Mercurial > projects > ldc
annotate gen/toobj.cpp @ 1521:982eb70e83b2
Fix build for LLVM >= r74640
Some LLVM objects now take a 'Context' to make multi-threaded apps easier.
Since we're not multi-threaded it's safe to use llvm::getGlobalContext()
which gives us the same behavior as we had before.
author | Benjamin Kramer <benny.kra@gmail.com> |
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date | Fri, 03 Jul 2009 17:24:35 +0200 |
parents | 2292878925f4 |
children | ad7f2f1862d6 |
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" |
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14 #include "gen/llvm-version.h" |
1 | 15 #include "llvm/Analysis/Verifier.h" |
16 #include "llvm/Bitcode/ReaderWriter.h" | |
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17 #if LLVM_REV >= 74640 |
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18 #include "llvm/LLVMContext.h" |
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19 #endif |
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20 #include "llvm/Module.h" |
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21 #include "llvm/ModuleProvider.h" |
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22 #include "llvm/PassManager.h" |
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23 #include "llvm/LinkAllPasses.h" |
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24 #include "llvm/System/Program.h" |
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25 #include "llvm/Support/raw_ostream.h" |
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26 #include "llvm/Support/CommandLine.h" |
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27 #include "llvm/Target/TargetMachine.h" |
1 | 28 |
29 #include "mars.h" | |
30 #include "module.h" | |
31 #include "mtype.h" | |
32 #include "declaration.h" | |
33 #include "statement.h" | |
34 #include "enum.h" | |
35 #include "aggregate.h" | |
36 #include "init.h" | |
37 #include "attrib.h" | |
38 #include "id.h" | |
39 #include "import.h" | |
40 #include "template.h" | |
18 | 41 #include "scope.h" |
1 | 42 |
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43 #include "gen/abi.h" |
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44 #include "gen/arrays.h" |
100 | 45 #include "gen/classes.h" |
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46 #include "gen/cl_options.h" |
100 | 47 #include "gen/functions.h" |
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48 #include "gen/irstate.h" |
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49 #include "gen/llvmhelpers.h" |
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50 #include "gen/logger.h" |
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51 #include "gen/optimizer.h" |
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52 #include "gen/programs.h" |
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53 #include "gen/rttibuilder.h" |
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54 #include "gen/runtime.h" |
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55 #include "gen/structs.h" |
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56 #include "gen/todebug.h" |
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57 #include "gen/tollvm.h" |
1 | 58 |
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59 #include "ir/irvar.h" |
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60 #include "ir/irmodule.h" |
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61 #include "ir/irtype.h" |
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62 |
1 | 63 ////////////////////////////////////////////////////////////////////////////////////////// |
64 | |
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65 static llvm::cl::opt<bool> noVerify("noverify", |
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66 llvm::cl::desc("Do not run the validation pass before writing bitcode"), |
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67 llvm::cl::ZeroOrMore); |
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68 |
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69 ////////////////////////////////////////////////////////////////////////////////////////// |
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70 |
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71 // fwd decl |
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72 void write_asm_to_file(llvm::TargetMachine &Target, llvm::Module& m, llvm::raw_fd_ostream& Out); |
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73 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath); |
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74 |
125 | 75 ////////////////////////////////////////////////////////////////////////////////////////// |
76 | |
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77 llvm::Module* Module::genLLVMModule(Ir* sir) |
1 | 78 { |
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79 bool logenabled = Logger::enabled(); |
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80 if (llvmForceLogging && !logenabled) |
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81 { |
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82 Logger::enable(); |
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83 } |
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84 |
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85 Logger::println("Generating module: %s\n", (md ? md->toChars() : toChars())); |
1 | 86 LOG_SCOPE; |
87 | |
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88 if (global.params.verbose_cg) |
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89 printf("codegen: %s (%s)\n", toPrettyChars(), srcfile->toChars()); |
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90 |
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91 assert(!global.errors); |
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92 |
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93 // name the module |
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94 std::string mname(toChars()); |
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95 if (md != 0) |
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96 mname = md->toChars(); |
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97 |
18 | 98 // create a new ir state |
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99 // TODO look at making the instance static and moving most functionality into IrModule where it belongs |
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100 #if LLVM_REV >= 74640 |
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101 IRState ir(new llvm::Module(mname, llvm::getGlobalContext())); |
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102 #else |
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103 IRState ir(new llvm::Module(mname)); |
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104 #endif |
1 | 105 gIR = &ir; |
106 ir.dmodule = this; | |
107 | |
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108 // reset all IR data stored in Dsymbols |
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109 IrDsymbol::resetAll(); |
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110 |
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111 sir->setState(&ir); |
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112 |
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113 // set target triple |
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114 ir.module->setTargetTriple(global.params.targetTriple); |
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115 |
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116 // set final data layout |
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117 ir.module->setDataLayout(global.params.dataLayout); |
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118 if (Logger::enabled()) |
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119 Logger::cout() << "Final data layout: " << global.params.dataLayout << '\n'; |
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120 |
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121 // allocate the target abi |
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122 gABI = TargetABI::getTarget(); |
1 | 123 |
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124 // debug info |
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125 if (global.params.symdebug) { |
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126 RegisterDwarfSymbols(ir.module); |
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127 DtoDwarfCompileUnit(this); |
