Mercurial > projects > ldc
annotate gen/toobj.cpp @ 1147:dbe4af57b240
Changed use of toObjFile to a new codegen method.
More versioning of DMD specific codegen code.
author | Tomas Lindquist Olsen <tomas.l.olsen gmail.com> |
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date | Fri, 27 Mar 2009 17:54:27 +0100 |
parents | 1860414bf3b7 |
children | 3d1b16dabd25 |
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" |
1 | 52 |
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53 #include "ir/irvar.h" |
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54 #include "ir/irmodule.h" |
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55 |
1 | 56 ////////////////////////////////////////////////////////////////////////////////////////// |
57 | |
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58 static llvm::cl::opt<bool> noVerify("noverify", |
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59 llvm::cl::desc("Do not run the validation pass before writing bitcode"), |
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60 llvm::cl::ZeroOrMore); |
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61 |
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62 ////////////////////////////////////////////////////////////////////////////////////////// |
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63 |
125 | 64 // in gen/optimize.cpp |
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65 void ldc_optimize_module(llvm::Module* m, char lvl, bool doinline); |
125 | 66 |
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67 // fwd decl |
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68 void write_asm_to_file(llvm::TargetMachine &Target, llvm::Module& m, llvm::raw_fd_ostream& Out); |
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69 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath); |
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70 |
125 | 71 ////////////////////////////////////////////////////////////////////////////////////////// |
72 | |
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73 llvm::Module* Module::genLLVMModule(Ir* sir) |
1 | 74 { |
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75 bool logenabled = Logger::enabled(); |
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76 if (llvmForceLogging && !logenabled) |
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77 { |
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78 Logger::enable(); |
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79 } |
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80 |
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81 Logger::println("Generating module: %s\n", (md ? md->toChars() : toChars())); |
1 | 82 LOG_SCOPE; |
83 | |
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84 //printf("codegen: %s\n", srcfile->toChars()); |
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85 |
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86 assert(!global.errors); |
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87 |
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88 // name the module |
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89 std::string mname(toChars()); |
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90 if (md != 0) |
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91 mname = md->toChars(); |
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92 |
18 | 93 // create a new ir state |
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94 // TODO look at making the instance static and moving most functionality into IrModule where it belongs |
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95 IRState ir(new llvm::Module(mname)); |
1 | 96 gIR = &ir; |
97 ir.dmodule = this; | |
98 | |
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99 // reset all IR data stored in Dsymbols and Types |
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100 IrDsymbol::resetAll(); |
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101 IrType::resetAll(); |
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102 |
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103 sir->setState(&ir); |
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104 |
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105 // module ir state |
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106 // might already exist via import, just overwrite since |
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107 // the global created for the filename must belong to the right llvm module |
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108 // FIXME: but shouldn't this always get reset between modules? like other IrSymbols |
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109 this->ir.irModule = new IrModule(this, srcfile->toChars()); |
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110 |
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111 // set target triple |
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112 ir.module->setTargetTriple(global.params.targetTriple); |
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113 |
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114 // set final data layout |
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115 ir.module->setDataLayout(global.params.dataLayout); |
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116 if (Logger::enabled()) |
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117 Logger::cout() << "Final data layout: " << global.params.dataLayout << '\n'; |
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118 |
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119 // allocate the target abi |
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120 gABI = TargetABI::getTarget(); |
1 | 121 |
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122 // debug info |
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123 if (global.params.symdebug) { |
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124 RegisterDwarfSymbols(ir.module); |
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125 DtoDwarfCompileUnit(this); |
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126 } |
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127 |
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128 // handle invalid 'objectø module |
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129 if (!ClassDeclaration::object) { |
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130 error("is missing 'class Object'"); |
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131 fatal(); |
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132 } |
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133 if (!ClassDeclaration::classinfo) { |
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134 error("is missing 'class ClassInfo'"); |
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135 fatal(); |
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136 } |
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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 | |
89 | 145 // generate ModuleInfo |
146 genmoduleinfo(); | |
147 | |
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148 // emit usedArray |
323
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149 if (!ir.usedArray.empty()) |
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150 { |
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151 const LLArrayType* usedTy = LLArrayType::get(getVoidPtrType(), ir.usedArray.size()); |
