Mercurial > projects > ldc
annotate gen/toobj.cpp @ 694:931333ea35c6
Allow output of only bc, ll, or s by making -of set the output type depending
on the extension.
author | Christian Kamm <kamm incasoftware de> |
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date | Mon, 13 Oct 2008 10:58:00 +0200 |
parents | 06c05906b054 |
children | ed9a9e6dd1cc |
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 <iostream> | |
12 #include <fstream> | |
13 | |
40 | 14 #include "gen/llvm.h" |
1 | 15 #include "llvm/Analysis/Verifier.h" |
16 #include "llvm/Bitcode/ReaderWriter.h" | |
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17 #include "llvm/Target/SubtargetFeature.h" |
1 | 18 #include "llvm/Target/TargetMachine.h" |
19 #include "llvm/Target/TargetMachineRegistry.h" | |
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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/System/Path.h" |
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26 #include "llvm/Support/raw_ostream.h" |
1 | 27 |
28 #include "mars.h" | |
29 #include "module.h" | |
30 #include "mtype.h" | |
31 #include "declaration.h" | |
32 #include "statement.h" | |
33 #include "enum.h" | |
34 #include "aggregate.h" | |
35 #include "init.h" | |
36 #include "attrib.h" | |
37 #include "id.h" | |
38 #include "import.h" | |
39 #include "template.h" | |
18 | 40 #include "scope.h" |
1 | 41 |
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42 #include "gen/irstate.h" |
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43 #include "gen/logger.h" |
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44 #include "gen/tollvm.h" |
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45 #include "gen/llvmhelpers.h" |
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46 #include "gen/arrays.h" |
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47 #include "gen/structs.h" |
100 | 48 #include "gen/classes.h" |
49 #include "gen/functions.h" | |
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50 #include "gen/todebug.h" |
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51 #include "gen/runtime.h" |
1 | 52 |
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53 #include "ir/irvar.h" |
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54 #include "ir/irmodule.h" |
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55 |
1 | 56 ////////////////////////////////////////////////////////////////////////////////////////// |
57 | |
125 | 58 // in gen/optimize.cpp |
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59 void ldc_optimize_module(llvm::Module* m, char lvl, bool doinline); |
125 | 60 |
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61 // fwd decl |
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62 void write_asm_to_file(llvm::Module& m, llvm::raw_fd_ostream& Out); |
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63 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath, char** envp); |
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64 |
125 | 65 ////////////////////////////////////////////////////////////////////////////////////////// |
66 | |
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67 void Module::genobjfile(int multiobj, char** envp) |
1 | 68 { |
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69 bool logenabled = Logger::enabled(); |
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70 if (llvmForceLogging && !logenabled) |
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71 { |
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72 Logger::enable(); |
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73 } |
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74 |
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75 Logger::println("Generating module: %s\n", (md ? md->toChars() : toChars())); |
1 | 76 LOG_SCOPE; |
77 | |
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78 // printf("codegen: %s\n", srcfile->toChars()); |
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79 |
6 | 80 // start by deleting the old object file |
1 | 81 deleteObjFile(); |
82 | |
18 | 83 // create a new ir state |
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84 // TODO look at making the instance static and moving most functionality into IrModule where it belongs |
1 | 85 IRState ir; |
86 gIR = &ir; | |
87 ir.dmodule = this; | |
88 | |
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89 // reset all IR data stored in Dsymbols and Types |
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90 IrDsymbol::resetAll(); |
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91 IrType::resetAll(); |
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92 |
6 | 93 // name the module |
1 | 94 std::string mname(toChars()); |
95 if (md != 0) | |
96 mname = md->toChars(); | |
97 ir.module = new llvm::Module(mname); | |
98 | |
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99 // module ir state |
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100 // might already exist via import, just overwrite... |
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101 //FIXME: is there a good reason for overwriting? |
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102 this->ir.irModule = new IrModule(this, srcfile->toChars()); |
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103 |
6 | 104 // set target stuff |
1 | 105 std::string target_triple(global.params.tt_arch); |
106 target_triple.append(global.params.tt_os); | |
107 ir.module->setTargetTriple(target_triple); | |
108 ir.module->setDataLayout(global.params.data_layout); | |
109 | |
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110 gTargetData = new llvm::TargetData(global.params.data_layout); |
1 | 111 |
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112 // debug info |
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113 if (global.params.symdebug) { |
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114 RegisterDwarfSymbols(ir.module); |
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115 DtoDwarfCompileUnit(this); |
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116 } |
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117 |
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118 // start out by providing opaque for the built-in class types |
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119 if (!ClassDeclaration::object->type->ir.type) |
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120 ClassDeclaration::object->type->ir.type = new llvm::PATypeHolder(llvm::OpaqueType::get()); |
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121 |
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122 if (!Type::typeinfo->type->ir.type) |
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123 Type::typeinfo->type->ir.type = new llvm::PATypeHolder(llvm::OpaqueType::get()); |
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124 |
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125 if (!ClassDeclaration::classinfo->type->ir.type) |
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126 ClassDeclaration::classinfo->type->ir.type = new llvm::PATypeHolder(llvm::OpaqueType::get()); |
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127 |
6 | 128 // process module members |
1 | 129 for (int k=0; k < members->dim; k++) { |
130 Dsymbol* dsym = (Dsymbol*)(members->data[k]); | |
131 assert(dsym); | |
336 | 132 dsym->toObjFile(multiobj); |
1 | 133 } |
134 | |
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135 // main driver loop |
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136 DtoEmptyAllLists(); |
89 | 137 // generate ModuleInfo |
138 genmoduleinfo(); | |
116
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139 // do this again as moduleinfo might have pulled something in! |
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140 DtoEmptyAllLists(); |
89 | 141 |
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142 // emit usedArray |
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143 if (!ir.usedArray.empty()) |
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144 { |
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145 const LLArrayType* usedTy = LLArrayType::get(getVoidPtrType(), ir.usedArray.size()); |
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146 LLConstant* usedInit = LLConstantArray::get(usedTy, ir.usedArray); |
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147 LLGlobalVariable* usedArray = new LLGlobalVariable(usedTy, true, LLGlobalValue::AppendingLinkage, usedInit, "llvm.used", ir.module); |
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148 usedArray->setSection("llvm.metadata"); |
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149 } |
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150 |
6 | 151 // verify the llvm |
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152 if (!global.params.novalidate) { |
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153 std::string verifyErr; |
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154 Logger::println("Verifying module..."); |
117 | 155 LOG_SCOPE; |
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156 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) |
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157 { |
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158 error("%s", verifyErr.c_str()); |
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159 fatal(); |
