Mercurial > projects > ldc
annotate gen/toobj.cpp @ 1650:40bd4a0d4870
Update to work with LLVM 2.7.
Removed use of dyn_cast, llvm no compiles
without exceptions and rtti by
default. We do need exceptions for the libconfig stuff, but rtti isn't
necessary (anymore).
Debug info needs to be rewritten, as in LLVM 2.7 the format has
completely changed. To have something to look at while rewriting, the
old code has been wrapped inside #ifndef DISABLE_DEBUG_INFO , this means
that you have to define this to compile at the moment.
Updated tango 0.99.9 patch to include updated EH runtime code, which is
needed for LLVM 2.7 as well.
author | Tomas Lindquist Olsen |
---|---|
date | Wed, 19 May 2010 12:42:32 +0200 |
parents | 299a6b634178 |
children |
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/PassManager.h" |
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18 #include "llvm/LinkAllPasses.h" |
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19 #include "llvm/System/Program.h" |
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20 #include "llvm/Support/raw_ostream.h" |
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21 #include "llvm/Support/CommandLine.h" |
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22 #include "llvm/Support/FormattedStream.h" |
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23 #include "llvm/Target/TargetMachine.h" |
1650 | 24 #include "llvm/CodeGen/MachineCodeEmitter.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/abi.h" |
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41 #include "gen/arrays.h" |
100 | 42 #include "gen/classes.h" |
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43 #include "gen/cl_options.h" |
100 | 44 #include "gen/functions.h" |
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45 #include "gen/irstate.h" |
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46 #include "gen/llvmhelpers.h" |
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47 #include "gen/logger.h" |
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48 #include "gen/optimizer.h" |
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49 #include "gen/programs.h" |
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50 #include "gen/rttibuilder.h" |
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51 #include "gen/runtime.h" |
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52 #include "gen/structs.h" |
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53 #include "gen/todebug.h" |
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54 #include "gen/tollvm.h" |
1 | 55 |
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56 #include "ir/irvar.h" |
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57 #include "ir/irmodule.h" |
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58 #include "ir/irtype.h" |
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59 |
1 | 60 ////////////////////////////////////////////////////////////////////////////////////////// |
61 | |
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62 static llvm::cl::opt<bool> noVerify("noverify", |
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63 llvm::cl::desc("Do not run the validation pass before writing bitcode"), |
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64 llvm::cl::ZeroOrMore); |
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65 |
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66 ////////////////////////////////////////////////////////////////////////////////////////// |
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67 |
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68 // fwd decl |
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69 void write_asm_to_file(llvm::TargetMachine &Target, llvm::Module& m, llvm::raw_fd_ostream& Out); |
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70 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath); |
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71 |
125 | 72 ////////////////////////////////////////////////////////////////////////////////////////// |
73 | |
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74 llvm::Module* Module::genLLVMModule(llvm::LLVMContext& context, Ir* sir) |
1 | 75 { |
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76 bool logenabled = Logger::enabled(); |
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77 if (llvmForceLogging && !logenabled) |
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78 { |
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79 Logger::enable(); |
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80 } |
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81 |
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82 Logger::println("Generating module: %s\n", (md ? md->toChars() : toChars())); |
1 | 83 LOG_SCOPE; |
84 | |
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85 if (global.params.verbose_cg) |
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86 printf("codegen: %s (%s)\n", toPrettyChars(), srcfile->toChars()); |
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87 |
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88 assert(!global.errors); |
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89 |
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90 // name the module |
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91 llvm::StringRef mname(toChars()); |
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92 if (md != 0) |
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93 mname = md->toChars(); |
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94 |
18 | 95 // create a new ir state |
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96 // TODO look at making the instance static and moving most functionality into IrModule where it belongs |
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97 IRState ir(new llvm::Module(mname, context)); |
1 | 98 gIR = &ir; |
99 ir.dmodule = this; | |
100 | |
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101 // reset all IR data stored in Dsymbols |
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102 IrDsymbol::resetAll(); |
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103 |
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104 sir->setState(&ir); |
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105 |
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106 // set target triple |
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107 ir.module->setTargetTriple(global.params.targetTriple); |
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108 |
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109 // set final data layout |
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110 ir.module->setDataLayout(global.params.dataLayout); |
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111 if (Logger::enabled()) |
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112 Logger::cout() << "Final data layout: " << global.params.dataLayout << '\n'; |
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113 |
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114 // allocate the target abi |
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115 gABI = TargetABI::getTarget(); |
1 | 116 |
1650 | 117 #ifndef DISABLE_DEBUG_INFO |
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118 // debug info |
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119 if (global.params.symdebug) { |
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120 RegisterDwarfSymbols(ir.module); |
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121 DtoDwarfCompileUnit(this); |
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122 } |
1650 | 123 #endif |
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124 |
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125 // handle invalid 'objectø module |
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126 if (!ClassDeclaration::object) { |
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127 error("is missing 'class Object'"); |
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128 fatal(); |
