Mercurial > projects > ldc
annotate gen/toobj.cpp @ 1179:71479f6e2a01
Give function & delegate literals, foreach bodies and lazy parameters internal
linkage.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Mon, 30 Mar 2009 16:34:36 +0200 |
parents | e40c65bd8c5d |
children | a6dbd571d417 |
rev | line source |
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1 | 1 |
2 // Copyright (c) 1999-2004 by Digital Mars | |
3 // All Rights Reserved | |
4 // written by Walter Bright | |
5 // www.digitalmars.com | |
6 // License for redistribution is by either the Artistic License | |
7 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
8 // See the included readme.txt for details. | |
9 | |
10 #include <cstddef> | |
11 #include <fstream> | |
12 | |
40 | 13 #include "gen/llvm.h" |
1 | 14 #include "llvm/Analysis/Verifier.h" |
15 #include "llvm/Bitcode/ReaderWriter.h" | |
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16 #include "llvm/Module.h" |
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17 #include "llvm/ModuleProvider.h" |
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18 #include "llvm/PassManager.h" |
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19 #include "llvm/LinkAllPasses.h" |
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20 #include "llvm/System/Program.h" |
217
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21 #include "llvm/System/Path.h" |
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22 #include "llvm/Support/raw_ostream.h" |
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23 #include "llvm/Support/CommandLine.h" |
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24 #include "llvm/Target/TargetMachine.h" |
1 | 25 |
26 #include "mars.h" | |
27 #include "module.h" | |
28 #include "mtype.h" | |
29 #include "declaration.h" | |
30 #include "statement.h" | |
31 #include "enum.h" | |
32 #include "aggregate.h" | |
33 #include "init.h" | |
34 #include "attrib.h" | |
35 #include "id.h" | |
36 #include "import.h" | |
37 #include "template.h" | |
18 | 38 #include "scope.h" |
1 | 39 |
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40 #include "gen/irstate.h" |
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41 #include "gen/logger.h" |
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42 #include "gen/tollvm.h" |
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43 #include "gen/llvmhelpers.h" |
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44 #include "gen/arrays.h" |
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45 #include "gen/structs.h" |
100 | 46 #include "gen/classes.h" |
47 #include "gen/functions.h" | |
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48 #include "gen/todebug.h" |
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49 #include "gen/runtime.h" |
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50 #include "gen/abi.h" |
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51 #include "gen/cl_options.h" |
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52 #include "gen/optimizer.h" |
1 | 53 |
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54 #include "ir/irvar.h" |
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55 #include "ir/irmodule.h" |
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56 |
1 | 57 ////////////////////////////////////////////////////////////////////////////////////////// |
58 | |
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59 static llvm::cl::opt<bool> noVerify("noverify", |
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60 llvm::cl::desc("Do not run the validation pass before writing bitcode"), |
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61 llvm::cl::ZeroOrMore); |
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62 |
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63 ////////////////////////////////////////////////////////////////////////////////////////// |
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64 |
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65 // fwd decl |
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66 void write_asm_to_file(llvm::TargetMachine &Target, llvm::Module& m, llvm::raw_fd_ostream& Out); |
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67 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath); |
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68 |
125 | 69 ////////////////////////////////////////////////////////////////////////////////////////// |
70 | |
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71 llvm::Module* Module::genLLVMModule(Ir* sir) |
1 | 72 { |
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73 bool logenabled = Logger::enabled(); |
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74 if (llvmForceLogging && !logenabled) |
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75 { |
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76 Logger::enable(); |
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77 } |
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78 |
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79 Logger::println("Generating module: %s\n", (md ? md->toChars() : toChars())); |
1 | 80 LOG_SCOPE; |
81 | |
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82 //printf("codegen: %s\n", srcfile->toChars()); |
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83 |
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84 assert(!global.errors); |
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85 |
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86 // name the module |
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87 std::string mname(toChars()); |
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88 if (md != 0) |
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89 mname = md->toChars(); |
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90 |
18 | 91 // create a new ir state |
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92 // TODO look at making the instance static and moving most functionality into IrModule where it belongs |
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93 IRState ir(new llvm::Module(mname)); |
1 | 94 gIR = &ir; |
95 ir.dmodule = this; | |
96 | |
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97 // reset all IR data stored in Dsymbols and Types |
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98 IrDsymbol::resetAll(); |
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99 IrType::resetAll(); |
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100 |
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101 sir->setState(&ir); |
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102 |
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103 // module ir state |
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104 // might already exist via import, just overwrite since |
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105 // the global created for the filename must belong to the right llvm module |
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106 // FIXME: but shouldn't this always get reset between modules? like other IrSymbols |
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107 this->ir.irModule = new IrModule(this, srcfile->toChars()); |
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108 |
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109 // set target triple |
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110 ir.module->setTargetTriple(global.params.targetTriple); |
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111 |
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112 // set final data layout |
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113 ir.module->setDataLayout(global.params.dataLayout); |
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114 if (Logger::enabled()) |