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160 } |
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161 else { |
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162 Logger::println("Verification passed!"); |
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163 } |
1 | 164 } |
165 | |
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166 // always run this pass to eliminate dead code that breaks debug info |
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167 llvm::PassManager pm; |
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168 pm.add(new llvm::TargetData(ir.module)); |
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169 pm.add(llvm::createCFGSimplificationPass()); |
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170 pm.run(*ir.module); |
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171 |
125 | 172 // run optimizer |
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173 ldc_optimize_module(ir.module, global.params.optimizeLevel, global.params.llvmInline); |
1 | 174 |
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175 // verify the llvm |
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176 if (!global.params.novalidate && (global.params.optimizeLevel >= 0 || global.params.llvmInline)) { |
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177 std::string verifyErr; |
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178 Logger::println("Verifying module... again..."); |
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179 LOG_SCOPE; |
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180 if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr)) |
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181 { |
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182 error("%s", verifyErr.c_str()); |
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183 fatal(); |
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184 } |
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185 else { |
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186 Logger::println("Verification passed!"); |
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187 } |
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188 } |
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189 |
217
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190 // eventually do our own path stuff, dmd's is a bit strange. |
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191 typedef llvm::sys::Path LLPath; |
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192 |
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193 // write LLVM bitcode |
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194 if (global.params.output_bc) { |
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195 LLPath bcpath = LLPath(objfile->name->toChars()); |
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196 bcpath.eraseSuffix(); |
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197 bcpath.appendSuffix(std::string(global.bc_ext)); |
393
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198 Logger::println("Writing LLVM bitcode to: %s\n", bcpath.c_str()); |
217
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199 std::ofstream bos(bcpath.c_str(), std::ios::binary); |
52 | 200 llvm::WriteBitcodeToFile(ir.module, bos); |
201 } | |
1 | 202 |
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203 // write LLVM IR |
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204 if (global.params.output_ll) { |
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205 LLPath llpath = LLPath(objfile->name->toChars()); |
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206 llpath.eraseSuffix(); |
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207 llpath.appendSuffix(std::string(global.ll_ext)); |
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208 Logger::println("Writing LLVM asm to: %s\n", llpath.c_str()); |
217
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209 std::ofstream aos(llpath.c_str()); |
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210 ir.module->print(aos, NULL); |
52 | 211 } |
1 | 212 |
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213 // write native assembly |
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214 if (global.params.output_s || global.params.output_o) { |
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215 LLPath spath = LLPath(objfile->name->toChars()); |
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216 spath.eraseSuffix(); |
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217 spath.appendSuffix(std::string(global.s_ext)); |
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218 if (!global.params.output_s) { |
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219 spath.createTemporaryFileOnDisk(); |
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220 } |
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221 Logger::println("Writing native asm to: %s\n", spath.c_str()); |
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222 std::string err; |
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223 { |
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224 llvm::raw_fd_ostream out(spath.c_str(), err); |
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225 write_asm_to_file(*ir.module, out); |
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226 } |
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227 |
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228 // call gcc to convert assembly to object file |
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229 if (global.params.output_o) { |
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230 LLPath objpath = LLPath(objfile->name->toChars()); |
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231 objpath.eraseSuffix(); |
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232 objpath.appendSuffix(std::string(global.obj_ext)); |
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233 assemble(spath, objpath, envp); |
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234 } |
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235 |
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236 if (!global.params.output_s) { |
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237 spath.eraseFromDisk(); |
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238 } |
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239 } |
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240 |
1 | 241 delete ir.module; |
125 | 242 gTargetData = 0; |
1 | 243 gIR = NULL; |
486
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244 |
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245 if (llvmForceLogging && !logenabled) |
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246 { |
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247 Logger::disable(); |
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248 } |
1 | 249 } |
250 | |
251 /* ================================================================== */ | |
252 | |
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253 // based on llc code, University of Illinois Open Source License |
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254 void write_asm_to_file(llvm::Module& m, llvm::raw_fd_ostream& out) |
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255 { |
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256 using namespace llvm; |
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257 |
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258 std::string Err; |
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259 |
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260 const TargetMachineRegistry::entry* MArch; |
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261 MArch = TargetMachineRegistry::getClosestStaticTargetForModule(m, Err); |
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262 if (MArch == 0) { |
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263 error("error auto-selecting target for module '%s'", Err.c_str()); |
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264 fatal(); |
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265 } |
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266 |
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267 SubtargetFeatures Features; |
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268 //TODO: Features? |
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269 // Features.setCPU(MCPU); |
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270 // for (unsigned i = 0; i != MAttrs.size(); ++i) |
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271 // Features.AddFeature(MAttrs[i]); |
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272 |
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273 //FIXME: Only set this if required? |
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274 TargetMachine::setRelocationModel(Reloc::PIC_); |
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275 |
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276 std::auto_ptr<TargetMachine> target(MArch->CtorFn(m, Features.getString())); |
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277 assert(target.get() && "Could not allocate target machine!"); |
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278 TargetMachine &Target = *target.get(); |
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279 |
