. Also, Tests are again back with only switches failing...
Anders Johnsen <skabet@gmail.com>
parents:
67
diff
changeset
|
830 members ~= llvm(m); |
53
da551f90e03f
Added struct decl and forward ref. A note on structs: they need to make a new scope when declared. Otherwise you could access struct members as globals
Anders Johnsen <skabet@gmail.com>
parents:
52
diff
changeset
|
831 |
58 | 832 Type res = StructType.Get(members.unsafe()); |
53
da551f90e03f
Added struct decl and forward ref. A note on structs: they need to make a new scope when declared. Otherwise you could access struct members as globals
Anders Johnsen <skabet@gmail.com>
parents:
52
diff
changeset
|
833 type_map[t] = res; |
64
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
834 m.addTypeName(s.name, res); |
53
da551f90e03f
Added struct decl and forward ref. A note on structs: they need to make a new scope when declared. Otherwise you could access struct members as globals
Anders Johnsen <skabet@gmail.com>
parents:
52
diff
changeset
|
835 return res; |
da551f90e03f
Added struct decl and forward ref. A note on structs: they need to make a new scope when declared. Otherwise you could access struct members as globals
Anders Johnsen <skabet@gmail.com>
parents:
52
diff
changeset
|
836 } |
64
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
837 else if (auto f = t.asFunction) |
59
1d6f4ad38a91
Make most of the tests pass again
Anders Halager <halager@gmail.com>
parents:
58
diff
changeset
|
838 { |
64
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
839 // We should never have a function returning structs, because of |
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
840 // the simplify step |
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
841 assert(f.returnType.isStruct() == false, "Can't return structs"); |
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
842 Type ret_t = llvm(f.returnType); |
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
843 |
59
1d6f4ad38a91
Make most of the tests pass again
Anders Halager <halager@gmail.com>
parents:
58
diff
changeset
|
844 SmallArray!(Type, 8) params; |
1d6f4ad38a91
Make most of the tests pass again
Anders Halager <halager@gmail.com>
parents:
58
diff
changeset
|
845 foreach(param; f.params) |
64
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
846 if (param.isStruct) |
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
847 params ~= PointerType.Get(llvm(param)); |
86
29f486ccc203
Fixed a bug that made arrays as params fail big time
Anders Johnsen <skabet@gmail.com>
parents:
85
diff
changeset
|
848 else if (param.isArray) |
29f486ccc203
Fixed a bug that made arrays as params fail big time
Anders Johnsen <skabet@gmail.com>
parents:
85
diff
changeset
|
849 params ~= PointerType.Get(llvm(param)); |
64
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
850 else |
91f10c34cd7b
Fixed some bugs, removed the function gathering pass in codegen and types are
Anders Halager <halager@gmail.com>
parents:
63
diff
changeset
|
851 params ~= llvm(param); |
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852 |
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853 Type res = FunctionType.Get(ret_t, params.unsafe()); |
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854 type_map[t] = res; |
129 | 855 /* |
856 //TODO: create own DType -> FunctionType mapping without names | |
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857 auto id = new Identifier(f.name); |
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858 id.setType(f); |
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859 |
129 | 860 auto f_name = symbolName(id); |
861 auto f_t = m.getNamedFunction(f_name); | |
101
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862 if(f_t is null) |
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863 { |
129 | 864 Stdout("oh noes").newline; |
865 auto llfunc = m.addFunction(res, f_name); | |
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866 |
101
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867 foreach (i, param; f.params) |
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868 if (param.isStruct) |
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869 llfunc.addParamAttr(i, ParamAttr.ByVal); |
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870 |
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871 if (f.firstParamIsReturnValue) |
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872 { |
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873 llfunc.removeParamAttr(0, ParamAttr.ByVal); |
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874 llfunc.addParamAttr(0, ParamAttr.StructRet); |
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875 } |
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876 } |
129 | 877 */ |
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878 return res; |
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879 } |
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880 else if (auto f = t.asPointer) |
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881 { |
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882 Type res = PointerType.Get(llvm(f.pointerOf)); |
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883 type_map[t] = res; |
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884 return res; |
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885 } |
136 | 886 else if (auto f = t.asStaticArray) |
81 | 887 { |
888 Type res = ArrayType.Get(llvm(f.arrayOf), f.size); | |
889 type_map[t] = res; | |
890 return res; | |
891 } | |
59
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892 assert(0, "Only integers, structs and functions are supported"); |
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893 } |
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894 |
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895 // Might as well insert all the basic types from the start |
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896 void createBasicTypes() |
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897 { |
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898 type_map[DType.Void] = Type.Void; |
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899 |
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900 type_map[DType.Bool] = Type.Int1; |
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901 type_map[DType.Byte] = Type.Int8; |
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902 type_map[DType.UByte] = Type.Int8; |
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903 type_map[DType.Short] = Type.Int16; |
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904 type_map[DType.UShort] = Type.Int16; |
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905 type_map[DType.Int] = Type.Int32; |
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906 type_map[DType.UInt] = Type.Int32; |
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907 type_map[DType.Long] = Type.Int64; |
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908 type_map[DType.ULong] = Type.Int64; |
118
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909 |
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910 type_map[DType.Float] = Type.Float; |
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911 type_map[DType.Double] = Type.Double; |
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912 type_map[DType.Real] = Type.X86_FP80; |
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913 |
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914 type_map[DType.Char] = Type.Int8; |
129 | 915 type_map[DType.WChar] = Type.Int16; |
916 type_map[DType.DChar] = Type.Int32; | |
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917 } |
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918 |
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919 private: |
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920 |
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921 // llvm stuff |
107
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922 DModule mod; |
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923 .llvm.llvm.Module m; |
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924 Builder b; |
51
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925 Function llvm_memcpy; |
107
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926 ConstantInt ZeroIndex; |
51
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927 Type BytePtr; |
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|
928 Type[DType] type_map; |
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|
929 |
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930 SimpleSymbolTable table; |
107
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931 } |
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932 |
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933 private Operator op2op(BinaryExp.Operator op) |
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934 { |
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935 alias BinaryExp.Operator O; |
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936 Operator res; |
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937 switch (op) { |
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938 case O.Add: res = Operator.Add; break; |
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939 case O.Sub: res = Operator.Sub; break; |
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940 case O.Mul: res = Operator.Mul; break; |
