LLVMTargetMachine.cpp revision 5d77cad60bd82dfa2d00f78e26443d667922efbf
147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner//===-- LLVMTargetMachine.cpp - Implement the LLVMTargetMachine class -----===// 247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner// 347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner// The LLVM Compiler Infrastructure 447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner// 847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner//===----------------------------------------------------------------------===// 947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner// 1047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner// This file implements the LLVMTargetMachine class. 1147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner// 1247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner//===----------------------------------------------------------------------===// 1347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner 1447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Target/TargetMachine.h" 1547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/PassManager.h" 1647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Pass.h" 1731442f9dc5512b6a29cdb332b12ae09a1c9e8176Chris Lattner#include "llvm/Assembly/PrintModulePass.h" 180f54dcbf07c69e41ecaa6b4fbf0d94956d8e9ff5Devang Patel#include "llvm/Analysis/LoopPass.h" 1947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/CodeGen/Passes.h" 205a29c9eed157af51a8d338b5a225b146881819e8Gordon Henriksen#include "llvm/CodeGen/GCStrategy.h" 2147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Target/TargetOptions.h" 221532f3ddd77c362dd5f613af06b4de636e3c5b0eDale Johannesen#include "llvm/Target/TargetAsmInfo.h" 2347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Transforms/Scalar.h" 2431442f9dc5512b6a29cdb332b12ae09a1c9e8176Chris Lattner#include "llvm/Support/CommandLine.h" 2571847813bc419f7a0667468136a07429c6d9f164David Greene#include "llvm/Support/FormattedStream.h" 2647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattnerusing namespace llvm; 2747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner 282c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohmannamespace llvm { 292c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman bool EnableFastISel; 302c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman} 312c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 3285ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintLSR("print-lsr-output", cl::Hidden, 3385ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR produced by the loop-reduce pass")); 3485ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintISelInput("print-isel-input", cl::Hidden, 3585ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR input to isel pass")); 368bd6035750f1b290832a3b1c90766d9b45ed8d6bEvan Chengstatic cl::opt<bool> PrintEmittedAsm("print-emitted-asm", cl::Hidden, 378bd6035750f1b290832a3b1c90766d9b45ed8d6bEvan Cheng cl::desc("Dump emitter generated instructions as assembly")); 3893f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksenstatic cl::opt<bool> PrintGCInfo("print-gc", cl::Hidden, 3993f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen cl::desc("Dump garbage collector data")); 4048872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic cl::opt<bool> VerifyMachineCode("verify-machineinstrs", cl::Hidden, 4148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::desc("Verify generated machine code"), 4248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::init(getenv("LLVM_VERIFY_MACHINEINSTRS")!=NULL)); 4385ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner 44459525df1e003597077197b5f802bd5d9cd7d94cChris Lattner// When this works it will be on by default. 45459525df1e003597077197b5f802bd5d9cd7d94cChris Lattnerstatic cl::opt<bool> 46459525df1e003597077197b5f802bd5d9cd7d94cChris LattnerDisablePostRAScheduler("disable-post-RA-scheduler", 47459525df1e003597077197b5f802bd5d9cd7d94cChris Lattner cl::desc("Disable scheduling after register allocation"), 48459525df1e003597077197b5f802bd5d9cd7d94cChris Lattner cl::init(true)); 49459525df1e003597077197b5f802bd5d9cd7d94cChris Lattner 50dc756858f92a397ed30362ba8251fec56479735fDan Gohman// Enable or disable FastISel. Both options are needed, because 51dc756858f92a397ed30362ba8251fec56479735fDan Gohman// FastISel is enabled by default with -fast, and we wish to be 52dc756858f92a397ed30362ba8251fec56479735fDan Gohman// able to enable or disable fast-isel independently from -fast. 53eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohmanstatic cl::opt<cl::boolOrDefault> 54dc756858f92a397ed30362ba8251fec56479735fDan GohmanEnableFastISelOption("fast-isel", cl::Hidden, 55dc756858f92a397ed30362ba8251fec56479735fDan Gohman cl::desc("Enable the experimental \"fast\" instruction selector")); 562c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 5704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill WendlingFileModel::Model 58bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan GohmanLLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, 5971847813bc419f7a0667468136a07429c6d9f164David Greene formatted_raw_ostream &Out, 6004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling CodeGenFileType FileType, 6198a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 6202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Add common CodeGen passes. 63be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addCommonCodeGenPasses(PM, OptLevel)) 6404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::Error; 6504523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 669d4209fb82cab74bae76511e3f21ef1c24ec948aJim Laskey // Fold redundant debug labels. 