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280 // Build up all of the passes that we want to do to the module. |
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281 ExistingModuleProvider Provider(&m); |
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282 FunctionPassManager Passes(&Provider); |
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283 //FIXME: Will gTargetData always be Target.getTargetData anyway? |
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284 assert(gTargetData->getStringRepresentation() == Target.getTargetData()->getStringRepresentation()); |
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285 Passes.add(new TargetData(*Target.getTargetData())); |
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286 |
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287 // Ask the target to add backend passes as necessary. |
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288 MachineCodeEmitter *MCE = 0; |
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289 |
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290 //TODO: May want to switch it on for -O0? |
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291 bool Fast = false; |
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292 FileModel::Model mod = Target.addPassesToEmitFile(Passes, out, TargetMachine::AssemblyFile, Fast); |
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293 assert(mod == FileModel::AsmFile); |
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294 |
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295 bool err = Target.addPassesToEmitFileFinish(Passes, MCE, Fast); |
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296 assert(!err); |
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297 |
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298 Passes.doInitialization(); |
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299 |
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300 // Run our queue of passes all at once now, efficiently. |
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301 for (llvm::Module::iterator I = m.begin(), E = m.end(); I != E; ++I) |
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302 if (!I->isDeclaration()) |
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303 Passes.run(*I); |
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304 |
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305 Passes.doFinalization(); |
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306 |
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307 // release module from module provider so we can delete it ourselves |
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308 llvm::Module* rmod = Provider.releaseModule(&Err); |
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309 assert(rmod); |
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310 } |
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311 |
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312 /* ================================================================== */ |
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313 |
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314 // helper functions for gcc call to assemble |
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315 // based on llvm-ld code, University of Illinois Open Source License |
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316 |
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317 /// CopyEnv - This function takes an array of environment variables and makes a |
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318 /// copy of it. This copy can then be manipulated any way the caller likes |
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319 /// without affecting the process's real environment. |
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320 /// |
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321 /// Inputs: |
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322 /// envp - An array of C strings containing an environment. |
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323 /// |
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324 /// Return value: |
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325 /// NULL - An error occurred. |
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326 /// |
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327 /// Otherwise, a pointer to a new array of C strings is returned. Every string |
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328 /// in the array is a duplicate of the one in the original array (i.e. we do |
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329 /// not copy the char *'s from one array to another). |
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330 /// |
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331 static char ** CopyEnv(char ** const envp) { |
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332 // Count the number of entries in the old list; |
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333 unsigned entries; // The number of entries in the old environment list |
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334 for (entries = 0; envp[entries] != NULL; entries++) |
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335 /*empty*/; |
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336 |
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337 // Add one more entry for the NULL pointer that ends the list. |
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338 ++entries; |
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339 |
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340 // If there are no entries at all, just return NULL. |
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341 if (entries == 0) |
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342 return NULL; |
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343 |
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344 // Allocate a new environment list. |
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345 char **newenv = new char* [entries]; |
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346 if ((newenv = new char* [entries]) == NULL) |
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347 return NULL; |
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348 |
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349 // Make a copy of the list. Don't forget the NULL that ends the list. |
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350 entries = 0; |
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351 while (envp[entries] != NULL) { |
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352 newenv[entries] = new char[strlen (envp[entries]) + 1]; |
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353 strcpy (newenv[entries], envp[entries]); |
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354 ++entries; |
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355 } |
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356 newenv[entries] = NULL; |
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357 |
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358 return newenv; |
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359 } |
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360 |
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361 // based on llvm-ld code, University of Illinois Open Source License |
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362 |
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363 /// RemoveEnv - Remove the specified environment variable from the environment |
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364 /// array. |
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365 /// |
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366 /// Inputs: |
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367 /// name - The name of the variable to remove. It cannot be NULL. |
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368 /// envp - The array of environment variables. It cannot be NULL. |
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369 /// |
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370 /// Notes: |
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371 /// This is mainly done because functions to remove items from the environment |
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372 /// are not available across all platforms. In particular, Solaris does not |
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373 /// seem to have an unsetenv() function or a setenv() function (or they are |
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374 /// undocumented if they do exist). |
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375 /// |
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376 static void RemoveEnv(const char * name, char ** const envp) { |
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377 for (unsigned index=0; envp[index] != NULL; index++) { |
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378 // Find the first equals sign in the array and make it an EOS character. |
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379 char *p = strchr (envp[index], '='); |
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380 if (p == NULL) |
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381 continue; |
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382 else |