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129 } |
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130 if (!ClassDeclaration::classinfo) { |
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131 error("is missing 'class ClassInfo'"); |
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132 fatal(); |
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133 } |
1650 | 134 |
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135 LLVM_D_InitRuntime(); |
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136 |
6 | 137 // process module members |
1 | 138 for (int k=0; k < members->dim; k++) { |
139 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
140 assert(dsym); | |
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141 dsym->codegen(sir); |
1 | 142 } |
143 | |
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144 // emit function bodies |
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145 sir->emitFunctionBodies(); |
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146 |
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147 // for singleobj-compilation, fully emit all seen template instances |
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148 if (opts::singleObj) |
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149 { |
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150 while (!ir.seenTemplateInstances.empty()) |
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151 { |
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152 IRState::TemplateInstanceSet::iterator it, end = ir.seenTemplateInstances.end(); |
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153 for (it = ir.seenTemplateInstances.begin(); it != end; ++it) |
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154 (*it)->codegen(sir); |
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155 ir.seenTemplateInstances.clear(); |
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156 |
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157 // emit any newly added function bodies |
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158 sir->emitFunctionBodies(); |
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159 } |
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160 } |
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161 |
89 | 162 // generate ModuleInfo |
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163 genmoduleinfo(); |
89 | 164 |
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165 // emit usedArray |
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166 if (!ir.usedArray.empty()) |
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167 { |
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168 const LLArrayType* usedTy = LLArrayType::get(getVoidPtrType(), ir.usedArray.size()); |
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169 LLConstant* usedInit = LLConstantArray::get(usedTy, ir.usedArray); |
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170 LLGlobalVariable* usedArray = new LLGlobalVariable(*ir.module, usedTy, true, LLGlobalValue::AppendingLinkage, usedInit, "llvm.used"); |
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171 usedArray->setSection("llvm.metadata"); |
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172 } |
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173 |
6 | 174 // verify the llvm |
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175 if (!noVerify) { |
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176 std::string verifyErr; |
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177 Logger::println("Verifying module..."); |
117 | 178 LOG_SCOPE; |
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179 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) |
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180 { |
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181 error("%s", verifyErr.c_str()); |
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182 fatal(); |
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183 } |
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184 else { |
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185 Logger::println("Verification passed!"); |
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186 } |
1 | 187 } |
188 | |
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189 gIR = NULL; |
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190 |
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191 if (llvmForceLogging && !logenabled) |
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192 { |
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193 Logger::disable(); |
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194 } |
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195 |
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196 sir->setState(NULL); |
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197 |
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198 return ir.module; |
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199 } |
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200 |
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201 void writeModule(llvm::Module* m, std::string filename) |
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202 { |
125 | 203 // run optimizer |
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204 bool reverify = ldc_optimize_module(m); |
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206 // verify the llvm |
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207 if (!noVerify && reverify) { |
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208 std::string verifyErr; |
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209 Logger::println("Verifying module... again..."); |
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210 LOG_SCOPE; |
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211 if (llvm::verifyModule(*m,llvm::ReturnStatusAction,&verifyErr)) |
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212 { |
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213 //error("%s", verifyErr.c_str()); |
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214 fatal(); |
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215 } |
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216 else { |
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217 Logger::println("Verification passed!"); |
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218 } |
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219 } |
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220 |
217
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221 // eventually do our own path stuff, dmd's is a bit strange. |
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222 typedef llvm::sys::Path LLPath; |
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223 |
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224 // write LLVM bitcode |
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225 if (global.params.output_bc) { |
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226 LLPath bcpath = LLPath(filename); |
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227 bcpath.eraseSuffix(); |
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228 bcpath.appendSuffix(std::string(global.bc_ext)); |
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229 Logger::println("Writing LLVM bitcode to: %s\n", bcpath.c_str()); |
1650 | 230 std::string errinfo; |
231 llvm::raw_fd_ostream bos(bcpath.c_str(), errinfo, llvm::raw_fd_ostream::F_Binary); | |
232 if (bos.has_error()) | |
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233 { |
1650 | 234 error("cannot write LLVM bitcode file '%s': %s", bcpath.c_str(), errinfo.c_str()); |
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235 fatal(); |
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236 } |
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237 llvm::WriteBitcodeToFile(m, bos); |
52 | 238 } |
1 | 239 |
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240 // write LLVM IR |