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152 LLConstant* usedInit = LLConstantArray::get(usedTy, ir.usedArray); |
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153 LLGlobalVariable* usedArray = new LLGlobalVariable(usedTy, true, LLGlobalValue::AppendingLinkage, usedInit, "llvm.used", ir.module); |
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154 usedArray->setSection("llvm.metadata"); |
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155 } |
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156 |
6 | 157 // verify the llvm |
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158 if (!noVerify) { |
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159 std::string verifyErr; |
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160 Logger::println("Verifying module..."); |
117 | 161 LOG_SCOPE; |
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162 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) |
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163 { |
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164 error("%s", verifyErr.c_str()); |
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165 fatal(); |
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166 } |
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167 else { |
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168 Logger::println("Verification passed!"); |
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169 } |
1 | 170 } |
171 | |
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172 gIR = NULL; |
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173 |
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174 if (llvmForceLogging && !logenabled) |
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175 { |
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176 Logger::disable(); |
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177 } |
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178 |
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179 sir->setState(NULL); |
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180 |
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181 return ir.module; |
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182 } |
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183 |
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184 void writeModule(llvm::Module* m, std::string filename) |
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185 { |
125 | 186 // run optimizer |
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187 ldc_optimize_module(m, global.params.optimizeLevel, global.params.llvmInline); |
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189 // verify the llvm |
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190 if (!noVerify && (global.params.optimizeLevel >= 0 || global.params.llvmInline)) { |
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191 std::string verifyErr; |
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192 Logger::println("Verifying module... again..."); |
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193 LOG_SCOPE; |
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194 if (llvm::verifyModule(*m,llvm::ReturnStatusAction,&verifyErr)) |
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195 { |
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196 //error("%s", verifyErr.c_str()); |
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197 fatal(); |
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198 } |
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199 else { |
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200 Logger::println("Verification passed!"); |
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201 } |
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202 } |
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203 |
217
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204 // eventually do our own path stuff, dmd's is a bit strange. |
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205 typedef llvm::sys::Path LLPath; |
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206 |
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207 // write LLVM bitcode |
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208 if (global.params.output_bc) { |
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209 LLPath bcpath = LLPath(filename); |
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210 bcpath.eraseSuffix(); |
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211 bcpath.appendSuffix(std::string(global.bc_ext)); |
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212 Logger::println("Writing LLVM bitcode to: %s\n", bcpath.c_str()); |
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213 std::ofstream bos(bcpath.c_str(), std::ios::binary); |
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214 llvm::WriteBitcodeToFile(m, bos); |
52 | 215 } |
1 | 216 |
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217 // write LLVM IR |
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218 if (global.params.output_ll) { |
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219 LLPath llpath = LLPath(filename); |
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220 llpath.eraseSuffix(); |
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221 llpath.appendSuffix(std::string(global.ll_ext)); |
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222 Logger::println("Writing LLVM asm to: %s\n", llpath.c_str()); |
217
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223 std::ofstream aos(llpath.c_str()); |
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224 m->print(aos, NULL); |
52 | 225 } |
1 | 226 |
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227 // write native assembly |
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228 if (global.params.output_s || global.params.output_o) { |
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229 LLPath spath = LLPath(filename); |
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230 spath.eraseSuffix(); |
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231 spath.appendSuffix(std::string(global.s_ext)); |
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232 if (!global.params.output_s) { |
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233 spath.createTemporaryFileOnDisk(); |
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234 } |
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235 Logger::println("Writing native asm to: %s\n", spath.c_str()); |
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236 std::string err; |
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237 { |
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238 llvm::raw_fd_ostream out(spath.c_str(), false, err); |
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239 write_asm_to_file(*gTargetMachine, *m, out); |
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240 } |
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241 |
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242 // call gcc to convert assembly to object file |
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243 if (global.params.output_o) { |
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244 LLPath objpath = LLPath(filename); |
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245 assemble(spath, objpath); |
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246 } |
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247 |
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248 if (!global.params.output_s) { |