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383 *p = '\0'; |
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384 |
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385 // Compare the two strings. If they are equal, zap this string. |
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386 // Otherwise, restore it. |
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387 if (!strcmp(name, envp[index])) |
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388 *envp[index] = '\0'; |
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389 else |
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390 *p = '='; |
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391 } |
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392 |
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393 return; |
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394 } |
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395 |
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396 // uses gcc to make an obj out of an assembly file |
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397 // based on llvm-ld code, University of Illinois Open Source License |
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398 void assemble(const llvm::sys::Path& asmpath, const llvm::sys::Path& objpath, char** envp) |
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399 { |
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400 using namespace llvm; |
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401 |
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402 sys::Path gcc = llvm::sys::Program::FindProgramByName("gcc"); |
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403 |
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404 // Remove these environment variables from the environment of the |
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405 // programs that we will execute. It appears that GCC sets these |
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406 // environment variables so that the programs it uses can configure |
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407 // themselves identically. |
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408 // |
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409 // However, when we invoke GCC below, we want it to use its normal |
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410 // configuration. Hence, we must sanitize its environment. |
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411 char ** clean_env = CopyEnv(envp); |
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412 if (clean_env == NULL) |
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413 return; |
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414 RemoveEnv("LIBRARY_PATH", clean_env); |
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415 RemoveEnv("COLLECT_GCC_OPTIONS", clean_env); |
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416 RemoveEnv("GCC_EXEC_PREFIX", clean_env); |
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417 RemoveEnv("COMPILER_PATH", clean_env); |
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418 RemoveEnv("COLLECT_GCC", clean_env); |
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419 |
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420 |
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421 // Run GCC to assemble and link the program into native code. |
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422 // |
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423 // Note: |
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424 // We can't just assemble and link the file with the system assembler |
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425 // and linker because we don't know where to put the _start symbol. |
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426 // GCC mysteriously knows how to do it. |
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427 std::vector<std::string> args; |
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428 args.push_back(gcc.toString()); |
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429 args.push_back("-fno-strict-aliasing"); |
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430 args.push_back("-O3"); |
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431 args.push_back("-c"); |
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432 args.push_back("-xassembler"); |
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433 args.push_back(asmpath.toString()); |
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434 args.push_back("-o"); |
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435 args.push_back(objpath.toString()); |
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436 |
677
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437 //FIXME: only use this if needed? |
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438 args.push_back("-fpic"); |
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439 |
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440 // Now that "args" owns all the std::strings for the arguments, call the c_str |
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441 // method to get the underlying string array. We do this game so that the |
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442 // std::string array is guaranteed to outlive the const char* array. |
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443 std::vector<const char *> Args; |
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444 for (unsigned i = 0, e = args.size(); i != e; ++i) |
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445 Args.push_back(args[i].c_str()); |
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446 Args.push_back(0); |
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447 |
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448 Logger::println("Assembling with: "); |
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449 std::vector<const char*>::const_iterator I = Args.begin(), E = Args.end(); |
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450 std::ostream& logstr = Logger::cout(); |
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451 for (; I != E; ++I) |
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452 if (*I) |
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453 logstr << "'" << *I << "'" << " "; |
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454 logstr << "\n" << std::flush; |
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455 |
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456 // Run the compiler to assembly the program. |
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457 std::string ErrMsg; |
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458 int R = sys::Program::ExecuteAndWait( |
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459 gcc, &Args[0], (const char**)clean_env, 0, 0, 0, &ErrMsg); |
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460 delete [] clean_env; |
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461 } |
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462 |
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463 |
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464 /* ================================================================== */ |
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465 |
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466 // the following code generates functions and needs to output |
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467 // debug info. these macros are useful for that |
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468 #define DBG_TYPE ( getPtrToType(llvm::StructType::get(NULL,NULL)) ) |
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469 #define DBG_CAST(X) ( llvm::ConstantExpr::getBitCast(X, DBG_TYPE) ) |
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470 |
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471 // build module ctor |
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472 |
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473 llvm::Function* build_module_ctor() |
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474 { |
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475 if (gIR->ctors.empty()) |
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476 return NULL; |
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477 |
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478 size_t n = gIR->ctors.size(); |
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479 if (n == 1) |
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480 return gIR->ctors[0]->ir.irFunc->func; |
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481 |
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482 std::string name("_D"); |
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483 name.append(gIR->dmodule->mangle()); |
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484 name.append("6__ctorZ"); |
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485 |
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486 std::vector<const LLType*> argsTy; |
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487 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 488 assert(gIR->module->getFunction(name) == NULL); |