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115 Logger::cout() << "Final data layout: " << global.params.dataLayout << '\n'; |
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116 |
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117 // allocate the target abi |
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118 gABI = TargetABI::getTarget(); |
1 | 119 |
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120 // debug info |
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121 if (global.params.symdebug) { |
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122 RegisterDwarfSymbols(ir.module); |
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123 DtoDwarfCompileUnit(this); |
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124 } |
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125 |
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126 // handle invalid 'objectø module |
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127 if (!ClassDeclaration::object) { |
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128 error("is missing 'class Object'"); |
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129 fatal(); |
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130 } |
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131 if (!ClassDeclaration::classinfo) { |
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132 error("is missing 'class ClassInfo'"); |
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133 fatal(); |
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134 } |
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135 |
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136 LLVM_D_InitRuntime(); |
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137 |
6 | 138 // process module members |
1 | 139 for (int k=0; k < members->dim; k++) { |
140 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
141 assert(dsym); | |
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142 dsym->codegen(sir); |
1 | 143 } |
144 | |
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145 // emit function bodies |
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146 sir->emitFunctionBodies(); |
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147 |
89 | 148 // generate ModuleInfo |
149 genmoduleinfo(); | |
150 | |
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151 // emit usedArray |
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152 if (!ir.usedArray.empty()) |
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153 { |
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154 const LLArrayType* usedTy = LLArrayType::get(getVoidPtrType(), ir.usedArray.size()); |
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155 LLConstant* usedInit = LLConstantArray::get(usedTy, ir.usedArray); |
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156 LLGlobalVariable* usedArray = new LLGlobalVariable(usedTy, true, LLGlobalValue::AppendingLinkage, usedInit, "llvm.used", ir.module); |
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157 usedArray->setSection("llvm.metadata"); |
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158 } |
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159 |
6 | 160 // verify the llvm |
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161 if (!noVerify) { |
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162 std::string verifyErr; |
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163 Logger::println("Verifying module..."); |
117 | 164 LOG_SCOPE; |
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165 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) |
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166 { |
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167 error("%s", verifyErr.c_str()); |
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168 fatal(); |
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169 } |
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170 else { |
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171 Logger::println("Verification passed!"); |
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172 } |
1 | 173 } |
174 | |
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175 gIR = NULL; |
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176 |
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177 if (llvmForceLogging && !logenabled) |
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178 { |
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179 Logger::disable(); |
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180 } |
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181 |
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182 sir->setState(NULL); |
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183 |
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184 return ir.module; |
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185 } |
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186 |
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187 void writeModule(llvm::Module* m, std::string filename) |
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188 { |
125 | 189 // run optimizer |
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190 bool reverify = ldc_optimize_module(m); |
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192 // verify the llvm |
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193 if (!noVerify && reverify) { |
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194 std::string verifyErr; |
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195 Logger::println("Verifying module... again..."); |
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196 LOG_SCOPE; |
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197 if (llvm::verifyModule(*m,llvm::ReturnStatusAction,&verifyErr)) |
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198 { |
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199 //error("%s", verifyErr.c_str()); |
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200 fatal(); |
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201 } |
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202 else { |
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203 Logger::println("Verification passed!"); |
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204 } |
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205 } |
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206 |
217
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207 // eventually do our own path stuff, dmd's is a bit strange. |
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208 typedef llvm::sys::Path LLPath; |
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209 |
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210 // write LLVM bitcode |
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211 if (global.params.output_bc) { |
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212 LLPath bcpath = LLPath(filename); |
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213 bcpath.eraseSuffix(); |
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214 bcpath.appendSuffix(std::string(global.bc_ext)); |
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215 Logger::println("Writing LLVM bitcode to: %s\n", bcpath.c_str()); |
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216 std::ofstream bos(bcpath.c_str(), std::ios::binary); |
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217 llvm::WriteBitcodeToFile(m, bos); |
52 | 218 } |
1 | 219 |
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220 // write LLVM IR |
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221 if (global.params.output_ll) { |
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222 LLPath llpath = LLPath(filename); |
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223 llpath.eraseSuffix(); |
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224 llpath.appendSuffix(std::string(global.ll_ext)); |