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249 spath.eraseFromDisk(); |
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250 } |
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251 } |
1 | 252 } |
253 | |
254 /* ================================================================== */ | |
255 | |
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256 // based on llc code, University of Illinois Open Source License |
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257 void write_asm_to_file(llvm::TargetMachine &Target, llvm::Module& m, llvm::raw_fd_ostream& out) |
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258 { |
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259 using namespace llvm; |
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260 |
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261 // Build up all of the passes that we want to do to the module. |
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262 ExistingModuleProvider Provider(&m); |
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263 FunctionPassManager Passes(&Provider); |
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264 |
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265 Passes.add(new TargetData(*Target.getTargetData())); |
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266 |
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267 // Ask the target to add backend passes as necessary. |
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268 MachineCodeEmitter *MCE = 0; |
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269 |
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270 //TODO: May want to switch it on for -O0? |
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271 bool Fast = false; |
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272 FileModel::Model mod = Target.addPassesToEmitFile(Passes, out, TargetMachine::AssemblyFile, Fast); |
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273 assert(mod == FileModel::AsmFile); |
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274 |
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275 bool err = Target.addPassesToEmitFileFinish(Passes, MCE, Fast); |
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276 assert(!err); |
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277 |
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278 Passes.doInitialization(); |
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279 |
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280 // Run our queue of passes all at once now, efficiently. |
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281 for (llvm::Module::iterator I = m.begin(), E = m.end(); I != E; ++I) |
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282 if (!I->isDeclaration()) |
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283 Passes.run(*I); |
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284 |
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285 Passes.doFinalization(); |
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286 |
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287 // release module from module provider so we can delete it ourselves |
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288 std::string Err; |
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289 llvm::Module* rmod = Provider.releaseModule(&Err); |
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290 assert(rmod); |
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291 } |
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292 |
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293 /* ================================================================== */ |
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294 |
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295 // uses gcc to make an obj out of an assembly file |
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296 // based on llvm-ld code, University of Illinois Open Source License |
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297 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath) |
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298 { |
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299 using namespace llvm; |
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300 |
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301 const char *cc; |
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302 #if !_WIN32 |
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303 cc = getenv("CC"); |
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304 if (!cc) |
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305 #endif |
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306 cc = "gcc"; |
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307 |
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308 sys::Path gcc = llvm::sys::Program::FindProgramByName(cc); |
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309 if (gcc.empty()) |
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310 { |
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311 error("failed to locate gcc"); |
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312 fatal(); |
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313 } |
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314 |
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315 // Run GCC to assemble and link the program into native code. |
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316 // |
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317 // Note: |
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318 // We can't just assemble and link the file with the system assembler |
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319 // and linker because we don't know where to put the _start symbol. |
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320 // GCC mysteriously knows how to do it. |
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321 std::vector<std::string> args; |
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322 args.push_back(gcc.toString()); |
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323 args.push_back("-fno-strict-aliasing"); |
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324 args.push_back("-O3"); |
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325 args.push_back("-c"); |
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326 args.push_back("-xassembler"); |
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327 args.push_back(asmpath.toString()); |
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328 args.push_back("-o"); |
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329 args.push_back(objpath.toString()); |
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330 |
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331 //FIXME: only use this if needed? |
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332 args.push_back("-fpic"); |
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333 |
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334 //FIXME: enforce 64 bit |
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335 if (global.params.is64bit) |
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336 args.push_back("-m64"); |
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337 else |
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338 // Assume 32-bit? |
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339 args.push_back("-m32"); |