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128 } |
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129 |
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130 // handle invalid 'objectø module |
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131 if (!ClassDeclaration::object) { |
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132 error("is missing 'class Object'"); |
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133 fatal(); |
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134 } |
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135 if (!ClassDeclaration::classinfo) { |
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136 error("is missing 'class ClassInfo'"); |
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137 fatal(); |
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138 } |
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139 |
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140 LLVM_D_InitRuntime(); |
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141 |
6 | 142 // process module members |
1 | 143 for (int k=0; k < members->dim; k++) { |
144 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
145 assert(dsym); | |
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146 dsym->codegen(sir); |
1 | 147 } |
148 | |
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149 // emit function bodies |
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150 sir->emitFunctionBodies(); |
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151 |
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152 // for singleobj-compilation, fully emit all seen template instances |
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153 if (opts::singleObj) |
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154 { |
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155 while (!ir.seenTemplateInstances.empty()) |
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156 { |
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157 IRState::TemplateInstanceSet::iterator it, end = ir.seenTemplateInstances.end(); |
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158 for (it = ir.seenTemplateInstances.begin(); it != end; ++it) |
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159 (*it)->codegen(sir); |
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160 ir.seenTemplateInstances.clear(); |
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161 |
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162 // emit any newly added function bodies |
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163 sir->emitFunctionBodies(); |
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164 } |
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165 } |
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166 |
89 | 167 // generate ModuleInfo |
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168 genmoduleinfo(); |
89 | 169 |
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170 // emit usedArray |
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171 if (!ir.usedArray.empty()) |
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172 { |
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173 const LLArrayType* usedTy = LLArrayType::get(getVoidPtrType(), ir.usedArray.size()); |
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174 LLConstant* usedInit = LLConstantArray::get(usedTy, ir.usedArray); |
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175 LLGlobalVariable* usedArray = new LLGlobalVariable(usedTy, true, LLGlobalValue::AppendingLinkage, usedInit, "llvm.used", ir.module); |
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176 usedArray->setSection("llvm.metadata"); |
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177 } |
250
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178 |
6 | 179 // verify the llvm |
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180 if (!noVerify) { |
31
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181 std::string verifyErr; |
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182 Logger::println("Verifying module..."); |
117 | 183 LOG_SCOPE; |
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184 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) |
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185 { |
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186 error("%s", verifyErr.c_str()); |
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187 fatal(); |
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188 } |
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189 else { |
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190 Logger::println("Verification passed!"); |
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191 } |
1 | 192 } |
193 | |
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194 gIR = NULL; |
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195 |
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196 if (llvmForceLogging && !logenabled) |
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197 { |
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198 Logger::disable(); |
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199 } |
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200 |
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201 sir->setState(NULL); |
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202 |
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203 return ir.module; |
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204 } |
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205 |
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206 void writeModule(llvm::Module* m, std::string filename) |
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207 { |
125 | 208 // run optimizer |
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209 bool reverify = ldc_optimize_module(m); |
1 | 210 |
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211 // verify the llvm |
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212 if (!noVerify && reverify) { |
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213 std::string verifyErr; |
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214 Logger::println("Verifying module... again..."); |
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215 LOG_SCOPE; |
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216 if (llvm::verifyModule(*m,llvm::ReturnStatusAction,&verifyErr)) |
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217 { |
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218 //error("%s", verifyErr.c_str()); |
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219 fatal(); |
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220 } |
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221 else { |
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222 Logger::println("Verification passed!"); |
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223 } |
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224 } |
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225 |
217
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226 // eventually do our own path stuff, dmd's is a bit strange. |
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227 typedef llvm::sys::Path LLPath; |
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228 |
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229 // write LLVM bitcode |
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230 if (global.params.output_bc) { |
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231 LLPath bcpath = LLPath(filename); |
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232 bcpath.eraseSuffix(); |
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233 bcpath.appendSuffix(std::string(global.bc_ext)); |
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234 Logger::println("Writing LLVM bitcode to: %s\n", bcpath.c_str()); |
217
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235 std::ofstream bos(bcpath.c_str(), std::ios::binary); |
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236 if (bos.fail()) |
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237 { |
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238 error("cannot write LLVM bitcode, failed to open file '%s'", bcpath.c_str()); |
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239 fatal(); |
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240 } |