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489 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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490 fn->setCallingConv(llvm::CallingConv::Fast); |
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491 |
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492 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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493 IRBuilder<> builder(bb); |
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494 |
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495 // debug info |
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496 LLGlobalVariable* subprog; |
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497 if(global.params.symdebug) { |
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498 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()); |
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499 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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500 } |
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501 |
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502 for (size_t i=0; i<n; i++) { |
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503 llvm::Function* f = gIR->ctors[i]->ir.irFunc->func; |
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504 llvm::CallInst* call = builder.CreateCall(f,""); |
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505 call->setCallingConv(llvm::CallingConv::Fast); |
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506 } |
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507 |
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508 // debug info end |
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509 if(global.params.symdebug) |
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510 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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511 |
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512 builder.CreateRetVoid(); |
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513 return fn; |
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514 } |
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515 |
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516 // build module dtor |
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517 |
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518 static llvm::Function* build_module_dtor() |
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519 { |
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520 if (gIR->dtors.empty()) |
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521 return NULL; |
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522 |
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523 size_t n = gIR->dtors.size(); |
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524 if (n == 1) |
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525 return gIR->dtors[0]->ir.irFunc->func; |
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526 |
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527 std::string name("_D"); |
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528 name.append(gIR->dmodule->mangle()); |
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529 name.append("6__dtorZ"); |
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530 |
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531 std::vector<const LLType*> argsTy; |
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532 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 533 assert(gIR->module->getFunction(name) == NULL); |
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534 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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535 fn->setCallingConv(llvm::CallingConv::Fast); |
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536 |
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537 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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538 IRBuilder<> builder(bb); |
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539 |
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540 // debug info |
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541 LLGlobalVariable* subprog; |
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542 if(global.params.symdebug) { |
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543 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()); |
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544 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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545 } |
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546 |
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547 for (size_t i=0; i<n; i++) { |
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548 llvm::Function* f = gIR->dtors[i]->ir.irFunc->func; |
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549 llvm::CallInst* call = builder.CreateCall(f,""); |
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550 call->setCallingConv(llvm::CallingConv::Fast); |
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551 } |
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552 |
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553 // debug info end |
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554 if(global.params.symdebug) |
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555 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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556 |
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557 builder.CreateRetVoid(); |
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558 return fn; |
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559 } |
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560 |
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561 // build module unittest |
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562 |
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563 static llvm::Function* build_module_unittest() |
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564 { |
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565 if (gIR->unitTests.empty()) |
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566 return NULL; |
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567 |
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568 size_t n = gIR->unitTests.size(); |
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569 if (n == 1) |
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570 return gIR->unitTests[0]->ir.irFunc->func; |
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571 |
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572 std::string name("_D"); |
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573 name.append(gIR->dmodule->mangle()); |
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574 name.append("10__unittestZ"); |
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575 |
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576 std::vector<const LLType*> argsTy; |
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577 const llvm::FunctionType* fnTy = llvm::FunctionType::get(LLType::VoidTy,argsTy,false); |
184 | 578 assert(gIR->module->getFunction(name) == NULL); |
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579 llvm::Function* fn = llvm::Function::Create(fnTy, llvm::GlobalValue::InternalLinkage, name, gIR->module); |
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580 fn->setCallingConv(llvm::CallingConv::Fast); |
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581 |
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582 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry", fn); |
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583 IRBuilder<> builder(bb); |
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584 |
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585 // debug info |
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586 LLGlobalVariable* subprog; |
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587 if(global.params.symdebug) { |
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588 subprog = DtoDwarfSubProgramInternal(name.c_str(), name.c_str()); |
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589 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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590 } |
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591 |
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592 for (size_t i=0; i<n; i++) { |
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593 llvm::Function* f = gIR->unitTests[i]->ir.irFunc->func; |
316
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594 llvm::CallInst* call = builder.CreateCall(f,""); |
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595 call->setCallingConv(llvm::CallingConv::Fast); |
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596 } |
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597 |
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598 // debug info end |
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599 if(global.params.symdebug) |
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600 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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601 |