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340 |
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341 // Now that "args" owns all the std::strings for the arguments, call the c_str |
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342 // method to get the underlying string array. We do this game so that the |
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343 // std::string array is guaranteed to outlive the const char* array. |
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344 std::vector<const char *> Args; |
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345 for (unsigned i = 0, e = args.size(); i != e; ++i) |
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346 Args.push_back(args[i].c_str()); |
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347 Args.push_back(0); |
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348 |
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349 if (Logger::enabled()) { |
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350 Logger::println("Assembling with: "); |
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351 std::vector<const char*>::const_iterator I = Args.begin(), E = Args.end(); |
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352 std::ostream& logstr = *Logger::cout().stream(); |
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353 for (; I != E; ++I) |
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354 if (*I) |
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355 logstr << "'" << *I << "'" << " "; |
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356 logstr << "\n" << std::flush; |
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357 } |
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358 |
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359 // Run the compiler to assembly the program. |
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360 std::string ErrMsg; |
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361 int R = sys::Program::ExecuteAndWait( |
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362 gcc, &Args[0], 0, 0, 0, 0, &ErrMsg); |
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363 if (R) |
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364 { |
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365 error("Failed to invoke gcc. %s", ErrMsg.c_str()); |
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366 fatal(); |
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367 } |
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368 } |
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369 |
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370 |
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371 /* ================================================================== */ |
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372 |
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373 // the following code generates functions and needs to output |
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374 // debug info. these macros are useful for that |
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375 #define DBG_TYPE ( getPtrToType(llvm::StructType::get(NULL,NULL)) ) |
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376 #define DBG_CAST(X) ( llvm::ConstantExpr::getBitCast(X, DBG_TYPE) ) |
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377 |
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378 // build module ctor |
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379 |
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380 llvm::Function* build_module_ctor() |
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381 { |
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382 if (gIR->ctors.empty()) |
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383 return NULL; |
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384 |
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385 size_t n = gIR->ctors.size(); |
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386 if (n == 1) |
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387 return gIR->ctors[0]->ir.irFunc->func; |
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388 |
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389 std::string name("_D"); |
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390 name.append(gIR->dmodule->mangle()); |
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391 name.append("6__ctorZ"); |
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392 |
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393 std::vector<const LLType*> argsTy; |
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394 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 395 assert(gIR->module->getFunction(name) == NULL); |
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396 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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397 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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398 |
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399 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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400 IRBuilder<> builder(bb); |
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401 |
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402 // debug info |
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403 LLGlobalVariable* subprog; |
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404 if(global.params.symdebug) { |
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405 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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406 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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407 } |
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408 |
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409 for (size_t i=0; i<n; i++) { |
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410 llvm::Function* f = gIR->ctors[i]->ir.irFunc->func; |
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411 llvm::CallInst* call = builder.CreateCall(f,""); |
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412 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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413 } |
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414 |
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415 // debug info end |
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416 if(global.params.symdebug) |
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417 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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418 |
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419 builder.CreateRetVoid(); |
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420 return fn; |
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421 } |
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422 |
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423 // build module dtor |
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424 |
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425 static llvm::Function* build_module_dtor() |
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426 { |
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427 if (gIR->dtors.empty()) |
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428 return NULL; |
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429 |