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241 llvm::WriteBitcodeToFile(m, bos); |
52 | 242 } |
1 | 243 |
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244 // write LLVM IR |
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245 if (global.params.output_ll) { |
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246 LLPath llpath = LLPath(filename); |
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247 llpath.eraseSuffix(); |
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248 llpath.appendSuffix(std::string(global.ll_ext)); |
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249 Logger::println("Writing LLVM asm to: %s\n", llpath.c_str()); |
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250 std::ofstream aos(llpath.c_str()); |
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251 if (aos.fail()) |
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252 { |
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253 error("cannot write LLVM asm, failed to open file '%s'", llpath.c_str()); |
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254 fatal(); |
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255 } |
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256 m->print(aos, NULL); |
52 | 257 } |
1 | 258 |
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259 // write native assembly |
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260 if (global.params.output_s || global.params.output_o) { |
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261 LLPath spath = LLPath(filename); |
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262 spath.eraseSuffix(); |
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263 spath.appendSuffix(std::string(global.s_ext)); |
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264 if (!global.params.output_s) { |
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265 spath.createTemporaryFileOnDisk(); |
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266 } |
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267 Logger::println("Writing native asm to: %s\n", spath.c_str()); |
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268 std::string err; |
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269 { |
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270 llvm::raw_fd_ostream out(spath.c_str(), false, err); |
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271 if (err.empty()) |
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272 { |
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273 write_asm_to_file(*gTargetMachine, *m, out); |
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274 } |
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275 else |
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276 { |
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277 error("cannot write native asm: %s", err.c_str()); |
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278 fatal(); |
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279 } |
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280 } |
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281 |
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282 // call gcc to convert assembly to object file |
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283 if (global.params.output_o) { |
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284 LLPath objpath = LLPath(filename); |
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285 assemble(spath, objpath); |
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286 } |
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287 |
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288 if (!global.params.output_s) { |
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289 spath.eraseFromDisk(); |
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290 } |
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291 } |
1 | 292 } |
293 | |
294 /* ================================================================== */ | |
295 | |
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296 // based on llc code, University of Illinois Open Source License |
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297 void write_asm_to_file(llvm::TargetMachine &Target, llvm::Module& m, llvm::raw_fd_ostream& out) |
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298 { |
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299 using namespace llvm; |
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300 |
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301 // Build up all of the passes that we want to do to the module. |
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302 ExistingModuleProvider Provider(&m); |
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303 FunctionPassManager Passes(&Provider); |
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304 |
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305 Passes.add(new TargetData(*Target.getTargetData())); |
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306 |
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307 // Ask the target to add backend passes as necessary. |
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308 MachineCodeEmitter *MCE = 0; |
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309 |
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310 #if LLVM_REV < 70343 |
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311 // Last argument is bool Fast |
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312 // debug info doesn't work properly without fast! |
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313 bool LastArg = !optimize() || global.params.symdebug; |
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314 #elif LLVM_REV < 70459 |
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315 // Last argument is unsigned OptLevel |
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316 // debug info doesn't work properly with OptLevel > 0! |
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317 unsigned LastArg = global.params.symdebug ? 0 : optLevel(); |
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318 #else |
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319 // Last argument is enum CodeGenOpt::Level OptLevel |
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320 // debug info doesn't work properly with OptLevel != None! |
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321 CodeGenOpt::Level LastArg = CodeGenOpt::Default; |
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322 if (global.params.symdebug || !optimize()) |
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323 LastArg = CodeGenOpt::None; |
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324 else if (optLevel() >= 3) |
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325 LastArg = CodeGenOpt::Aggressive; |
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326 #endif |
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327 FileModel::Model mod = Target.addPassesToEmitFile(Passes, out, TargetMachine::AssemblyFile, LastArg); |
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328 assert(mod == FileModel::AsmFile); |
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329 |
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330 bool err = Target.addPassesToEmitFileFinish(Passes, MCE, LastArg); |
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331 assert(!err); |
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332 |
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333 Passes.doInitialization(); |
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334 |
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335 // Run our queue of passes all at once now, efficiently. |
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336 for (llvm::Module::iterator I = m.begin(), E = m.end(); I != E; ++I) |
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337 if (!I->isDeclaration()) |
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338 Passes.run(*I); |
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339 |
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340 Passes.doFinalization(); |
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341 |
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342 // release module from module provider so we can delete it ourselves |
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343 std::string Err; |