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225 Logger::println("Writing LLVM asm to: %s\n", llpath.c_str()); |
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226 std::ofstream aos(llpath.c_str()); |
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227 m->print(aos, NULL); |
52 | 228 } |
1 | 229 |
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230 // write native assembly |
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231 if (global.params.output_s || global.params.output_o) { |
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232 LLPath spath = LLPath(filename); |
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233 spath.eraseSuffix(); |
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234 spath.appendSuffix(std::string(global.s_ext)); |
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235 if (!global.params.output_s) { |
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236 spath.createTemporaryFileOnDisk(); |
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237 } |
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238 Logger::println("Writing native asm to: %s\n", spath.c_str()); |
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239 std::string err; |
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240 { |
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241 llvm::raw_fd_ostream out(spath.c_str(), false, err); |
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242 write_asm_to_file(*gTargetMachine, *m, out); |
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243 } |
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244 |
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245 // call gcc to convert assembly to object file |
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246 if (global.params.output_o) { |
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247 LLPath objpath = LLPath(filename); |
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248 assemble(spath, objpath); |
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249 } |
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250 |
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251 if (!global.params.output_s) { |
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252 spath.eraseFromDisk(); |
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253 } |
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254 } |
1 | 255 } |
256 | |
257 /* ================================================================== */ | |
258 | |
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259 // based on llc code, University of Illinois Open Source License |
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260 void write_asm_to_file(llvm::TargetMachine &Target, llvm::Module& m, llvm::raw_fd_ostream& out) |
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261 { |
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262 using namespace llvm; |
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263 |
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264 // Build up all of the passes that we want to do to the module. |
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265 ExistingModuleProvider Provider(&m); |
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266 FunctionPassManager Passes(&Provider); |
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267 |
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268 Passes.add(new TargetData(*Target.getTargetData())); |
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269 |
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270 // Ask the target to add backend passes as necessary. |
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271 MachineCodeEmitter *MCE = 0; |
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272 |
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273 //TODO: May want to switch it on for -O0? |
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274 bool Fast = false; |
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275 FileModel::Model mod = Target.addPassesToEmitFile(Passes, out, TargetMachine::AssemblyFile, Fast); |
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276 assert(mod == FileModel::AsmFile); |
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277 |
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278 bool err = Target.addPassesToEmitFileFinish(Passes, MCE, Fast); |
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279 assert(!err); |
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280 |
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281 Passes.doInitialization(); |
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282 |
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283 // Run our queue of passes all at once now, efficiently. |
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284 for (llvm::Module::iterator I = m.begin(), E = m.end(); I != E; ++I) |
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285 if (!I->isDeclaration()) |
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286 Passes.run(*I); |
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287 |
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288 Passes.doFinalization(); |
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289 |
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290 // release module from module provider so we can delete it ourselves |
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291 std::string Err; |
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292 llvm::Module* rmod = Provider.releaseModule(&Err); |
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293 assert(rmod); |
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294 } |
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295 |
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296 /* ================================================================== */ |
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297 |
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298 // uses gcc to make an obj out of an assembly file |
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299 // based on llvm-ld code, University of Illinois Open Source License |
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300 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath) |
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301 { |
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302 using namespace llvm; |
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303 |
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304 const char *cc; |
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305 #if !_WIN32 |
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306 cc = getenv("CC"); |
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307 if (!cc) |
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308 #endif |
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309 cc = "gcc"; |
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310 |
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311 sys::Path gcc = llvm::sys::Program::FindProgramByName(cc); |
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312 if (gcc.empty()) |
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313 { |
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314 error("failed to locate gcc"); |
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315 fatal(); |
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316 } |
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317 |
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318 // Run GCC to assemble and link the program into native code. |
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319 // |
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320 // Note: |
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321 // We can't just assemble and link the file with the system assembler |