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430 size_t n = gIR->dtors.size(); |
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431 if (n == 1) |
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432 return gIR->dtors[0]->ir.irFunc->func; |
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433 |
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434 std::string name("_D"); |
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435 name.append(gIR->dmodule->mangle()); |
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436 name.append("6__dtorZ"); |
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437 |
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438 std::vector<const LLType*> argsTy; |
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439 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 440 assert(gIR->module->getFunction(name) == NULL); |
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441 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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442 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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443 |
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444 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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445 IRBuilder<> builder(bb); |
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446 |
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447 // debug info |
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448 LLGlobalVariable* subprog; |
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449 if(global.params.symdebug) { |
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450 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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451 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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452 } |
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453 |
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454 for (size_t i=0; i<n; i++) { |
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455 llvm::Function* f = gIR->dtors[i]->ir.irFunc->func; |
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456 llvm::CallInst* call = builder.CreateCall(f,""); |
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457 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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458 } |
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459 |
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460 // debug info end |
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461 if(global.params.symdebug) |
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462 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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463 |
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464 builder.CreateRetVoid(); |
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465 return fn; |
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466 } |
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467 |
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468 // build module unittest |
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469 |
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470 static llvm::Function* build_module_unittest() |
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471 { |
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472 if (gIR->unitTests.empty()) |
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473 return NULL; |
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474 |
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475 size_t n = gIR->unitTests.size(); |
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476 if (n == 1) |
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477 return gIR->unitTests[0]->ir.irFunc->func; |
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478 |
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479 std::string name("_D"); |
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480 name.append(gIR->dmodule->mangle()); |
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481 name.append("10__unittestZ"); |
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482 |
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483 std::vector<const LLType*> argsTy; |
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484 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 485 assert(gIR->module->getFunction(name) == NULL); |
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486 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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487 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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488 |
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489 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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490 IRBuilder<> builder(bb); |
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491 |
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492 // debug info |
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493 LLGlobalVariable* subprog; |
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494 if(global.params.symdebug) { |
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495 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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496 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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497 } |
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498 |
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499 for (size_t i=0; i<n; i++) { |
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500 llvm::Function* f = gIR->unitTests[i]->ir.irFunc->func; |
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501 llvm::CallInst* call = builder.CreateCall(f,""); |
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502 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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503 } |
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504 |
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505 // debug info end |
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506 if(global.params.symdebug) |
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507 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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508 |
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509 builder.CreateRetVoid(); |
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510 return fn; |
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511 } |
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512 |
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513 // build ModuleReference and register function, to register the module info in the global linked list |
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514 static LLFunction* build_module_reference_and_ctor(LLConstant* moduleinfo) |
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515 { |
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516 // build ctor type |
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517 const LLFunctionType* fty = LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false); |
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518 |
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519 // build ctor name |
324