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241 if (global.params.output_ll) { |
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242 LLPath llpath = LLPath(filename); |
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243 llpath.eraseSuffix(); |
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244 llpath.appendSuffix(std::string(global.ll_ext)); |
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245 Logger::println("Writing LLVM asm to: %s\n", llpath.c_str()); |
1650 | 246 std::string errinfo; |
247 llvm::raw_fd_ostream aos(llpath.c_str(), errinfo); | |
248 if (aos.has_error()) | |
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249 { |
1650 | 250 error("cannot write LLVM asm file '%s': %s", llpath.c_str(), errinfo.c_str()); |
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251 fatal(); |
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252 } |
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253 m->print(aos, NULL); |
52 | 254 } |
1 | 255 |
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256 // write native assembly |
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257 if (global.params.output_s || global.params.output_o) { |
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258 LLPath spath = LLPath(filename); |
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259 spath.eraseSuffix(); |
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260 spath.appendSuffix(std::string(global.s_ext)); |
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261 if (!global.params.output_s) { |
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262 spath.createTemporaryFileOnDisk(); |
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263 } |
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264 Logger::println("Writing native asm to: %s\n", spath.c_str()); |
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265 std::string err; |
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266 { |
1650 | 267 llvm::raw_fd_ostream out(spath.c_str(), err); |
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268 if (err.empty()) |
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269 { |
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270 write_asm_to_file(*gTargetMachine, *m, out); |
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271 } |
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272 else |
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273 { |
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274 error("cannot write native asm: %s", err.c_str()); |
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275 fatal(); |
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276 } |
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277 } |
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278 |
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279 // call gcc to convert assembly to object file |
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280 if (global.params.output_o) { |
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281 LLPath objpath = LLPath(filename); |
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282 assemble(spath, objpath); |
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283 } |
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284 |
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285 if (!global.params.output_s) { |
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286 spath.eraseFromDisk(); |
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287 } |
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288 } |
1 | 289 } |
290 | |
291 /* ================================================================== */ | |
292 | |
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293 // based on llc code, University of Illinois Open Source License |
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294 void write_asm_to_file(llvm::TargetMachine &Target, llvm::Module& m, llvm::raw_fd_ostream& out) |
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295 { |
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296 using namespace llvm; |
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297 |
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298 // Build up all of the passes that we want to do to the module. |
1650 | 299 FunctionPassManager Passes(&m); |
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300 |
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301 if (const TargetData *TD = Target.getTargetData()) |
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302 Passes.add(new TargetData(*TD)); |
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303 else |
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304 Passes.add(new TargetData(&m)); |
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305 |
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306 // Last argument is enum CodeGenOpt::Level OptLevel |
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307 // debug info doesn't work properly with OptLevel != None! |
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308 CodeGenOpt::Level LastArg = CodeGenOpt::Default; |
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309 if (global.params.symdebug || !optimize()) |
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310 LastArg = CodeGenOpt::None; |
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311 else if (optLevel() >= 3) |
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312 LastArg = CodeGenOpt::Aggressive; |
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313 |
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314 llvm::formatted_raw_ostream fout(out); |
1650 | 315 if (Target.addPassesToEmitFile(Passes, fout, TargetMachine::CGFT_AssemblyFile, LastArg)) |
316 assert(0 && "no support for asm output"); | |
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317 |
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318 Passes.doInitialization(); |
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319 |
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320 // Run our queue of passes all at once now, efficiently. |
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321 for (llvm::Module::iterator I = m.begin(), E = m.end(); I != E; ++I) |
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322 if (!I->isDeclaration()) |
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323 Passes.run(*I); |
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324 |
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325 Passes.doFinalization(); |
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326 |
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327 // release module from module provider so we can delete it ourselves |
1650 | 328 //std::string Err; |
329 //llvm::Module* rmod = Provider.releaseModule(&Err); | |
330 //assert(rmod); | |
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331 } |
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332 |
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333 /* ================================================================== */ |
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334 |
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335 // uses gcc to make an obj out of an assembly file |
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336 // based on llvm-ld code, University of Illinois Open Source License |
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337 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath) |
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338 { |
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339 using namespace llvm; |
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340 |
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341 sys::Path gcc = getGcc(); |
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342 |
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343 // Run GCC to assemble and link the program into native code. |
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344 // |