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322 // and linker because we don't know where to put the _start symbol. |
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323 // GCC mysteriously knows how to do it. |
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324 std::vector<std::string> args; |
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325 args.push_back(gcc.toString()); |
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326 args.push_back("-fno-strict-aliasing"); |
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327 args.push_back("-O3"); |
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328 args.push_back("-c"); |
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329 args.push_back("-xassembler"); |
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330 args.push_back(asmpath.toString()); |
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331 args.push_back("-o"); |
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332 args.push_back(objpath.toString()); |
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333 |
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334 //FIXME: only use this if needed? |
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335 args.push_back("-fpic"); |
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336 |
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337 //FIXME: enforce 64 bit |
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338 if (global.params.is64bit) |
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339 args.push_back("-m64"); |
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340 else |
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341 // Assume 32-bit? |
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342 args.push_back("-m32"); |
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343 |
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344 // Now that "args" owns all the std::strings for the arguments, call the c_str |
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345 // method to get the underlying string array. We do this game so that the |
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346 // std::string array is guaranteed to outlive the const char* array. |
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347 std::vector<const char *> Args; |
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348 for (unsigned i = 0, e = args.size(); i != e; ++i) |
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349 Args.push_back(args[i].c_str()); |
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350 Args.push_back(0); |
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351 |
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352 if (Logger::enabled()) { |
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353 Logger::println("Assembling with: "); |
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354 std::vector<const char*>::const_iterator I = Args.begin(), E = Args.end(); |
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355 std::ostream& logstr = *Logger::cout().stream(); |
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356 for (; I != E; ++I) |
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357 if (*I) |
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358 logstr << "'" << *I << "'" << " "; |
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359 logstr << "\n" << std::flush; |
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360 } |
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361 |
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362 // Run the compiler to assembly the program. |
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363 std::string ErrMsg; |
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364 int R = sys::Program::ExecuteAndWait( |
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365 gcc, &Args[0], 0, 0, 0, 0, &ErrMsg); |
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366 if (R) |
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367 { |
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368 error("Failed to invoke gcc. %s", ErrMsg.c_str()); |
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369 fatal(); |
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370 } |
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371 } |
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372 |
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373 |
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374 /* ================================================================== */ |
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375 |
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376 // the following code generates functions and needs to output |
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377 // debug info. these macros are useful for that |
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378 #define DBG_TYPE ( getPtrToType(llvm::StructType::get(NULL,NULL)) ) |
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379 #define DBG_CAST(X) ( llvm::ConstantExpr::getBitCast(X, DBG_TYPE) ) |
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380 |
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381 // build module ctor |
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382 |
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383 llvm::Function* build_module_ctor() |
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384 { |
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385 if (gIR->ctors.empty()) |
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386 return NULL; |
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387 |
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388 size_t n = gIR->ctors.size(); |
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389 if (n == 1) |
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390 return gIR->ctors[0]->ir.irFunc->func; |
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391 |
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392 std::string name("_D"); |
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393 name.append(gIR->dmodule->mangle()); |
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394 name.append("6__ctorZ"); |
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395 |
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396 std::vector<const LLType*> argsTy; |
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397 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 398 assert(gIR->module->getFunction(name) == NULL); |
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399 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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400 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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401 |
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402 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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403 IRBuilder<> builder(bb); |
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404 |
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405 // debug info |
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406 LLGlobalVariable* subprog; |
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407 if(global.params.symdebug) { |
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408 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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409 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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410 } |
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411 |
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412 for (size_t i=0; i<n; i++) { |
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413 llvm::Function* f = gIR->ctors[i]->ir.irFunc->func; |