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520 std::string fname = "_D"; |
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521 fname += gIR->dmodule->mangle(); |
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522 fname += "16__moduleinfoCtorZ"; |
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523 |
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524 // build a function that registers the moduleinfo in the global moduleinfo linked list |
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525 LLFunction* ctor = LLFunction::Create(fty, LLGlobalValue::InternalLinkage, fname, gIR->module); |
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526 |
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527 // provide the default initializer |
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528 const LLStructType* modulerefTy = DtoModuleReferenceType(); |
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529 std::vector<LLConstant*> mrefvalues; |
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530 mrefvalues.push_back(LLConstant::getNullValue(modulerefTy->getContainedType(0))); |
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531 mrefvalues.push_back(llvm::ConstantExpr::getBitCast(moduleinfo, modulerefTy->getContainedType(1))); |
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532 LLConstant* thismrefinit = LLConstantStruct::get(modulerefTy, mrefvalues); |
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533 |
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534 // create the ModuleReference node for this module |
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535 std::string thismrefname = "_D"; |
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536 thismrefname += gIR->dmodule->mangle(); |
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537 thismrefname += "11__moduleRefZ"; |
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538 LLGlobalVariable* thismref = new LLGlobalVariable(modulerefTy, false, LLGlobalValue::InternalLinkage, thismrefinit, thismrefname, gIR->module); |
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539 |
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540 // make sure _Dmodule_ref is declared |
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541 LLGlobalVariable* mref = gIR->module->getNamedGlobal("_Dmodule_ref"); |
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542 if (!mref) |
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543 mref = new LLGlobalVariable(getPtrToType(modulerefTy), false, LLGlobalValue::ExternalLinkage, NULL, "_Dmodule_ref", gIR->module); |
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544 |
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545 // make the function insert this moduleinfo as the beginning of the _Dmodule_ref linked list |
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546 llvm::BasicBlock* bb = llvm::BasicBlock::Create("moduleinfoCtorEntry", ctor); |
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547 IRBuilder<> builder(bb); |
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548 |
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549 // debug info |
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550 LLGlobalVariable* subprog; |
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551 if(global.params.symdebug) { |
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552 subprog = DtoDwarfSubProgramInternal(fname.c_str(), fname.c_str()).getGV(); |
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553 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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554 } |
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555 |
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556 // get current beginning |
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557 LLValue* curbeg = builder.CreateLoad(mref, "current"); |
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558 |
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559 // put current beginning as the next of this one |
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560 LLValue* gep = builder.CreateStructGEP(thismref, 0, "next"); |
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561 builder.CreateStore(curbeg, gep); |
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562 |
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563 // replace beginning |
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564 builder.CreateStore(thismref, mref); |
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565 |
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566 // debug info end |
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567 if(global.params.symdebug) |
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568 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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569 |
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570 // return |
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571 builder.CreateRetVoid(); |
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572 |
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573 return ctor; |
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574 } |
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575 |
1 | 576 // Put out instance of ModuleInfo for this Module |
577 | |
578 void Module::genmoduleinfo() | |
579 { | |
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580 // The layout is: |
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581 // { |
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582 // char[] name; |
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583 // ModuleInfo[] importedModules; |
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584 // ClassInfo[] localClasses; |
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585 // uint flags; |
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586 // |
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587 // void function() ctor; |
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588 // void function() dtor; |
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589 // void function() unitTest; |
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590 // |
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591 // void* xgetMembers; |
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592 // void function() ictor; |
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593 // } |
89 | 594 |
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595 // resolve ModuleInfo |
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596 if (!moduleinfo) |
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597 { |
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598 error("object.d is missing the ModuleInfo class"); |
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599 fatal(); |
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600 } |
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601 |
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602 DtoForceConstInitDsymbol(moduleinfo); |
89 | 603 |
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604 // check for patch |
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605 if (moduleinfo->fields.dim != 9) |
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606 { |
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607 error("object.d ModuleInfo class is incorrect"); |
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608 fatal(); |