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344 llvm::Module* rmod = Provider.releaseModule(&Err); |
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345 assert(rmod); |
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346 } |
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347 |
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348 /* ================================================================== */ |
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349 |
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350 // uses gcc to make an obj out of an assembly file |
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351 // based on llvm-ld code, University of Illinois Open Source License |
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352 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath) |
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353 { |
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354 using namespace llvm; |
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355 |
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356 sys::Path gcc = getGcc(); |
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357 |
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358 // Run GCC to assemble and link the program into native code. |
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359 // |
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360 // Note: |
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361 // We can't just assemble and link the file with the system assembler |
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362 // and linker because we don't know where to put the _start symbol. |
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363 // GCC mysteriously knows how to do it. |
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364 std::vector<std::string> args; |
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365 args.push_back(gcc.toString()); |
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366 args.push_back("-fno-strict-aliasing"); |
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367 args.push_back("-O3"); |
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368 args.push_back("-c"); |
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369 args.push_back("-xassembler"); |
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370 args.push_back(asmpath.toString()); |
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371 args.push_back("-o"); |
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372 args.push_back(objpath.toString()); |
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373 |
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374 //FIXME: only use this if needed? |
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375 args.push_back("-fpic"); |
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376 |
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377 //FIXME: enforce 64 bit |
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378 if (global.params.is64bit) |
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379 args.push_back("-m64"); |
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380 else |
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381 // Assume 32-bit? |
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382 args.push_back("-m32"); |
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383 |
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384 // Now that "args" owns all the std::strings for the arguments, call the c_str |
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385 // method to get the underlying string array. We do this game so that the |
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386 // std::string array is guaranteed to outlive the const char* array. |
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387 std::vector<const char *> Args; |
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388 for (unsigned i = 0, e = args.size(); i != e; ++i) |
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389 Args.push_back(args[i].c_str()); |
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390 Args.push_back(0); |
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391 |
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392 if (Logger::enabled()) { |
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393 Logger::println("Assembling with: "); |
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394 std::vector<const char*>::const_iterator I = Args.begin(), E = Args.end(); |
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395 Stream logstr = Logger::cout(); |
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396 for (; I != E; ++I) |
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397 if (*I) |
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398 logstr << "'" << *I << "'" << " "; |
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399 logstr << "\n" << std::flush; |
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400 } |
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401 |
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402 // Run the compiler to assembly the program. |
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403 std::string ErrMsg; |
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404 int R = sys::Program::ExecuteAndWait( |
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405 gcc, &Args[0], 0, 0, 0, 0, &ErrMsg); |
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406 if (R) |
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407 { |
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408 error("Failed to invoke gcc. %s", ErrMsg.c_str()); |
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409 fatal(); |
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410 } |
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411 } |
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412 |
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413 |
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414 /* ================================================================== */ |
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415 |
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416 // the following code generates functions and needs to output |
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417 // debug info. these macros are useful for that |
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418 #define DBG_TYPE ( getPtrToType(llvm::StructType::get(NULL,NULL)) ) |
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419 #define DBG_CAST(X) ( llvm::ConstantExpr::getBitCast(X, DBG_TYPE) ) |
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420 |
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421 // build module ctor |
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422 |
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423 llvm::Function* build_module_ctor() |
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424 { |
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425 if (gIR->ctors.empty()) |
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426 return NULL; |
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427 |
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428 size_t n = gIR->ctors.size(); |
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429 if (n == 1) |
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430 return gIR->ctors[0]->ir.irFunc->func; |
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431 |
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432 std::string name("_D"); |
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433 name.append(gIR->dmodule->mangle()); |
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434 name.append("6__ctorZ"); |
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435 |
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436 std::vector<const LLType*> argsTy; |
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437 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 438 assert(gIR->module->getFunction(name) == NULL); |
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439 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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440 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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441 |