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345 // Note: |
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346 // We can't just assemble and link the file with the system assembler |
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347 // and linker because we don't know where to put the _start symbol. |
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348 // GCC mysteriously knows how to do it. |
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349 std::vector<std::string> args; |
1650 | 350 args.push_back(gcc.str()); |
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351 args.push_back("-fno-strict-aliasing"); |
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352 args.push_back("-O3"); |
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353 args.push_back("-c"); |
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354 args.push_back("-xassembler"); |
1650 | 355 args.push_back(asmpath.str()); |
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356 args.push_back("-o"); |
1650 | 357 args.push_back(objpath.str()); |
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358 |
677
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359 //FIXME: only use this if needed? |
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360 args.push_back("-fpic"); |
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361 |
902
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362 //FIXME: enforce 64 bit |
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363 if (global.params.is64bit) |
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364 args.push_back("-m64"); |
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365 else |
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366 // Assume 32-bit? |
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367 args.push_back("-m32"); |
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368 |
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369 // Now that "args" owns all the std::strings for the arguments, call the c_str |
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370 // method to get the underlying string array. We do this game so that the |
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371 // std::string array is guaranteed to outlive the const char* array. |
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372 std::vector<const char *> Args; |
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373 for (unsigned i = 0, e = args.size(); i != e; ++i) |
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374 Args.push_back(args[i].c_str()); |
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375 Args.push_back(0); |
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376 |
994
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377 if (Logger::enabled()) { |
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378 Logger::println("Assembling with: "); |
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379 std::vector<const char*>::const_iterator I = Args.begin(), E = Args.end(); |
1502
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380 Stream logstr = Logger::cout(); |
994
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381 for (; I != E; ++I) |
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382 if (*I) |
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383 logstr << "'" << *I << "'" << " "; |
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384 logstr << "\n" << std::flush; |
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385 } |
676
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386 |
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387 // Run the compiler to assembly the program. |
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388 std::string ErrMsg; |
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389 int R = sys::Program::ExecuteAndWait( |
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390 gcc, &Args[0], 0, 0, 0, 0, &ErrMsg); |
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391 if (R) |
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392 { |
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393 error("Failed to invoke gcc. %s", ErrMsg.c_str()); |
814
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394 fatal(); |
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395 } |
676
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396 } |
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397 |
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398 |
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399 /* ================================================================== */ |
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400 |
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401 // the following code generates functions and needs to output |
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402 // debug info. these macros are useful for that |
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403 #define DBG_TYPE ( getPtrToType(llvm::StructType::get(gIR->context(),NULL,NULL)) ) |
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404 #define DBG_CAST(X) ( llvm::ConstantExpr::getBitCast(X, DBG_TYPE) ) |
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405 |
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406 // build module ctor |
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407 |
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408 llvm::Function* build_module_ctor() |
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409 { |
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410 if (gIR->ctors.empty()) |
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411 return NULL; |
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412 |
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413 size_t n = gIR->ctors.size(); |
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414 if (n == 1) |
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415 return gIR->ctors[0]->ir.irFunc->func; |
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416 |
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417 std::string name("_D"); |
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418 name.append(gIR->dmodule->mangle()); |
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419 name.append("6__ctorZ"); |
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420 |
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421 std::vector<const LLType*> argsTy; |
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422 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::getVoidTy(gIR->context()),argsTy,false); |
184 | 423 assert(gIR->module->getFunction(name) == NULL); |
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424 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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425 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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426 |
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427 llvm::BasicBlock* bb = llvm::BasicBlock::Create(gIR->context(), "entry", fn); |
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428 IRBuilder<> builder(bb); |
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429 |
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430 // debug info |
1650 | 431 #ifndef DISABLE_DEBUG_INFO |
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432 LLGlobalVariable* subprog; |
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433 if(global.params.symdebug) { |
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434 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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435 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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436 } |
1650 | 437 #endif |
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438 |
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439 for (size_t i=0; i<n; i++) { |
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440 llvm::Function* f = gIR->ctors[i]->ir.irFunc->func; |