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414 llvm::CallInst* call = builder.CreateCall(f,""); |
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415 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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416 } |
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417 |
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418 // debug info end |
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419 if(global.params.symdebug) |
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420 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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421 |
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422 builder.CreateRetVoid(); |
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423 return fn; |
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424 } |
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425 |
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426 // build module dtor |
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427 |
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428 static llvm::Function* build_module_dtor() |
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429 { |
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430 if (gIR->dtors.empty()) |
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431 return NULL; |
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432 |
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433 size_t n = gIR->dtors.size(); |
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434 if (n == 1) |
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435 return gIR->dtors[0]->ir.irFunc->func; |
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436 |
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437 std::string name("_D"); |
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438 name.append(gIR->dmodule->mangle()); |
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439 name.append("6__dtorZ"); |
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440 |
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441 std::vector<const LLType*> argsTy; |
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442 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 443 assert(gIR->module->getFunction(name) == NULL); |
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444 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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445 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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446 |
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447 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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448 IRBuilder<> builder(bb); |
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449 |
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450 // debug info |
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451 LLGlobalVariable* subprog; |
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452 if(global.params.symdebug) { |
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453 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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454 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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455 } |
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456 |
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457 for (size_t i=0; i<n; i++) { |
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458 llvm::Function* f = gIR->dtors[i]->ir.irFunc->func; |
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459 llvm::CallInst* call = builder.CreateCall(f,""); |
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460 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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461 } |
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462 |
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463 // debug info end |
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464 if(global.params.symdebug) |
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465 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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466 |
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467 builder.CreateRetVoid(); |
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468 return fn; |
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469 } |
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470 |
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471 // build module unittest |
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472 |
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473 static llvm::Function* build_module_unittest() |
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474 { |
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475 if (gIR->unitTests.empty()) |
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476 return NULL; |
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477 |
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478 size_t n = gIR->unitTests.size(); |
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479 if (n == 1) |
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480 return gIR->unitTests[0]->ir.irFunc->func; |
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481 |
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482 std::string name("_D"); |
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483 name.append(gIR->dmodule->mangle()); |
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484 name.append("10__unittestZ"); |
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485 |
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486 std::vector<const LLType*> argsTy; |
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487 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 488 assert(gIR->module->getFunction(name) == NULL); |
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489 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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490 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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491 |
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492 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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493 IRBuilder<> builder(bb); |
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494 |
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495 // debug info |
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496 LLGlobalVariable* subprog; |
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497 if(global.params.symdebug) { |
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498 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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499 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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500 } |
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501 |
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502 for (size_t i=0; i<n; i++) { |
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503 llvm::Function* f = gIR->unitTests[i]->ir.irFunc->func; |
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504 llvm::CallInst* call = builder.CreateCall(f,""); |
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505 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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506 } |
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507 |
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508 // debug info end |
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509 if(global.params.symdebug) |