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442 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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443 IRBuilder<> builder(bb); |
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444 |
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445 // debug info |
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446 LLGlobalVariable* subprog; |
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447 if(global.params.symdebug) { |
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448 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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449 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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450 } |
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451 |
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452 for (size_t i=0; i<n; i++) { |
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453 llvm::Function* f = gIR->ctors[i]->ir.irFunc->func; |
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454 llvm::CallInst* call = builder.CreateCall(f,""); |
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455 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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456 } |
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457 |
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458 // debug info end |
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459 if(global.params.symdebug) |
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460 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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461 |
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462 builder.CreateRetVoid(); |
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463 return fn; |
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464 } |
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465 |
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466 // build module dtor |
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467 |
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468 static llvm::Function* build_module_dtor() |
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469 { |
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470 if (gIR->dtors.empty()) |
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471 return NULL; |
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472 |
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473 size_t n = gIR->dtors.size(); |
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474 if (n == 1) |
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475 return gIR->dtors[0]->ir.irFunc->func; |
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476 |
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477 std::string name("_D"); |
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478 name.append(gIR->dmodule->mangle()); |
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479 name.append("6__dtorZ"); |
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480 |
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481 std::vector<const LLType*> argsTy; |
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482 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 483 assert(gIR->module->getFunction(name) == NULL); |
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484 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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485 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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486 |
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487 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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488 IRBuilder<> builder(bb); |
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489 |
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490 // debug info |
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491 LLGlobalVariable* subprog; |
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492 if(global.params.symdebug) { |
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493 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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494 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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495 } |
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496 |
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497 for (size_t i=0; i<n; i++) { |
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498 llvm::Function* f = gIR->dtors[i]->ir.irFunc->func; |
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499 llvm::CallInst* call = builder.CreateCall(f,""); |
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500 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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501 } |
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502 |
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503 // debug info end |
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504 if(global.params.symdebug) |
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505 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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506 |
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507 builder.CreateRetVoid(); |
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508 return fn; |
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509 } |
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510 |
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511 // build module unittest |
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512 |
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513 static llvm::Function* build_module_unittest() |
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514 { |
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515 if (gIR->unitTests.empty()) |
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516 return NULL; |
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517 |
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518 size_t n = gIR->unitTests.size(); |
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519 if (n == 1) |
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520 return gIR->unitTests[0]->ir.irFunc->func; |
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521 |
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522 std::string name("_D"); |
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523 name.append(gIR->dmodule->mangle()); |
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524 name.append("10__unittestZ"); |
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525 |
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526 std::vector<const LLType*> argsTy; |
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527 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 528 assert(gIR->module->getFunction(name) == NULL); |
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529 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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530 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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531 |
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532 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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533 IRBuilder<> builder(bb); |
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534 |
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535 // debug info |
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536 LLGlobalVariable* subprog; |
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537 if(global.params.symdebug) { |
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538 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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539 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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540 } |
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541 |
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542 for (size_t i=0; i<n; i++) { |
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543 llvm::Function* f = gIR->unitTests[i]->ir.irFunc->func; |
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544 llvm::CallInst* call = builder.CreateCall(f,""); |