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441 llvm::CallInst* call = builder.CreateCall(f,""); |
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442 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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443 } |
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444 |
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445 // debug info end |
1650 | 446 #ifndef DISABLE_DEBUG_INFO |
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447 if(global.params.symdebug) |
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448 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
1650 | 449 #endif |
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450 |
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451 builder.CreateRetVoid(); |
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452 return fn; |
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453 } |
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454 |
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455 // build module dtor |
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456 |
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457 static llvm::Function* build_module_dtor() |
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458 { |
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459 if (gIR->dtors.empty()) |
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460 return NULL; |
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461 |
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462 size_t n = gIR->dtors.size(); |
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463 if (n == 1) |
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464 return gIR->dtors[0]->ir.irFunc->func; |
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465 |
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466 std::string name("_D"); |
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467 name.append(gIR->dmodule->mangle()); |
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468 name.append("6__dtorZ"); |
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469 |
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470 std::vector<const LLType*> argsTy; |
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471 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::getVoidTy(gIR->context()),argsTy,false); |
184 | 472 assert(gIR->module->getFunction(name) == NULL); |
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473 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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474 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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475 |
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476 llvm::BasicBlock* bb = llvm::BasicBlock::Create(gIR->context(), "entry", fn); |
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477 IRBuilder<> builder(bb); |
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478 |
1650 | 479 #ifndef DISABLE_DEBUG_INFO |
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480 // debug info |
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481 LLGlobalVariable* subprog; |
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482 if(global.params.symdebug) { |
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483 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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484 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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485 } |
1650 | 486 #endif |
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487 |
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488 for (size_t i=0; i<n; i++) { |
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489 llvm::Function* f = gIR->dtors[i]->ir.irFunc->func; |
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490 llvm::CallInst* call = builder.CreateCall(f,""); |
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491 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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492 } |
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493 |
1650 | 494 #ifndef DISABLE_DEBUG_INFO |
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495 // debug info end |
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496 if(global.params.symdebug) |
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497 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
1650 | 498 #endif |
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499 |
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500 builder.CreateRetVoid(); |
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501 return fn; |
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502 } |
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503 |
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504 // build module unittest |
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505 |
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506 static llvm::Function* build_module_unittest() |
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507 { |
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508 if (gIR->unitTests.empty()) |
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509 return NULL; |
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510 |
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511 size_t n = gIR->unitTests.size(); |
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512 if (n == 1) |
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513 return gIR->unitTests[0]->ir.irFunc->func; |
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514 |
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515 std::string name("_D"); |
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516 name.append(gIR->dmodule->mangle()); |
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517 name.append("10__unittestZ"); |
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518 |
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519 std::vector<const LLType*> argsTy; |
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520 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::getVoidTy(gIR->context()),argsTy,false); |
184 | 521 assert(gIR->module->getFunction(name) == NULL); |
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522 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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523 fn->setCallingConv(DtoCallingConv(0, LINKd)); |
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524 |
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525 llvm::BasicBlock* bb = llvm::BasicBlock::Create(gIR->context(), "entry", fn); |
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526 IRBuilder<> builder(bb); |
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527 |
1650 | 528 #ifndef DISABLE_DEBUG_INFO |
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529 // debug info |
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530 LLGlobalVariable* subprog; |
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531 if(global.params.symdebug) { |
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532 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()).getGV(); |
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533 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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534 } |
1650 | 535 #endif |
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536 |
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537 for (size_t i=0; i<n; i++) { |
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538 llvm::Function* f = gIR->unitTests[i]->ir.irFunc->func; |
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539 llvm::CallInst* call = builder.CreateCall(f,""); |
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540 call->setCallingConv(DtoCallingConv(0, LINKd)); |
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541 } |
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542 |