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609 } |
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610 |
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611 // moduleinfo llvm struct type |
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612 const llvm::StructType* moduleinfoTy = isaStruct(moduleinfo->type->ir.type->get()); |
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613 // classinfo llvm struct type |
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614 const llvm::StructType* classinfoTy = isaStruct(ClassDeclaration::classinfo->type->ir.type->get()); |
89 | 615 |
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616 // initializer vector |
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617 std::vector<LLConstant*> initVec; |
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618 LLConstant* c = 0; |
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619 |
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620 // vtable |
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621 c = moduleinfo->ir.irStruct->vtbl; |
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622 initVec.push_back(c); |
89 | 623 |
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624 // monitor |
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625 c = getNullPtr(getPtrToType(LLType::Int8Ty)); |
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626 initVec.push_back(c); |
89 | 627 |
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628 // name |
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629 char *name = toPrettyChars(); |
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630 c = DtoConstString(name); |
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631 initVec.push_back(c); |
89 | 632 |
633 // importedModules[] | |
634 int aimports_dim = aimports.dim; | |
213
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635 std::vector<LLConstant*> importInits; |
116
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636 for (size_t i = 0; i < aimports.dim; i++) |
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637 { |
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638 Module *m = (Module *)aimports.data[i]; |
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639 if (!m->needModuleInfo() || m == this) |
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640 continue; |
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641 |
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642 // declare the imported module info |
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643 std::string m_name("_D"); |
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644 m_name.append(m->mangle()); |
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645 m_name.append("8__ModuleZ"); |
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646 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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647 if (!m_gvar) m_gvar = new llvm::GlobalVariable(moduleinfoTy, false, llvm::GlobalValue::ExternalLinkage, NULL, m_name, gIR->module); |
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648 importInits.push_back(m_gvar); |
89 | 649 } |
116
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650 // has import array? |
133
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651 if (!importInits.empty()) |
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652 { |
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653 const llvm::ArrayType* importArrTy = llvm::ArrayType::get(getPtrToType(moduleinfoTy), importInits.size()); |
116
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654 c = llvm::ConstantArray::get(importArrTy, importInits); |
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655 std::string m_name("_D"); |
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656 m_name.append(mangle()); |
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657 m_name.append("9__importsZ"); |
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658 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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659 if (!m_gvar) m_gvar = new llvm::GlobalVariable(importArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name, gIR->module); |
133
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660 c = llvm::ConstantExpr::getBitCast(m_gvar, getPtrToType(importArrTy->getElementType())); |
116
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661 c = DtoConstSlice(DtoConstSize_t(importInits.size()), c); |
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662 } |
89 | 663 else |
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664 c = DtoConstSlice( DtoConstSize_t(0), getNullValue(getPtrToType(moduleinfoTy)) ); |
116
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665 initVec.push_back(c); |
89 | 666 |
667 // localClasses[] | |
116
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668 ClassDeclarations aclasses; |
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669 //printf("members->dim = %d\n", members->dim); |
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670 for (size_t i = 0; i < members->dim; i++) |
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671 { |
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672 Dsymbol *member; |
89 | 673 |
116
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674 member = (Dsymbol *)members->data[i]; |
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675 //printf("\tmember '%s'\n", member->toChars()); |
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676 member->addLocalClass(&aclasses); |
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677 } |
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678 // fill inits |
213
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679 std::vector<LLConstant*> classInits; |
116
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680 for (size_t i = 0; i < aclasses.dim; i++) |
89 | 681 { |
116
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682 ClassDeclaration* cd = (ClassDeclaration*)aclasses.data[i]; |
1147
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683 cd->codegen(Type::sir); |
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684 |
133
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685 if (cd->isInterfaceDeclaration()) |
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686 { |
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687 Logger::println("skipping interface '%s' in moduleinfo", cd->toPrettyChars()); |
133
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688 continue; |
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689 } |
797
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690 else if (cd->sizeok != 1) |
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691 { |
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692 Logger::println("skipping opaque class declaration '%s' in moduleinfo", cd->toPrettyChars()); |
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693 continue; |
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694 } |
132 | 695 Logger::println("class: %s", cd->toPrettyChars()); |
173
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696 assert(cd->ir.irStruct->classInfo); |
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697 c = DtoBitCast(cd->ir.irStruct->classInfo, getPtrToType(classinfoTy)); |
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698 classInits.push_back(c); |
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699 } |
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700 // has class array? |