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545 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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546 } |
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547 |
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548 // debug info end |
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549 if(global.params.symdebug) |
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550 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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551 |
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552 builder.CreateRetVoid(); |
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553 return fn; |
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554 } |
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555 |
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556 // build ModuleReference and register function, to register the module info in the global linked list |
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557 static LLFunction* build_module_reference_and_ctor(LLConstant* moduleinfo) |
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558 { |
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559 // build ctor type |
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560 const LLFunctionType* fty = LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false); |
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561 |
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562 // build ctor name |
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563 std::string fname = "_D"; |
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564 fname += gIR->dmodule->mangle(); |
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565 fname += "16__moduleinfoCtorZ"; |
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566 |
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567 // build a function that registers the moduleinfo in the global moduleinfo linked list |
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568 LLFunction* ctor = LLFunction::Create(fty, LLGlobalValue::InternalLinkage, fname, gIR->module); |
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569 |
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570 // provide the default initializer |
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571 const LLStructType* modulerefTy = DtoModuleReferenceType(); |
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572 std::vector<LLConstant*> mrefvalues; |
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573 mrefvalues.push_back(LLConstant::getNullValue(modulerefTy->getContainedType(0))); |
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574 mrefvalues.push_back(llvm::ConstantExpr::getBitCast(moduleinfo, modulerefTy->getContainedType(1))); |
323
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575 LLConstant* thismrefinit = LLConstantStruct::get(modulerefTy, mrefvalues); |
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576 |
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577 // create the ModuleReference node for this module |
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578 std::string thismrefname = "_D"; |
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579 thismrefname += gIR->dmodule->mangle(); |
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580 thismrefname += "11__moduleRefZ"; |
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581 LLGlobalVariable* thismref = new LLGlobalVariable(modulerefTy, false, LLGlobalValue::InternalLinkage, thismrefinit, thismrefname, gIR->module); |
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582 |
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583 // make sure _Dmodule_ref is declared |
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584 LLGlobalVariable* mref = gIR->module->getNamedGlobal("_Dmodule_ref"); |
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585 if (!mref) |
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586 mref = new LLGlobalVariable(getPtrToType(modulerefTy), false, LLGlobalValue::ExternalLinkage, NULL, "_Dmodule_ref", gIR->module); |
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587 |
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588 // make the function insert this moduleinfo as the beginning of the _Dmodule_ref linked list |
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589 llvm::BasicBlock* bb = llvm::BasicBlock::Create("moduleinfoCtorEntry", ctor); |
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590 IRBuilder<> builder(bb); |
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591 |
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592 // debug info |
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593 LLGlobalVariable* subprog; |
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594 if(global.params.symdebug) { |
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595 subprog = DtoDwarfSubProgramInternal(fname.c_str(), fname.c_str()).getGV(); |
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596 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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597 } |
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598 |
323
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599 // get current beginning |
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600 LLValue* curbeg = builder.CreateLoad(mref, "current"); |
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601 |
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602 // put current beginning as the next of this one |
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603 LLValue* gep = builder.CreateStructGEP(thismref, 0, "next"); |
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604 builder.CreateStore(curbeg, gep); |
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605 |
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606 // replace beginning |
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607 builder.CreateStore(thismref, mref); |
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608 |
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609 // debug info end |
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610 if(global.params.symdebug) |
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611 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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612 |
323
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613 // return |
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614 builder.CreateRetVoid(); |
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615 |
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616 return ctor; |
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617 } |
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618 |
1 | 619 // Put out instance of ModuleInfo for this Module |
620 | |
621 void Module::genmoduleinfo() | |
622 { | |
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623 // The layout is: |
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624 // { |
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625 // char[] name; |
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626 // ModuleInfo[] importedModules; |
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627 // ClassInfo[] localClasses; |
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628 // uint flags; |
8e6135be6999
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629 // |
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Fixed ModuleInfo generation to no longer use the ModuleInfo class' default initializer for types/defaults, it's unsafe as initializers don't necesarily match the "formal" type. There might be explicit padding.
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630 // void function() ctor; |
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parents:
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631 // void function() dtor; |
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632 // void function() unitTest; |
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633 // |
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634 // void* xgetMembers; |
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635 // void function() ictor; |
1464
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636 // |
1467
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637 // version(D_Version2) |
630fc54f7c1e
Fix a bug in DtoNestedInit and update an unrelated comment.