1650 | 543 #ifndef DISABLE_DEBUG_INFO |
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544 // debug info end |
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545 if(global.params.symdebug) |
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546 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
1650 | 547 #endif |
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548 |
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549 builder.CreateRetVoid(); |
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550 return fn; |
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551 } |
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552 |
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553 // build ModuleReference and register function, to register the module info in the global linked list |
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554 static LLFunction* build_module_reference_and_ctor(LLConstant* moduleinfo) |
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555 { |
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556 // build ctor type |
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557 const LLFunctionType* fty = LLFunctionType::get(LLType::getVoidTy(gIR->context()), std::vector<const LLType*>(), false); |
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558 |
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559 // build ctor name |
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560 std::string fname = "_D"; |
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561 fname += gIR->dmodule->mangle(); |
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562 fname += "16__moduleinfoCtorZ"; |
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563 |
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564 // build a function that registers the moduleinfo in the global moduleinfo linked list |
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565 LLFunction* ctor = LLFunction::Create(fty, LLGlobalValue::InternalLinkage, fname, gIR->module); |
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566 |
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567 // provide the default initializer |
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568 const LLStructType* modulerefTy = DtoModuleReferenceType(); |
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569 std::vector<LLConstant*> mrefvalues; |
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570 mrefvalues.push_back(LLConstant::getNullValue(modulerefTy->getContainedType(0))); |
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571 mrefvalues.push_back(llvm::ConstantExpr::getBitCast(moduleinfo, modulerefTy->getContainedType(1))); |
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572 LLConstant* thismrefinit = LLConstantStruct::get(modulerefTy, mrefvalues); |
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573 |
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574 // create the ModuleReference node for this module |
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575 std::string thismrefname = "_D"; |
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576 thismrefname += gIR->dmodule->mangle(); |
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577 thismrefname += "11__moduleRefZ"; |
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578 LLGlobalVariable* thismref = new LLGlobalVariable(*gIR->module, modulerefTy, false, LLGlobalValue::InternalLinkage, thismrefinit, thismrefname); |
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579 |
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580 // make sure _Dmodule_ref is declared |
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581 LLGlobalVariable* mref = gIR->module->getNamedGlobal("_Dmodule_ref"); |
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582 if (!mref) |
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583 mref = new LLGlobalVariable(*gIR->module, getPtrToType(modulerefTy), false, LLGlobalValue::ExternalLinkage, NULL, "_Dmodule_ref"); |
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584 |
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585 // make the function insert this moduleinfo as the beginning of the _Dmodule_ref linked list |
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586 llvm::BasicBlock* bb = llvm::BasicBlock::Create(gIR->context(), "moduleinfoCtorEntry", ctor); |
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587 IRBuilder<> builder(bb); |
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588 |
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589 // debug info |
1650 | 590 #ifndef DISABLE_DEBUG_INFO |
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591 LLGlobalVariable* subprog; |
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592 if(global.params.symdebug) { |
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593 subprog = DtoDwarfSubProgramInternal(fname.c_str(), fname.c_str()).getGV(); |
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594 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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595 } |
1650 | 596 #endif |
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597 |
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598 // get current beginning |
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599 LLValue* curbeg = builder.CreateLoad(mref, "current"); |
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600 |
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601 // put current beginning as the next of this one |
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602 LLValue* gep = builder.CreateStructGEP(thismref, 0, "next"); |
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603 builder.CreateStore(curbeg, gep); |
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604 |
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605 // replace beginning |
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606 builder.CreateStore(thismref, mref); |
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607 |
1650 | 608 #ifndef DISABLE_DEBUG_INFO |
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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)); |
1650 | 612 #endif |
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613 |
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614 // return |
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615 builder.CreateRetVoid(); |
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616 |
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617 return ctor; |
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618 } |
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619 |
1 | 620 // Put out instance of ModuleInfo for this Module |
621 | |
622 void Module::genmoduleinfo() | |
623 { | |
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624 // The layout is: |
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625 // { |
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626 // char[] name; |
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627 // ModuleInfo[] importedModules; |
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628 // ClassInfo[] localClasses; |
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629 // uint flags; |
1650 | 630 // |
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631 // void function() ctor; |
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632 // void function() dtor; |
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633 // void function() unitTest; |
1650 | 634 // |
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635 // void* xgetMembers; |
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636 // void function() ictor; |
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637 // |
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638 // version(D_Version2) |
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639 // void*[4] reserved; // useless to us |
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640 // } |
89 | 641 |
116