679d4209fb82cab74bae76511e3f21ef1c24ec948aJim Laskey PM.add(createDebugLabelFoldingPass()); 6802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 6902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman if (PrintMachineCode) 7004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling PM.add(createMachineFunctionPrinterPass(cerr)); 7104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 72be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addPreEmitPass(PM, OptLevel) && PrintMachineCode) 7304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling PM.add(createMachineFunctionPrinterPass(cerr)); 7404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 7598a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) 76bbf1db72133e9cf986e4da6260736335533067dbEvan Cheng PM.add(createCodePlacementOptPass()); 77d703ed6aed98c8156829399efbafb13a3cca0b69Evan Cheng 7847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner switch (FileType) { 7904523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling default: 8004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling break; 8104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling case TargetMachine::AssemblyFile: 82be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addAssemblyEmitter(PM, OptLevel, getAsmVerbosityDefault(), Out)) 8304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::Error; 8404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::AsmFile; 8504523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling case TargetMachine::ObjectFile: 8604523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling if (getMachOWriterInfo()) 8704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::MachOFile; 8804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling else if (getELFWriterInfo()) 8904523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::ElfFile; 9047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner } 9104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 9204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::Error; 9304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling} 9402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 955d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbarbool LLVMTargetMachine::addAssemblyEmitter(PassManagerBase &PM, 965d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar CodeGenOpt::Level OptLevel, 975d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar bool Verbose, 985d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar formatted_raw_ostream &Out) { 995d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar FunctionPass *Printer = getTarget().createAsmPrinter(Out, *this, Verbose); 1005d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar if (!Printer) 1015d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar llvm_report_error("unable to create assembly printer"); 1025d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar PM.add(Printer); 1035d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar return false; 1045d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar} 1055d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar 10604523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling/// addPassesToEmitFileFinish - If the passes to emit the specified file had to 10704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling/// be split up (e.g., to add an object writer pass), this method can be used to 10804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling/// finish up adding passes to emit the file, if necessary. 109bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan Gohmanbool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM, 11004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling MachineCodeEmitter *MCE, 11198a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 11204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling if (MCE) 113cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addSimpleCodeEmitter(PM, OptLevel, *MCE); 114cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 115cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 11602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 1175eca075b74d62c621b160aa216b4cd50829a2cc7Gordon Henriksen PM.add(createGCInfoDeleter()); 11804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 11947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Delete machine code for this function 12047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createMachineCodeDeleter()); 12104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 12247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return false; // success! 12347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 12447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner 125a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// addPassesToEmitFileFinish - If the passes to emit the specified file had to 126a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// be split up (e.g., to add an object writer pass), this method can be used to 127a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// finish up adding passes to emit the file, if necessary. 128a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM, 129a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes JITCodeEmitter *JCE, 130a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes CodeGenOpt::Level OptLevel) { 131a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (JCE) 132cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addSimpleCodeEmitter(PM, OptLevel, *JCE); 133cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 134cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 135a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 136a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createGCInfoDeleter()); 137a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 138a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes // Delete machine code for this function 139a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createMachineCodeDeleter()); 140a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 141a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return false; // success! 142a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes} 143a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 144ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes/// addPassesToEmitFileFinish - If the passes to emit the specified file had to 145ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes/// be split up (e.g., to add an object writer pass), this method can be used to 146ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes/// finish up adding passes to emit the file, if necessary. 147ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM, 148ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes ObjectCodeEmitter *OCE, 149ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes CodeGenOpt::Level OptLevel) { 150ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes if (OCE) 151cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addSimpleCodeEmitter(PM, OptLevel, *OCE); 152cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 153cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 154ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes 155ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes PM.add(createGCInfoDeleter()); 156ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes 157ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes // Delete machine code for this function 158ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes PM.add(createMachineCodeDeleter()); 159ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes 160ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes return false; // success! 161ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes} 162ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes 16347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// addPassesToEmitMachineCode - Add passes to the specified pass manager to 16447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// get machine code emitted. This uses a MachineCodeEmitter object to handle 16547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// actually outputting the machine code and resolving things like the address 16647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// of functions. This method should returns true if machine code emission is 16747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// not supported. 16847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// 169bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan Gohmanbool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, 17047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner MachineCodeEmitter &MCE, 17198a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 17202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Add common CodeGen passes. 173be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addCommonCodeGenPasses(PM, OptLevel)) 17402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return true; 17502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 176be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addPreEmitPass(PM, OptLevel) && PrintMachineCode) 17702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman PM.add(createMachineFunctionPrinterPass(cerr)); 17802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 179cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addCodeEmitter(PM, OptLevel, MCE); 180cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 181cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 18202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 18302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman PM.add(createGCInfoDeleter()); 18402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 18502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Delete machine code for this function 18602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman PM.add(createMachineCodeDeleter()); 18702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 18802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; // success! 18902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman} 19002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 191a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// addPassesToEmitMachineCode - Add passes to the specified pass manager to 192a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// get machine code emitted. This uses a MachineCodeEmitter object to handle 193a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// actually outputting the machine code and resolving things like the address 194a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// of functions. This method should returns true if machine code emission is 195a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// not supported. 196a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// 197a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, 198a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes JITCodeEmitter &JCE, 199a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes CodeGenOpt::Level OptLevel) { 200a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes // Add common CodeGen passes. 201a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (addCommonCodeGenPasses(PM, OptLevel)) 202a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return true; 203a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 204a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (addPreEmitPass(PM, OptLevel) && PrintMachineCode) 205a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createMachineFunctionPrinterPass(cerr)); 206a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 207cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addCodeEmitter(PM, OptLevel, JCE); 208cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 209cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 210a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 211a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createGCInfoDeleter()); 212a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 213a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes // Delete machine code for this function 214a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createMachineCodeDeleter()); 215a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 216a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return false; // success! 217a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes} 218a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 21948872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic void printAndVerify(PassManagerBase &PM, 22048872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen bool allowDoubleDefs = false) { 22148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (PrintMachineCode) 22248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen PM.add(createMachineFunctionPrinterPass(cerr)); 22348872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 22448872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (VerifyMachineCode) 22548872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen PM.add(createMachineVerifierPass(allowDoubleDefs)); 22648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen} 22748872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 22898a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// addCommonCodeGenPasses - Add standard LLVM codegen passes used for both 22998a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// emitting to assembly files or machine code output. 23002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman/// 231be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendlingbool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, 23298a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 23347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Standard LLVM-Level Passes. 