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638 // void*[4] reserved; // useless to us |
811
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639 // } |
89 | 640 |
116
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641 // resolve ModuleInfo |
919
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642 if (!moduleinfo) |
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643 { |
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644 error("object.d is missing the ModuleInfo class"); |
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645 fatal(); |
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646 } |
797
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647 // check for patch |
1453 | 648 #if DMDV2 |
649 else if (moduleinfo->fields.dim != 10) | |
650 #else | |
1386
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651 else if (moduleinfo->fields.dim != 9) |
1453 | 652 #endif |
797
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653 { |
919
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654 error("object.d ModuleInfo class is incorrect"); |
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655 fatal(); |
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656 } |
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657 |
1386
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658 // use the RTTIBuilder |
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659 RTTIBuilder b(moduleinfo); |
89 | 660 |
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661 // some types |
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662 const LLType* moduleinfoTy = moduleinfo->type->irtype->getPA(); |
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663 const LLType* classinfoTy = ClassDeclaration::classinfo->type->irtype->getPA(); |
89 | 664 |
116
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665 // name |
1386
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666 b.push_string(toPrettyChars()); |
89 | 667 |
668 // importedModules[] | |
669 int aimports_dim = aimports.dim; | |
213
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670 std::vector<LLConstant*> importInits; |
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671 LLConstant* c = 0; |
116
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672 for (size_t i = 0; i < aimports.dim; i++) |
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673 { |
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674 Module *m = (Module *)aimports.data[i]; |
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675 if (!m->needModuleInfo() || m == this) |
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676 continue; |
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677 |
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678 // declare the imported module info |
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679 std::string m_name("_D"); |
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680 m_name.append(m->mangle()); |
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681 m_name.append("8__ModuleZ"); |
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682 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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683 if (!m_gvar) m_gvar = new llvm::GlobalVariable(moduleinfoTy, false, llvm::GlobalValue::ExternalLinkage, NULL, m_name, gIR->module); |
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684 importInits.push_back(m_gvar); |
89 | 685 } |
116
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686 // has import array? |
133
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687 if (!importInits.empty()) |
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688 { |
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689 const llvm::ArrayType* importArrTy = llvm::ArrayType::get(getPtrToType(moduleinfoTy), importInits.size()); |
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690 c = llvm::ConstantArray::get(importArrTy, importInits); |
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691 std::string m_name("_D"); |
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692 m_name.append(mangle()); |
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693 m_name.append("9__importsZ"); |
163
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694 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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695 if (!m_gvar) m_gvar = new llvm::GlobalVariable(importArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name, gIR->module); |
133
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696 c = llvm::ConstantExpr::getBitCast(m_gvar, getPtrToType(importArrTy->getElementType())); |
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697 c = DtoConstSlice(DtoConstSize_t(importInits.size()), c); |
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698 } |
89 | 699 else |
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700 { |
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701 c = DtoConstSlice( DtoConstSize_t(0), getNullValue(getPtrToType(moduleinfoTy)) ); |
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702 } |
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703 b.push(c); |
89 | 704 |
705 // localClasses[] | |
116
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706 ClassDeclarations aclasses; |
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707 //printf("members->dim = %d\n", members->dim); |
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708 for (size_t i = 0; i < members->dim; i++) |
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709 { |
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710 Dsymbol *member; |
89 | 711 |
116
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712 member = (Dsymbol *)members->data[i]; |
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713 //printf("\tmember '%s'\n", member->toChars()); |
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714 member->addLocalClass(&aclasses); |
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715 } |
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716 // fill inits |
213
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717 std::vector<LLConstant*> classInits; |
116
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718 for (size_t i = 0; i < aclasses.dim; i++) |
89 | 719 { |
116
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720 ClassDeclaration* cd = (ClassDeclaration*)aclasses.data[i]; |
1147
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Changed use of toObjFile to a new codegen method.
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721 cd->codegen(Type::sir); |
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Changed use of toObjFile to a new codegen method.
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722 |
133
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723 if (cd->isInterfaceDeclaration()) |
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724 { |
136
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725 Logger::println("skipping interface '%s' in moduleinfo", cd->toPrettyChars()); |
133
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726 continue; |
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727 } |
797
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728 else if (cd->sizeok != 1) |
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729 { |
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730 Logger::println("skipping opaque class declaration '%s' in moduleinfo", cd->toPrettyChars()); |
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731 continue; |
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732 } |
132 | 733 Logger::println("class: %s", cd->toPrettyChars()); |
1228
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734 c = DtoBitCast(cd->ir.irStruct->getClassInfoSymbol(), getPtrToType(classinfoTy)); |
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735 classInits.push_back(c); |
116
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736 } |
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737 // has class array? |