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642 // resolve ModuleInfo |
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643 if (!moduleinfo) |
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644 { |
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645 error("object.d is missing the ModuleInfo class"); |
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646 fatal(); |
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647 } |
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648 // check for patch |
1453 | 649 #if DMDV2 |
650 else if (moduleinfo->fields.dim != 10) | |
651 #else | |
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652 else if (moduleinfo->fields.dim != 9) |
1453 | 653 #endif |
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654 { |
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655 error("object.d ModuleInfo class is incorrect"); |
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656 fatal(); |
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657 } |
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658 |
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659 // use the RTTIBuilder |
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660 RTTIBuilder b(moduleinfo); |
89 | 661 |
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662 // some types |
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663 const LLType* moduleinfoTy = moduleinfo->type->irtype->getPA(); |
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664 const LLType* classinfoTy = ClassDeclaration::classinfo->type->irtype->getPA(); |
89 | 665 |
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666 // name |
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667 b.push_string(toPrettyChars()); |
89 | 668 |
669 // importedModules[] | |
670 int aimports_dim = aimports.dim; | |
213
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671 std::vector<LLConstant*> importInits; |
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672 LLConstant* c = 0; |
116
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673 for (size_t i = 0; i < aimports.dim; i++) |
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674 { |
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675 Module *m = (Module *)aimports.data[i]; |
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676 if (!m->needModuleInfo() || m == this) |
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677 continue; |
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678 |
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679 // declare the imported module info |
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680 std::string m_name("_D"); |
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681 m_name.append(m->mangle()); |
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682 m_name.append("8__ModuleZ"); |
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683 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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684 if (!m_gvar) m_gvar = new llvm::GlobalVariable(*gIR->module, moduleinfoTy, false, llvm::GlobalValue::ExternalLinkage, NULL, m_name); |
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685 importInits.push_back(m_gvar); |
89 | 686 } |
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687 // has import array? |
133
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688 if (!importInits.empty()) |
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689 { |
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690 const llvm::ArrayType* importArrTy = llvm::ArrayType::get(getPtrToType(moduleinfoTy), importInits.size()); |
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691 c = LLConstantArray::get(importArrTy, importInits); |
116
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692 std::string m_name("_D"); |
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693 m_name.append(mangle()); |
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694 m_name.append("9__importsZ"); |
163
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695 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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696 if (!m_gvar) m_gvar = new llvm::GlobalVariable(*gIR->module, importArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name); |
133
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697 c = llvm::ConstantExpr::getBitCast(m_gvar, getPtrToType(importArrTy->getElementType())); |
116
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698 c = DtoConstSlice(DtoConstSize_t(importInits.size()), c); |
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699 } |
89 | 700 else |
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701 { |
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702 c = DtoConstSlice( DtoConstSize_t(0), getNullValue(getPtrToType(moduleinfoTy)) ); |
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703 } |
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704 b.push(c); |
89 | 705 |
706 // localClasses[] | |
116
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707 ClassDeclarations aclasses; |
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708 //printf("members->dim = %d\n", members->dim); |
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709 for (size_t i = 0; i < members->dim; i++) |
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710 { |
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711 Dsymbol *member; |
89 | 712 |
116
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713 member = (Dsymbol *)members->data[i]; |
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714 //printf("\tmember '%s'\n", member->toChars()); |
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715 member->addLocalClass(&aclasses); |
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716 } |
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717 // fill inits |
213
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718 std::vector<LLConstant*> classInits; |
116
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719 for (size_t i = 0; i < aclasses.dim; i++) |
89 | 720 { |
116
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721 ClassDeclaration* cd = (ClassDeclaration*)aclasses.data[i]; |
1147
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722 cd->codegen(Type::sir); |
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Changed use of toObjFile to a new codegen method.
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723 |
133
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724 if (cd->isInterfaceDeclaration()) |
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725 { |
136
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726 Logger::println("skipping interface '%s' in moduleinfo", cd->toPrettyChars()); |
133
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727 continue; |
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728 } |
797
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729 else if (cd->sizeok != 1) |
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|
730 { |
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|
731 Logger::println("skipping opaque class declaration '%s' in moduleinfo", cd->toPrettyChars()); |
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732 continue; |
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|
733 } |
132 | 734 Logger::println("class: %s", cd->toPrettyChars()); |
1228
79758fd2f48a
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|
735 c = DtoBitCast(cd->ir.irStruct->getClassInfoSymbol(), getPtrToType(classinfoTy)); |
797
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736 classInits.push_back(c); |
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737 } |
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738 // has class array? |
133
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739 if (!classInits.empty()) |
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740 { |
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741 const llvm::ArrayType* classArrTy = llvm::ArrayType::get(getPtrToType(classinfoTy), classInits.size()); |