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510 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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511 |
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512 builder.CreateRetVoid(); |
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513 return fn; |
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514 } |
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515 |
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516 // build ModuleReference and register function, to register the module info in the global linked list |
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517 static LLFunction* build_module_reference_and_ctor(LLConstant* moduleinfo) |
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518 { |
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519 // build ctor type |
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520 const LLFunctionType* fty = LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false); |
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521 |
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522 // build ctor name |
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523 std::string fname = "_D"; |
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524 fname += gIR->dmodule->mangle(); |
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525 fname += "16__moduleinfoCtorZ"; |
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526 |
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527 // build a function that registers the moduleinfo in the global moduleinfo linked list |
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528 LLFunction* ctor = LLFunction::Create(fty, LLGlobalValue::InternalLinkage, fname, gIR->module); |
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529 |
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530 // provide the default initializer |
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531 const LLStructType* modulerefTy = DtoModuleReferenceType(); |
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532 std::vector<LLConstant*> mrefvalues; |
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533 mrefvalues.push_back(LLConstant::getNullValue(modulerefTy->getContainedType(0))); |
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534 mrefvalues.push_back(llvm::ConstantExpr::getBitCast(moduleinfo, modulerefTy->getContainedType(1))); |
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535 LLConstant* thismrefinit = LLConstantStruct::get(modulerefTy, mrefvalues); |
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536 |
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537 // create the ModuleReference node for this module |
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538 std::string thismrefname = "_D"; |
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539 thismrefname += gIR->dmodule->mangle(); |
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540 thismrefname += "11__moduleRefZ"; |
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541 LLGlobalVariable* thismref = new LLGlobalVariable(modulerefTy, false, LLGlobalValue::InternalLinkage, thismrefinit, thismrefname, gIR->module); |
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542 |
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543 // make sure _Dmodule_ref is declared |
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544 LLGlobalVariable* mref = gIR->module->getNamedGlobal("_Dmodule_ref"); |
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545 if (!mref) |
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546 mref = new LLGlobalVariable(getPtrToType(modulerefTy), false, LLGlobalValue::ExternalLinkage, NULL, "_Dmodule_ref", gIR->module); |
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547 |
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548 // make the function insert this moduleinfo as the beginning of the _Dmodule_ref linked list |
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549 llvm::BasicBlock* bb = llvm::BasicBlock::Create("moduleinfoCtorEntry", ctor); |
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550 IRBuilder<> builder(bb); |
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551 |
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552 // debug info |
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553 LLGlobalVariable* subprog; |
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554 if(global.params.symdebug) { |
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555 subprog = DtoDwarfSubProgramInternal(fname.c_str(), fname.c_str()).getGV(); |
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556 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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557 } |
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558 |
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559 // get current beginning |
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560 LLValue* curbeg = builder.CreateLoad(mref, "current"); |
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561 |
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562 // put current beginning as the next of this one |
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563 LLValue* gep = builder.CreateStructGEP(thismref, 0, "next"); |
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564 builder.CreateStore(curbeg, gep); |
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565 |
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566 // replace beginning |
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567 builder.CreateStore(thismref, mref); |
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568 |
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569 // debug info end |
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570 if(global.params.symdebug) |
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571 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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572 |
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573 // return |
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574 builder.CreateRetVoid(); |
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575 |
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576 return ctor; |
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577 } |
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578 |
1 | 579 // Put out instance of ModuleInfo for this Module |
580 | |
581 void Module::genmoduleinfo() | |
582 { | |
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583 // The layout is: |
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584 // { |
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585 // char[] name; |
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586 // ModuleInfo[] importedModules; |
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587 // ClassInfo[] localClasses; |
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588 // uint flags; |
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589 // |
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590 // void function() ctor; |
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591 // void function() dtor; |
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592 // void function() unitTest; |
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593 // |
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594 // void* xgetMembers; |
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595 // void function() ictor; |
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596 // } |
89 | 597 |
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598 // resolve ModuleInfo |
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599 if (!moduleinfo) |
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600 { |
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601 error("object.d is missing the ModuleInfo class"); |