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701 if (!classInits.empty()) |
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702 { |
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703 const llvm::ArrayType* classArrTy = llvm::ArrayType::get(getPtrToType(classinfoTy), classInits.size()); |
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704 c = llvm::ConstantArray::get(classArrTy, classInits); |
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705 std::string m_name("_D"); |
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706 m_name.append(mangle()); |
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707 m_name.append("9__classesZ"); |
184 | 708 assert(gIR->module->getGlobalVariable(m_name) == NULL); |
116
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709 llvm::GlobalVariable* m_gvar = new llvm::GlobalVariable(classArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name, gIR->module); |
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710 c = DtoBitCast(m_gvar, getPtrToType(classinfoTy)); |
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711 c = DtoConstSlice(DtoConstSize_t(classInits.size()), c); |
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712 } |
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713 else |
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714 c = DtoConstSlice( DtoConstSize_t(0), getNullValue(getPtrToType(classinfoTy)) ); |
116
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715 initVec.push_back(c); |
89 | 716 |
116
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717 // flags |
132 | 718 c = DtoConstUint(0); |
719 if (!needmoduleinfo) | |
116
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720 c = DtoConstUint(4); // flags (4 means MIstandalone) |
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721 initVec.push_back(c); |
89 | 722 |
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723 // function pointer type for next three fields |
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724 const LLType* fnptrTy = getPtrToType(LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false)); |
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725 |
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726 // ctor |
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727 llvm::Function* fctor = build_module_ctor(); |
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728 c = fctor ? fctor : getNullValue(fnptrTy); |
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729 initVec.push_back(c); |
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730 |
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731 // dtor |
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732 llvm::Function* fdtor = build_module_dtor(); |
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733 c = fdtor ? fdtor : getNullValue(fnptrTy); |
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734 initVec.push_back(c); |
89 | 735 |
116
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736 // unitTest |
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737 llvm::Function* unittest = build_module_unittest(); |
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738 c = unittest ? unittest : getNullValue(fnptrTy); |
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739 initVec.push_back(c); |
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740 |
132 | 741 // xgetMembers |
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742 c = getNullValue(getVoidPtrType()); |
132 | 743 initVec.push_back(c); |
744 | |
745 // ictor | |
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746 c = getNullValue(fnptrTy); |
132 | 747 initVec.push_back(c); |
748 | |
749 /*Logger::println("MODULE INFO INITIALIZERS"); | |
750 for (size_t i=0; i<initVec.size(); ++i) | |
751 { | |
752 Logger::cout() << *initVec[i] << '\n'; | |
753 if (initVec[i]->getType() != moduleinfoTy->getElementType(i)) | |
754 assert(0); | |
755 }*/ | |
756 | |
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757 // create initializer |
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758 LLConstant* constMI = llvm::ConstantStruct::get(initVec); |
89 | 759 |
116
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760 // create name |
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761 std::string MIname("_D"); |
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762 MIname.append(mangle()); |
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763 MIname.append("8__ModuleZ"); |
89 | 764 |
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765 // declare global |
116
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766 // flags will be modified at runtime so can't make it constant |
184 | 767 |
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768 // it makes no sense that the our own module info already exists! |
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769 assert(!gIR->module->getGlobalVariable(MIname)); |
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770 llvm::GlobalVariable* gvar = new llvm::GlobalVariable(constMI->getType(), false, llvm::GlobalValue::ExternalLinkage, constMI, MIname, gIR->module); |
117 | 771 |
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772 // build the modulereference and ctor for registering it |
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773 LLFunction* mictor = build_module_reference_and_ctor(gvar); |
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774 |
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775 // register this ctor in the magic llvm.global_ctors appending array |
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776 const LLFunctionType* magicfty = LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false); |
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777 std::vector<const LLType*> magictypes; |
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778 magictypes.push_back(LLType::Int32Ty); |
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779 magictypes.push_back(getPtrToType(magicfty)); |
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780 const LLStructType* magicsty = LLStructType::get(magictypes); |
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781 |
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782 // make the constant element |
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783 std::vector<LLConstant*> magicconstants; |
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784 magicconstants.push_back(DtoConstUint(65535)); |
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785 magicconstants.push_back(mictor); |
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786 LLConstant* magicinit = LLConstantStruct::get(magicsty, magicconstants); |
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787 |
117 | 788 // declare the appending array |
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789 const llvm::ArrayType* appendArrTy = llvm::ArrayType::get(magicsty, 1); |
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790 std::vector<LLConstant*> appendInits(1, magicinit); |
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791 LLConstant* appendInit = llvm::ConstantArray::get(appendArrTy, appendInits); |
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792 std::string appendName("llvm.global_ctors"); |
117 | 793 llvm::GlobalVariable* appendVar = new llvm::GlobalVariable(appendArrTy, true, llvm::GlobalValue::AppendingLinkage, appendInit, appendName, gIR->module); |
1 | 794 } |