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742 c = LLConstantArray::get(classArrTy, classInits); |
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743 std::string m_name("_D"); |
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744 m_name.append(mangle()); |
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745 m_name.append("9__classesZ"); |
184 | 746 assert(gIR->module->getGlobalVariable(m_name) == NULL); |
1529
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|
747 llvm::GlobalVariable* m_gvar = new llvm::GlobalVariable(*gIR->module, classArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name); |
1450
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748 c = DtoGEPi(m_gvar, 0, 0); |
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749 c = DtoConstSlice(DtoConstSize_t(classInits.size()), c); |
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750 } |
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751 else |
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752 c = DtoConstSlice( DtoConstSize_t(0), getNullValue(getPtrToType(getPtrToType(classinfoTy))) ); |
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753 b.push(c); |
89 | 754 |
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755 // flags (4 means MIstandalone) |
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756 unsigned mi_flags = needmoduleinfo ? 0 : 4; |
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757 b.push_uint(mi_flags); |
89 | 758 |
811
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|
759 // function pointer type for next three fields |
1571
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parents:
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changeset
|
760 const LLType* fnptrTy = getPtrToType(LLFunctionType::get(LLType::getVoidTy(gIR->context()), std::vector<const LLType*>(), false)); |
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761 |
116
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762 // ctor |
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763 llvm::Function* fctor = build_module_ctor(); |
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764 c = fctor ? fctor : getNullValue(fnptrTy); |
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765 b.push(c); |
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766 |
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767 // dtor |
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768 llvm::Function* fdtor = build_module_dtor(); |
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769 c = fdtor ? fdtor : getNullValue(fnptrTy); |
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770 b.push(c); |
89 | 771 |
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772 // unitTest |
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773 llvm::Function* unittest = build_module_unittest(); |
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774 c = unittest ? unittest : getNullValue(fnptrTy); |
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775 b.push(c); |
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776 |
132 | 777 // xgetMembers |
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778 c = getNullValue(getVoidPtrType()); |
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779 b.push(c); |
132 | 780 |
781 // ictor | |
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782 c = getNullValue(fnptrTy); |
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783 b.push(c); |
132 | 784 |
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785 #if DMDV2 |
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786 |
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787 // void*[4] reserved :/ |
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788 const LLType* AT = llvm::ArrayType::get(getVoidPtrType(), 4); |
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789 c = getNullValue(AT); |
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790 b.push(c); |
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791 |
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792 #endif |
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793 |
132 | 794 /*Logger::println("MODULE INFO INITIALIZERS"); |
795 for (size_t i=0; i<initVec.size(); ++i) | |
796 { | |
797 Logger::cout() << *initVec[i] << '\n'; | |
798 if (initVec[i]->getType() != moduleinfoTy->getElementType(i)) | |
799 assert(0); | |
800 }*/ | |
801 | |
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802 // create initializer |
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803 LLConstant* constMI = b.get_constant(); |
89 | 804 |
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805 // create name |
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806 std::string MIname("_D"); |
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807 MIname.append(mangle()); |
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808 MIname.append("8__ModuleZ"); |
89 | 809 |
824
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810 // declare global |
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811 // flags will be modified at runtime so can't make it constant |
184 | 812 |
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813 // it makes no sense that the our own module info already exists! |
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814 assert(!gIR->module->getGlobalVariable(MIname)); |
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815 llvm::GlobalVariable* gvar = new llvm::GlobalVariable(*gIR->module, constMI->getType(), false, llvm::GlobalValue::ExternalLinkage, constMI, MIname); |
117 | 816 |
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817 // build the modulereference and ctor for registering it |
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818 LLFunction* mictor = build_module_reference_and_ctor(gvar); |
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819 |
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820 // register this ctor in the magic llvm.global_ctors appending array |
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821 const LLFunctionType* magicfty = LLFunctionType::get(LLType::getVoidTy(gIR->context()), std::vector<const LLType*>(), false); |
323
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822 std::vector<const LLType*> magictypes; |
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823 magictypes.push_back(LLType::getInt32Ty(gIR->context())); |
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824 magictypes.push_back(getPtrToType(magicfty)); |
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825 const LLStructType* magicsty = LLStructType::get(gIR->context(), magictypes); |
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826 |
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827 // make the constant element |
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828 std::vector<LLConstant*> magicconstants; |
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829 magicconstants.push_back(DtoConstUint(65535)); |
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830 magicconstants.push_back(mictor); |
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831 LLConstant* magicinit = LLConstantStruct::get(magicsty, magicconstants); |
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832 |
117 | 833 // declare the appending array |
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834 const llvm::ArrayType* appendArrTy = llvm::ArrayType::get(magicsty, 1); |
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835 std::vector<LLConstant*> appendInits(1, magicinit); |
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836 LLConstant* appendInit = LLConstantArray::get(appendArrTy, appendInits); |
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837 std::string appendName("llvm.global_ctors"); |
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838 llvm::GlobalVariable* appendVar = new llvm::GlobalVariable(*gIR->module, appendArrTy, true, llvm::GlobalValue::AppendingLinkage, appendInit, appendName); |
1 | 839 } |