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602 fatal(); |
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603 } |
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604 |
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605 moduleinfo->codegen(Type::sir); |
89 | 606 |
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607 // check for patch |
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608 if (moduleinfo->fields.dim != 9) |
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609 { |
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610 error("object.d ModuleInfo class is incorrect"); |
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611 fatal(); |
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612 } |
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613 |
116
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614 // moduleinfo llvm struct type |
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615 const llvm::StructType* moduleinfoTy = isaStruct(moduleinfo->type->ir.type->get()); |
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616 // classinfo llvm struct type |
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617 const llvm::StructType* classinfoTy = isaStruct(ClassDeclaration::classinfo->type->ir.type->get()); |
89 | 618 |
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619 // initializer vector |
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620 std::vector<LLConstant*> initVec; |
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621 LLConstant* c = 0; |
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622 |
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623 // vtable |
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624 c = moduleinfo->ir.irStruct->vtbl; |
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625 initVec.push_back(c); |
89 | 626 |
116
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627 // monitor |
244
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628 c = getNullPtr(getPtrToType(LLType::Int8Ty)); |
116
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629 initVec.push_back(c); |
89 | 630 |
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631 // name |
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632 char *name = toPrettyChars(); |
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633 c = DtoConstString(name); |
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634 initVec.push_back(c); |
89 | 635 |
636 // importedModules[] | |
637 int aimports_dim = aimports.dim; | |
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638 std::vector<LLConstant*> importInits; |
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639 for (size_t i = 0; i < aimports.dim; i++) |
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640 { |
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641 Module *m = (Module *)aimports.data[i]; |
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642 if (!m->needModuleInfo() || m == this) |
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643 continue; |
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644 |
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645 // declare the imported module info |
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646 std::string m_name("_D"); |
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647 m_name.append(m->mangle()); |
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648 m_name.append("8__ModuleZ"); |
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649 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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650 if (!m_gvar) m_gvar = new llvm::GlobalVariable(moduleinfoTy, false, llvm::GlobalValue::ExternalLinkage, NULL, m_name, gIR->module); |
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651 importInits.push_back(m_gvar); |
89 | 652 } |
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653 // has import array? |
133
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654 if (!importInits.empty()) |
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655 { |
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656 const llvm::ArrayType* importArrTy = llvm::ArrayType::get(getPtrToType(moduleinfoTy), importInits.size()); |
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657 c = llvm::ConstantArray::get(importArrTy, importInits); |
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658 std::string m_name("_D"); |
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659 m_name.append(mangle()); |
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660 m_name.append("9__importsZ"); |
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661 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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662 if (!m_gvar) m_gvar = new llvm::GlobalVariable(importArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name, gIR->module); |
133
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663 c = llvm::ConstantExpr::getBitCast(m_gvar, getPtrToType(importArrTy->getElementType())); |
116
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664 c = DtoConstSlice(DtoConstSize_t(importInits.size()), c); |
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665 } |
89 | 666 else |
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667 c = DtoConstSlice( DtoConstSize_t(0), getNullValue(getPtrToType(moduleinfoTy)) ); |
116
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668 initVec.push_back(c); |
89 | 669 |
670 // localClasses[] | |
116
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671 ClassDeclarations aclasses; |
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672 //printf("members->dim = %d\n", members->dim); |
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673 for (size_t i = 0; i < members->dim; i++) |
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674 { |
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675 Dsymbol *member; |
89 | 676 |
116
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677 member = (Dsymbol *)members->data[i]; |
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678 //printf("\tmember '%s'\n", member->toChars()); |
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679 member->addLocalClass(&aclasses); |
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680 } |
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681 // fill inits |
213
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682 std::vector<LLConstant*> classInits; |
116
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683 for (size_t i = 0; i < aclasses.dim; i++) |
89 | 684 { |
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685 ClassDeclaration* cd = (ClassDeclaration*)aclasses.data[i]; |
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686 cd->codegen(Type::sir); |
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687 |
133
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688 if (cd->isInterfaceDeclaration()) |
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689 { |
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690 Logger::println("skipping interface '%s' in moduleinfo", cd->toPrettyChars()); |
133
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691 continue; |
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692 } |
797
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693 else if (cd->sizeok != 1) |
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694 { |
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695 Logger::println("skipping opaque class declaration '%s' in moduleinfo", cd->toPrettyChars()); |
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696 continue; |
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697 } |
132 | 698 Logger::println("class: %s", cd->toPrettyChars()); |
173