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602 builder.CreateRetVoid(); |
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603 return fn; |
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604 } |
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605 |
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606 // build ModuleReference and register function, to register the module info in the global linked list |
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607 static LLFunction* build_module_reference_and_ctor(LLConstant* moduleinfo) |
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608 { |
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609 // build ctor type |
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610 const LLFunctionType* fty = LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false); |
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611 |
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612 // build ctor name |
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613 std::string fname = "_D"; |
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614 fname += gIR->dmodule->mangle(); |
323
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615 fname += "16__moduleinfoCtorZ"; |
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616 |
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617 // build a function that registers the moduleinfo in the global moduleinfo linked list |
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618 LLFunction* ctor = LLFunction::Create(fty, LLGlobalValue::InternalLinkage, fname, gIR->module); |
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619 |
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620 // provide the default initializer |
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621 const LLStructType* modulerefTy = DtoModuleReferenceType(); |
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622 std::vector<LLConstant*> mrefvalues; |
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623 mrefvalues.push_back(LLConstant::getNullValue(modulerefTy->getContainedType(0))); |
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624 mrefvalues.push_back(moduleinfo); |
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625 LLConstant* thismrefinit = LLConstantStruct::get(modulerefTy, mrefvalues); |
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626 |
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627 // create the ModuleReference node for this module |
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628 std::string thismrefname = "_D"; |
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629 thismrefname += gIR->dmodule->mangle(); |
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630 thismrefname += "11__moduleRefZ"; |
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631 LLGlobalVariable* thismref = new LLGlobalVariable(modulerefTy, false, LLGlobalValue::InternalLinkage, thismrefinit, thismrefname, gIR->module); |
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632 |
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633 // make sure _Dmodule_ref is declared |
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634 LLGlobalVariable* mref = gIR->module->getNamedGlobal("_Dmodule_ref"); |
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635 if (!mref) |
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636 mref = new LLGlobalVariable(getPtrToType(modulerefTy), false, LLGlobalValue::ExternalLinkage, NULL, "_Dmodule_ref", gIR->module); |
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637 |
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638 // make the function insert this moduleinfo as the beginning of the _Dmodule_ref linked list |
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639 llvm::BasicBlock* bb = llvm::BasicBlock::Create("moduleinfoCtorEntry", ctor); |
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640 IRBuilder<> builder(bb); |
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641 |
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642 // debug info |
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643 LLGlobalVariable* subprog; |
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644 if(global.params.symdebug) { |
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645 subprog = DtoDwarfSubProgramInternal(fname.c_str(), fname.c_str()); |
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646 builder.CreateCall(gIR->module->getFunction("llvm.dbg.func.start"), DBG_CAST(subprog)); |
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647 } |
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648 |
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649 // get current beginning |
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650 LLValue* curbeg = builder.CreateLoad(mref, "current"); |
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651 |
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652 // put current beginning as the next of this one |
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653 LLValue* gep = builder.CreateStructGEP(thismref, 0, "next"); |
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654 builder.CreateStore(curbeg, gep); |
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655 |
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656 // replace beginning |
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657 builder.CreateStore(thismref, mref); |
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658 |
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659 // debug info end |
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660 if(global.params.symdebug) |
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661 builder.CreateCall(gIR->module->getFunction("llvm.dbg.region.end"), DBG_CAST(subprog)); |
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662 |
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663 // return |
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664 builder.CreateRetVoid(); |
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665 |
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666 return ctor; |
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667 } |
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668 |
1 | 669 // Put out instance of ModuleInfo for this Module |
670 | |
671 void Module::genmoduleinfo() | |
672 { | |
89 | 673 // The layout is: |
674 // { | |
675 // void **vptr; | |
676 // monitor_t monitor; | |
677 // char[] name; // class name | |
678 // ModuleInfo importedModules[]; | |
679 // ClassInfo localClasses[]; | |
680 // uint flags; // initialization state | |
681 // void *ctor; | |
682 // void *dtor; | |
683 // void *unitTest; | |
684 // } | |
685 | |
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686 // resolve ModuleInfo |
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687 assert(moduleinfo); |
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688 DtoForceConstInitDsymbol(moduleinfo); |
89 | 689 |
116
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690 // moduleinfo llvm struct type |
173
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691 const llvm::StructType* moduleinfoTy = isaStruct(moduleinfo->type->ir.type->get()); |
89 | 692 |
116
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693 // classinfo llvm struct type |
173
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694 const llvm::StructType* classinfoTy = isaStruct(ClassDeclaration::classinfo->type->ir.type->get()); |
89 | 695 |
116
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696 // initializer vector |
213
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697 std::vector<LLConstant*> initVec; |
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698 LLConstant* c = 0; |
116
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699 |
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700 // vtable |
173
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701 c = moduleinfo->ir.irStruct->vtbl; |
116
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702 initVec.push_back(c); |
89 | 703 |
116
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704 // monitor |
244
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705 c = getNullPtr(getPtrToType(LLType::Int8Ty)); |
116
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706 initVec.push_back(c); |
89 | 707 |
116
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708 // name |
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709 char *name = toPrettyChars(); |
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710 c = DtoConstString(name); |
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711 initVec.push_back(c); |
89 | 712 |
713 // importedModules[] | |
714 int aimports_dim = aimports.dim; | |
213
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715 std::vector<LLConstant*> importInits; |
116
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716 for (size_t i = 0; i < aimports.dim; i++) |
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717 { |
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718 Module *m = (Module *)aimports.data[i]; |
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719 if (!m->needModuleInfo()) |
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720 aimports_dim--; |
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721 else { // declare |