133
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738 if (!classInits.empty()) |
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739 { |
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740 const llvm::ArrayType* classArrTy = llvm::ArrayType::get(getPtrToType(classinfoTy), classInits.size()); |
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741 c = llvm::ConstantArray::get(classArrTy, classInits); |
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742 std::string m_name("_D"); |
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743 m_name.append(mangle()); |
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744 m_name.append("9__classesZ"); |
184 | 745 assert(gIR->module->getGlobalVariable(m_name) == NULL); |
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746 llvm::GlobalVariable* m_gvar = new llvm::GlobalVariable(classArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name, gIR->module); |
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747 c = DtoGEPi(m_gvar, 0, 0); |
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748 c = DtoConstSlice(DtoConstSize_t(classInits.size()), c); |
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749 } |
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750 else |
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751 c = DtoConstSlice( DtoConstSize_t(0), getNullValue(getPtrToType(getPtrToType(classinfoTy))) ); |
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752 b.push(c); |
89 | 753 |
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754 // flags (4 means MIstandalone) |
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755 unsigned mi_flags = needmoduleinfo ? 0 : 4; |
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756 b.push_uint(mi_flags); |
89 | 757 |
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758 // function pointer type for next three fields |
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759 const LLType* fnptrTy = getPtrToType(LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false)); |
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760 |
116
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761 // ctor |
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762 llvm::Function* fctor = build_module_ctor(); |
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763 c = fctor ? fctor : getNullValue(fnptrTy); |
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764 b.push(c); |
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765 |
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766 // dtor |
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767 llvm::Function* fdtor = build_module_dtor(); |
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768 c = fdtor ? fdtor : getNullValue(fnptrTy); |
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769 b.push(c); |
89 | 770 |
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771 // unitTest |
121
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772 llvm::Function* unittest = build_module_unittest(); |
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773 c = unittest ? unittest : getNullValue(fnptrTy); |
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774 b.push(c); |
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775 |
132 | 776 // xgetMembers |
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777 c = getNullValue(getVoidPtrType()); |
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778 b.push(c); |
132 | 779 |
780 // ictor | |
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781 c = getNullValue(fnptrTy); |
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782 b.push(c); |
132 | 783 |
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784 #if DMDV2 |
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785 |
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786 // void*[4] reserved :/ |
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787 const LLType* AT = llvm::ArrayType::get(getVoidPtrType(), 4); |
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788 c = getNullValue(AT); |
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789 b.push(c); |
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790 |
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791 #endif |
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792 |
132 | 793 /*Logger::println("MODULE INFO INITIALIZERS"); |
794 for (size_t i=0; i<initVec.size(); ++i) | |
795 { | |
796 Logger::cout() << *initVec[i] << '\n'; | |
797 if (initVec[i]->getType() != moduleinfoTy->getElementType(i)) | |
798 assert(0); | |
799 }*/ | |
800 | |
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801 // create initializer |
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802 LLConstant* constMI = b.get_constant(); |
89 | 803 |
116
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804 // create name |
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805 std::string MIname("_D"); |
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806 MIname.append(mangle()); |
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807 MIname.append("8__ModuleZ"); |
89 | 808 |
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809 // declare global |
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810 // flags will be modified at runtime so can't make it constant |
184 | 811 |
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812 // it makes no sense that the our own module info already exists! |
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813 assert(!gIR->module->getGlobalVariable(MIname)); |
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814 llvm::GlobalVariable* gvar = new llvm::GlobalVariable(constMI->getType(), false, llvm::GlobalValue::ExternalLinkage, constMI, MIname, gIR->module); |
117 | 815 |
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816 // build the modulereference and ctor for registering it |
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817 LLFunction* mictor = build_module_reference_and_ctor(gvar); |
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818 |
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819 // register this ctor in the magic llvm.global_ctors appending array |
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820 const LLFunctionType* magicfty = LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false); |
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821 std::vector<const LLType*> magictypes; |
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822 magictypes.push_back(LLType::Int32Ty); |
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823 magictypes.push_back(getPtrToType(magicfty)); |
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824 const LLStructType* magicsty = LLStructType::get(magictypes); |
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825 |
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826 // make the constant element |
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827 std::vector<LLConstant*> magicconstants; |
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828 magicconstants.push_back(DtoConstUint(65535)); |
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829 magicconstants.push_back(mictor); |
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830 LLConstant* magicinit = LLConstantStruct::get(magicsty, magicconstants); |
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831 |
117 | 832 // declare the appending array |
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833 const llvm::ArrayType* appendArrTy = llvm::ArrayType::get(magicsty, 1); |
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834 std::vector<LLConstant*> appendInits(1, magicinit); |
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835 LLConstant* appendInit = llvm::ConstantArray::get(appendArrTy, appendInits); |
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836 std::string appendName("llvm.global_ctors"); |
117 | 837 llvm::GlobalVariable* appendVar = new llvm::GlobalVariable(appendArrTy, true, llvm::GlobalValue::AppendingLinkage, appendInit, appendName, gIR->module); |
1 | 838 } |