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941 case O.Div: res = Operator.Div; break; |
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942 case O.LeftShift: res = Operator.Shl; break; |
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943 case O.RightShift: res = Operator.AShr; break; |
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944 case O.UnsignedRightShift: res = Operator.LShr; break; |
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945 |
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946 case O.And: res = Operator.And; break; |
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947 case O.Or: res = Operator.Or; break; |
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948 case O.Xor: res = Operator.Xor; break; |
107
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949 |
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950 case O.Eq: res = Operator.Eq; break; |
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951 case O.Ne: res = Operator.Ne; break; |
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952 case O.Lt: res = Operator.Lt; break; |
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953 case O.Le: res = Operator.Le; break; |
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954 case O.Gt: res = Operator.Gt; break; |
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955 case O.Ge: res = Operator.Ge; break; |
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956 } |
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957 return res; |
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958 } |
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959 |
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960 private struct LLVMPred |
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961 { |
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962 bool isValid = false; |
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963 bool isReal; |
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964 union { |
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965 IntPredicate intPred; |
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966 RealPredicate realPred; |
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967 } |
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968 |
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969 static LLVMPred Int(IntPredicate p) |
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970 { |
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971 LLVMPred res; |
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972 res.isValid = true; |
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973 res.isReal = false; |
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974 res.intPred = p; |
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975 return res; |
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976 } |
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977 static LLVMPred Real(RealPredicate p) |
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978 { |
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979 LLVMPred res; |
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980 res.isValid = true; |
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981 res.isReal = true; |
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982 res.realPred = p; |
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983 return res; |
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984 } |
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985 } |
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986 private LLVMPred predFromBI(BuiltinOperation op) |
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987 { |
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988 alias BuiltinOperation O; |
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989 LLVMPred pred; |
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990 switch (op) { |
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991 case O.Eq: pred = LLVMPred.Int(IntPredicate.EQ); break; |
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992 case O.Ne: pred = LLVMPred.Int(IntPredicate.NE); break; |
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993 |
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994 case O.SLt: pred = LLVMPred.Int(IntPredicate.SLT); break; |
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995 case O.ULt: pred = LLVMPred.Int(IntPredicate.ULT); break; |
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996 case O.FLt: pred = LLVMPred.Real(RealPredicate.OLT); break; |
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997 |
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998 case O.SLe: pred = LLVMPred.Int(IntPredicate.SLE); break; |
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999 case O.ULe: pred = LLVMPred.Int(IntPredicate.ULE); break; |
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1000 case O.FLe: pred = LLVMPred.Real(RealPredicate.OLE); break; |
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1001 |
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|
1002 case O.SGt: pred = LLVMPred.Int(IntPredicate.SGT); break; |
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Anders Halager <halager@gmail.com>
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1003 case O.UGt: pred = LLVMPred.Int(IntPredicate.UGT); break; |
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1004 case O.FGt: pred = LLVMPred.Real(RealPredicate.OGT); break; |
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1005 |
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1006 case O.SGe: pred = LLVMPred.Int(IntPredicate.SGE); break; |
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1007 case O.UGe: pred = LLVMPred.Int(IntPredicate.UGE); break; |
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1008 case O.FGe: pred = LLVMPred.Real(RealPredicate.OGE); break; |
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1009 }; |
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1010 return pred; |
51
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1011 } |
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1012 |
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1013 private class VisitFuncDecls : Visitor!(void) |
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1014 { |
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1015 void delegate(FuncDecl) dg; |
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1016 this(void delegate(FuncDecl funcDecl) dg) |
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1017 { |
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1018 this.dg = dg; |
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1019 } |
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|
1020 |
129 | 1021 override void visitFuncDecl(FuncDecl fd) |
51
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1022 { |
129 | 1023 dg(fd); |
51
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1024 } |
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1025 } |
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|
1026 |
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|
1027 private class SimpleSymbolTable |
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1028 { |
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1029 Value[char[]][] namedValues; |
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1030 |
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1031 void enterScope() |
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1032 { |
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1033 namedValues ~= cast(Value[char[]])["__dollar":null]; |
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1034 } |
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|
1035 |
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1036 void leaveScope() |
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|
1037 { |
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1038 namedValues.length = namedValues.length - 1; |
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1039 } |
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|
1040 |
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|
1041 Value put(Value val, char[] key) |
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1042 { |
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1043 namedValues[$ - 1][key] = val; |
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1044 return val; |
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1045 } |
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1046 |
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|
1047 Value find(char[] key) |
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1048 { |
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1049 foreach_reverse (map; namedValues) |
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1050 if(auto val_ptr = key in map) |
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1051 return *val_ptr; |
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1052 return null; |
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|
1053 } |
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|
1054 |
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|
1055 alias find opIndex; |
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|
1056 alias put opIndexAssign; |
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|
1057 } |
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|
1058 |