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722 // create name |
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723 std::string m_name("_D"); |
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724 m_name.append(m->mangle()); |
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725 m_name.append("8__ModuleZ"); |
163
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726 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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727 if (!m_gvar) m_gvar = new llvm::GlobalVariable(moduleinfoTy, false, llvm::GlobalValue::ExternalLinkage, NULL, m_name, gIR->module); |
116
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728 importInits.push_back(m_gvar); |
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729 } |
89 | 730 } |
116
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731 // has import array? |
133
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732 if (!importInits.empty()) |
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733 { |
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734 const llvm::ArrayType* importArrTy = llvm::ArrayType::get(getPtrToType(moduleinfoTy), importInits.size()); |
116
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735 c = llvm::ConstantArray::get(importArrTy, importInits); |
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736 std::string m_name("_D"); |
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737 m_name.append(mangle()); |
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738 m_name.append("9__importsZ"); |
163
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739 llvm::GlobalVariable* m_gvar = gIR->module->getGlobalVariable(m_name); |
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740 if (!m_gvar) m_gvar = new llvm::GlobalVariable(importArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name, gIR->module); |
133
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741 c = llvm::ConstantExpr::getBitCast(m_gvar, getPtrToType(importArrTy->getElementType())); |
116
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742 c = DtoConstSlice(DtoConstSize_t(importInits.size()), c); |
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743 } |
89 | 744 else |
173
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745 c = moduleinfo->ir.irStruct->constInit->getOperand(3); |
116
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746 initVec.push_back(c); |
89 | 747 |
748 // localClasses[] | |
116
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749 ClassDeclarations aclasses; |
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750 //printf("members->dim = %d\n", members->dim); |
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751 for (size_t i = 0; i < members->dim; i++) |
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752 { |
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753 Dsymbol *member; |
89 | 754 |
116
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755 member = (Dsymbol *)members->data[i]; |
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756 //printf("\tmember '%s'\n", member->toChars()); |
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757 member->addLocalClass(&aclasses); |
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758 } |
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759 // fill inits |
213
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760 std::vector<LLConstant*> classInits; |
116
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761 for (size_t i = 0; i < aclasses.dim; i++) |
89 | 762 { |
116
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763 ClassDeclaration* cd = (ClassDeclaration*)aclasses.data[i]; |
133
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764 if (cd->isInterfaceDeclaration()) |
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765 { |
136
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766 Logger::println("skipping interface '%s' in moduleinfo", cd->toPrettyChars()); |
133
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767 continue; |
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768 } |
132 | 769 Logger::println("class: %s", cd->toPrettyChars()); |
173
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770 assert(cd->ir.irStruct->classInfo); |
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771 classInits.push_back(cd->ir.irStruct->classInfo); |
116
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772 } |
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773 // has class array? |
133
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774 if (!classInits.empty()) |
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775 { |
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776 const llvm::ArrayType* classArrTy = llvm::ArrayType::get(getPtrToType(classinfoTy), classInits.size()); |
116
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777 c = llvm::ConstantArray::get(classArrTy, classInits); |
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778 std::string m_name("_D"); |
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779 m_name.append(mangle()); |
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780 m_name.append("9__classesZ"); |
184 | 781 assert(gIR->module->getGlobalVariable(m_name) == NULL); |
116
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782 llvm::GlobalVariable* m_gvar = new llvm::GlobalVariable(classArrTy, true, llvm::GlobalValue::InternalLinkage, c, m_name, gIR->module); |
133
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783 c = llvm::ConstantExpr::getBitCast(m_gvar, getPtrToType(classArrTy->getElementType())); |
116
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784 c = DtoConstSlice(DtoConstSize_t(classInits.size()), c); |
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785 } |
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786 else |
173
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787 c = moduleinfo->ir.irStruct->constInit->getOperand(4); |
116
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788 initVec.push_back(c); |
89 | 789 |
116
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790 // flags |
132 | 791 c = DtoConstUint(0); |
792 if (!needmoduleinfo) | |
116
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793 c = DtoConstUint(4); // flags (4 means MIstandalone) |
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794 initVec.push_back(c); |
89 | 795 |
116
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796 // ctor |
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797 llvm::Function* fctor = build_module_ctor(); |
173
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798 c = fctor ? fctor : moduleinfo->ir.irStruct->constInit->getOperand(6); |
116
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799 initVec.push_back(c); |
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800 |
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801 // dtor |
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802 llvm::Function* fdtor = build_module_dtor(); |
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803 c = fdtor ? fdtor : moduleinfo->ir.irStruct->constInit->getOperand(7); |
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804 initVec.push_back(c); |
89 | 805 |
116
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806 // unitTest |
121
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807 llvm::Function* unittest = build_module_unittest(); |
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808 c = unittest ? unittest : moduleinfo->ir.irStruct->constInit->getOperand(8); |
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809 initVec.push_back(c); |
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810 |
132 | 811 // xgetMembers |
173
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812 c = moduleinfo->ir.irStruct->constInit->getOperand(9); |
132 | 813 initVec.push_back(c); |
814 | |
815 // ictor | |
173
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816 c = moduleinfo->ir.irStruct->constInit->getOperand(10); |
132 | 817 initVec.push_back(c); |
818 | |
819 /*Logger::println("MODULE INFO INITIALIZERS"); | |
820 for (size_t i=0; i<initVec.size(); ++i) | |
821 { | |
822 Logger::cout() << *initVec[i] << '\n'; | |
823 if (initVec[i]->getType() != moduleinfoTy->getElementType(i)) | |
824 assert(0); | |
825 }*/ | |
826 | |
116
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827 // create initializer |
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828 LLConstant* constMI = llvm::ConstantStruct::get(moduleinfoTy, initVec); |
89 | 829 |
116
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830 // create name |
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831 std::string MIname("_D"); |
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832 MIname.append(mangle()); |
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833 MIname.append("8__ModuleZ"); |
89 | 834 |
116
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835 // declare |
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836 // flags will be modified at runtime so can't make it constant |
184 | 837 |
838 llvm::GlobalVariable* gvar = gIR->module->getGlobalVariable(MIname); | |
839 if (!gvar) gvar = new llvm::GlobalVariable(moduleinfoTy, false, llvm::GlobalValue::ExternalLinkage, NULL, MIname, gIR->module); | |
840 gvar->setInitializer(constMI); | |
117 | 841 |
323