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699 assert(cd->ir.irStruct->classInfo); |
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700 c = DtoBitCast(cd->ir.irStruct->classInfo, getPtrToType(classinfoTy)); |
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701 classInits.push_back(c); |
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702 } |
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703 // has class array? |
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704 if (!classInits.empty()) |
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705 { |
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706 const llvm::ArrayType* classArrTy = llvm::ArrayType::get(getPtrToType(classinfoTy), classInits.size()); |
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707 c = llvm::ConstantArray::get(classArrTy, classInits); |
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708 std::string m_name("_D"); |
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709 m_name.append(mangle()); |
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710 m_name.append("9__classesZ"); |
184 | 711 assert(gIR->module->getGlobalVariable(m_name) == NULL); |
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712 llvm::GlobalVariable* m_gvar = new llvm::GlobalVariable(classArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name, gIR->module); |
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713 c = DtoBitCast(m_gvar, getPtrToType(classinfoTy)); |
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714 c = DtoConstSlice(DtoConstSize_t(classInits.size()), c); |
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715 } |
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716 else |
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717 c = DtoConstSlice( DtoConstSize_t(0), getNullValue(getPtrToType(classinfoTy)) ); |
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718 initVec.push_back(c); |
89 | 719 |
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720 // flags |
132 | 721 c = DtoConstUint(0); |
722 if (!needmoduleinfo) | |
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723 c = DtoConstUint(4); // flags (4 means MIstandalone) |
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724 initVec.push_back(c); |
89 | 725 |
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726 // function pointer type for next three fields |
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727 const LLType* fnptrTy = getPtrToType(LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false)); |
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728 |
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729 // ctor |
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730 llvm::Function* fctor = build_module_ctor(); |
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731 c = fctor ? fctor : getNullValue(fnptrTy); |
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732 initVec.push_back(c); |
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733 |
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734 // dtor |
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735 llvm::Function* fdtor = build_module_dtor(); |
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736 c = fdtor ? fdtor : getNullValue(fnptrTy); |
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737 initVec.push_back(c); |
89 | 738 |
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739 // unitTest |
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740 llvm::Function* unittest = build_module_unittest(); |
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741 c = unittest ? unittest : getNullValue(fnptrTy); |
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742 initVec.push_back(c); |
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743 |
132 | 744 // xgetMembers |
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745 c = getNullValue(getVoidPtrType()); |
132 | 746 initVec.push_back(c); |
747 | |
748 // ictor | |
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749 c = getNullValue(fnptrTy); |
132 | 750 initVec.push_back(c); |
751 | |
752 /*Logger::println("MODULE INFO INITIALIZERS"); | |
753 for (size_t i=0; i<initVec.size(); ++i) | |
754 { | |
755 Logger::cout() << *initVec[i] << '\n'; | |
756 if (initVec[i]->getType() != moduleinfoTy->getElementType(i)) | |
757 assert(0); | |
758 }*/ | |
759 | |
116
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760 // create initializer |
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761 LLConstant* constMI = llvm::ConstantStruct::get(initVec); |
89 | 762 |
116
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763 // create name |
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764 std::string MIname("_D"); |
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765 MIname.append(mangle()); |
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766 MIname.append("8__ModuleZ"); |
89 | 767 |
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768 // declare global |
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769 // flags will be modified at runtime so can't make it constant |
184 | 770 |
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771 // it makes no sense that the our own module info already exists! |
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772 assert(!gIR->module->getGlobalVariable(MIname)); |
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773 llvm::GlobalVariable* gvar = new llvm::GlobalVariable(constMI->getType(), false, llvm::GlobalValue::ExternalLinkage, constMI, MIname, gIR->module); |
117 | 774 |
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775 // build the modulereference and ctor for registering it |
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776 LLFunction* mictor = build_module_reference_and_ctor(gvar); |
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777 |
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778 // register this ctor in the magic llvm.global_ctors appending array |
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779 const LLFunctionType* magicfty = LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false); |
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780 std::vector<const LLType*> magictypes; |
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781 magictypes.push_back(LLType::Int32Ty); |
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782 magictypes.push_back(getPtrToType(magicfty)); |
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783 const LLStructType* magicsty = LLStructType::get(magictypes); |
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784 |
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785 // make the constant element |
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786 std::vector<LLConstant*> magicconstants; |
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787 magicconstants.push_back(DtoConstUint(65535)); |
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788 magicconstants.push_back(mictor); |
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789 LLConstant* magicinit = LLConstantStruct::get(magicsty, magicconstants); |
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790 |
117 | 791 // declare the appending array |
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792 const llvm::ArrayType* appendArrTy = llvm::ArrayType::get(magicsty, 1); |
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793 std::vector<LLConstant*> appendInits(1, magicinit); |
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794 LLConstant* appendInit = llvm::ConstantArray::get(appendArrTy, appendInits); |
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795 std::string appendName("llvm.global_ctors"); |
117 | 796 llvm::GlobalVariable* appendVar = new llvm::GlobalVariable(appendArrTy, true, llvm::GlobalValue::AppendingLinkage, appendInit, appendName, gIR->module); |
1 | 797 } |