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842 // build the modulereference and ctor for registering it |
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843 LLFunction* mictor = build_module_reference_and_ctor(gvar); |
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844 |
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845 // register this ctor in the magic llvm.global_ctors appending array |
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846 const LLFunctionType* magicfty = LLFunctionType::get(LLType::VoidTy, std::vector<const LLType*>(), false); |
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847 std::vector<const LLType*> magictypes; |
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848 magictypes.push_back(LLType::Int32Ty); |
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849 magictypes.push_back(getPtrToType(magicfty)); |
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850 const LLStructType* magicsty = LLStructType::get(magictypes); |
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851 |
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852 // make the constant element |
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853 std::vector<LLConstant*> magicconstants; |
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854 magicconstants.push_back(DtoConstUint(65535)); |
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855 magicconstants.push_back(mictor); |
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856 LLConstant* magicinit = LLConstantStruct::get(magicsty, magicconstants); |
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857 |
117 | 858 // declare the appending array |
323
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859 const llvm::ArrayType* appendArrTy = llvm::ArrayType::get(magicsty, 1); |
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860 std::vector<LLConstant*> appendInits(1, magicinit); |
213
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861 LLConstant* appendInit = llvm::ConstantArray::get(appendArrTy, appendInits); |
323
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862 std::string appendName("llvm.global_ctors"); |
117 | 863 llvm::GlobalVariable* appendVar = new llvm::GlobalVariable(appendArrTy, true, llvm::GlobalValue::AppendingLinkage, appendInit, appendName, gIR->module); |
1 | 864 } |
865 | |
866 /* ================================================================== */ | |
867 | |
336 | 868 void Dsymbol::toObjFile(int multiobj) |
1 | 869 { |
38
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870 Logger::println("Ignoring Dsymbol::toObjFile for %s", toChars()); |
1 | 871 } |
872 | |
873 /* ================================================================== */ | |
874 | |
875 void Declaration::toObjFile() | |
876 { | |
38
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877 Logger::println("Ignoring Declaration::toObjFile for %s", toChars()); |
1 | 878 } |
879 | |
880 /* ================================================================== */ | |
881 | |
336 | 882 void InterfaceDeclaration::toObjFile(int multiobj) |
1 | 883 { |
133
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884 //Logger::println("Ignoring InterfaceDeclaration::toObjFile for %s", toChars()); |
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885 gIR->resolveList.push_back(this); |
1 | 886 } |
887 | |
888 /* ================================================================== */ | |
889 | |
336 | 890 void StructDeclaration::toObjFile(int multiobj) |
1 | 891 { |
102
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892 gIR->resolveList.push_back(this); |
1 | 893 } |
894 | |
895 /* ================================================================== */ | |
896 | |
336 | 897 void ClassDeclaration::toObjFile(int multiobj) |
1 | 898 { |
102
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899 gIR->resolveList.push_back(this); |
1 | 900 } |
901 | |
902 /****************************************** | |
903 * Get offset of base class's vtbl[] initializer from start of csym. | |
904 * Returns ~0 if not this csym. | |
905 */ | |
906 | |
907 unsigned ClassDeclaration::baseVtblOffset(BaseClass *bc) | |
908 { | |
909 return ~0; | |
910 } | |
911 | |
912 /* ================================================================== */ | |
913 | |
336 | 914 void VarDeclaration::toObjFile(int multiobj) |
1 | 915 { |
40 | 916 Logger::print("VarDeclaration::toObjFile(): %s | %s\n", toChars(), type->toChars()); |
1 | 917 LOG_SCOPE; |
918 | |
85
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919 if (aliassym) |
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920 { |
88
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921 Logger::println("alias sym"); |
336 | 922 toAlias()->toObjFile(multiobj); |
85
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923 return; |
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924 } |
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925 |
1 | 926 // global variable or magic |
85
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927 if (isDataseg()) |
1 | 928 { |
511
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929 Logger::println("data segment"); |
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930 |
132 | 931 // don't duplicate work |
173
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932 if (this->ir.resolved) return; |
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933 this->ir.resolved = true; |
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934 this->ir.declared = true; |
40 | 935 |
173
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936 this->ir.irGlobal = new IrGlobal(this); |
100 | 937 |
938 Logger::println("parent: %s (%s)", parent->toChars(), parent->kind()); | |
939 | |
149
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940 // handle static local variables |
100 | 941 bool static_local = false; |
149
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942 bool _isconst = isConst(); |
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943 if (parent && parent->isFuncDeclaration()) |
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944 { |
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945 static_local = true; |
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946 if (init && init->isExpInitializer()) { |
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947 _isconst = false; |
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948 } |
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949 } |
149
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950 |
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951 Logger::println("Creating global variable"); |
26
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952 |
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953 const LLType* _type = this->ir.irGlobal->type.get(); |
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954 llvm::GlobalValue::LinkageTypes _linkage = DtoLinkage(this); |
21
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955 std::string _name(mangle()); |
52 | 956 |
100 | 957 llvm::GlobalVariable* gvar = new llvm::GlobalVariable(_type,_isconst,_linkage,NULL,_name,gIR->module); |
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958 this->ir.irGlobal->value = gvar; |
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959 |
622
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960 if (Logger::enabled()) |
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961 Logger::cout() << *gvar << '\n'; |
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962 |
100 | 963 if (static_local) |
964 DtoConstInitGlobal(this); | |
965 else | |
102
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966 gIR->constInitList.push_back(this); |
1 | 967 } |
968 | |
969 // inside aggregate declaration. declare a field. | |
970 else | |
971 { | |
972 Logger::println("Aggregate var declaration: '%s' offset=%d", toChars(), offset); | |
973 | |
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974 const LLType* _type = DtoType(type); |
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975 this->ir.irField = new IrField(this); |
73 | 976 |
977 // add the field in the IRStruct | |
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978 gIR->topstruct()->offsets.insert(std::make_pair(offset, IrStruct::Offset(this, _type))); |
1 | 979 } |
980 | |
981 Logger::println("VarDeclaration::toObjFile is done"); | |
982 } | |
983 | |
984 /* ================================================================== */ | |
985 | |
336 | 986 void TypedefDeclaration::toObjFile(int multiobj) |
1 | 987 { |
988 static int tdi = 0; | |
989 Logger::print("TypedefDeclaration::toObjFile(%d): %s\n", tdi++, toChars()); | |
990 LOG_SCOPE; | |
991 | |
52 | 992 // generate typeinfo |
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993 DtoTypeInfoOf(type, false); |
1 | 994 } |
995 | |
996 /* ================================================================== */ | |
997 | |
336 | 998 void EnumDeclaration::toObjFile(int multiobj) |
1 | 999 { |
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1000 Logger::println("Ignoring EnumDeclaration::toObjFile for %s", toChars()); |
1 | 1001 } |
1002 | |
1003 /* ================================================================== */ | |
1004 | |
336 | 1005 void FuncDeclaration::toObjFile(int multiobj) |
1 | 1006 { |
102
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1007 gIR->resolveList.push_back(this); |
1 | 1008 } |