23402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 23547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Run loop strength reduction before anything else. 23698a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) { 237c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createLoopStrengthReducePass(getTargetLowering())); 238c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintLSR) 2393b0da26e202cbbeb22508231f4278bda8e995391Daniel Dunbar PM.add(createPrintFunctionPass("\n\n*** Code after LSR ***\n", &errs())); 240c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner } 24102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 242b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // Turn exception handling constructs into something the code generators can 243b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // handle. 2441532f3ddd77c362dd5f613af06b4de636e3c5b0eDale Johannesen if (!getTargetAsmInfo()->doesSupportExceptionHandling()) 245b6d5b1439047609c050576f3dc52b722e76bd30bDale Johannesen PM.add(createLowerInvokePass(getTargetLowering())); 246b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands else 247b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands PM.add(createDwarfEHPass(getTargetLowering(), OptLevel==CodeGenOpt::None)); 248b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands 249b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands PM.add(createGCLoweringPass()); 25002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 25147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Make sure that no unreachable blocks are instruction selected. 25247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createUnreachableBlockEliminationPass()); 25304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 25498a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) 255c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createCodeGenPreparePass(getTargetLowering())); 256c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 257e9e6bdf27fca46dc9eca2ebdf73e03747d1859abBill Wendling PM.add(createStackProtectorPass(getTargetLowering())); 2582b58ce5ab4e22e796303d68fb246d4031cb5d4caBill Wendling 259c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintISelInput) 260f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar PM.add(createPrintFunctionPass("\n\n" 261f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar "*** Final LLVM Code input to ISel ***\n", 2623b0da26e202cbbeb22508231f4278bda8e995391Daniel Dunbar &errs())); 263c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 26402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Standard Lower-Level Passes. 26502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 266dc756858f92a397ed30362ba8251fec56479735fDan Gohman // Enable FastISel with -fast, but allow that to be overridden. 267eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohman if (EnableFastISelOption == cl::BOU_TRUE || 26898a366d547772010e94609e4584489b3e5ce0043Bill Wendling (OptLevel == CodeGenOpt::None && EnableFastISelOption != cl::BOU_FALSE)) 269dc756858f92a397ed30362ba8251fec56479735fDan Gohman EnableFastISel = true; 270dc756858f92a397ed30362ba8251fec56479735fDan Gohman 27147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Ask the target for an isel. 272be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addInstSelector(PM, OptLevel)) 27347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return true; 27404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 27547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Print the instruction selected machine code... 27648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen printAndVerify(PM, /* allowDoubleDefs= */ true); 2770f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 27898a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) { 279cc8f603f531c906782e4966107ae29667eb6632cBill Wendling PM.add(createMachineLICMPass()); 2803c42f1211874665e8ea6eea55a45024b557afa61Chris Lattner PM.add(createMachineSinkingPass()); 2818799dbe5b7be2e959047caf88ce97a04a3526856Evan Cheng printAndVerify(PM, /* allowDoubleDefs= */ true); 2828f0d99e463a2dcb5a40d14f0481a0e322bcf79e4Evan Cheng } 2830f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 284b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov // Run pre-ra passes. 28548872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPreRegAlloc(PM, OptLevel)) 28648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen printAndVerify(PM); 287b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov 2883f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform register allocation. 28947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createRegisterAllocator()); 2903f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 2913f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform stack slot coloring. 29298a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) 2931ea7327845bcd0996425c9892730bf9b1f123f20Evan Cheng PM.add(createStackSlotColoringPass(OptLevel >= CodeGenOpt::Aggressive)); 2943f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 29548872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen printAndVerify(PM); // Print the register-allocated code 29602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 2973f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Run post-ra passes. 29848872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPostRegAlloc(PM, OptLevel)) 29948872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen printAndVerify(PM); 30002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 301ada779fb11eb411536aa8219a176ca0ce4d58fd1Christopher Lamb PM.add(createLowerSubregsPass()); 30248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen printAndVerify(PM); 30304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 30447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Insert prolog/epilog code. Eliminate abstract frame index references... 30547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createPrologEpilogCodeInserter()); 30648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen printAndVerify(PM); 30702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 308e7e7d0d7e39d0c7c659d26b97e8081fce0fcd749Dale Johannesen // Second pass scheduler. 30998a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None && !DisablePostRAScheduler) { 31072f159640382a16e036b63dcb9c0b427e6d5dc0aDale Johannesen PM.add(createPostRAScheduler()); 31148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen printAndVerify(PM); 3125ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman } 3135ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman 31423b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman // Branch folding must be run after regalloc and prolog/epilog insertion. 31548872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (OptLevel != CodeGenOpt::None) { 31623b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman PM.add(createBranchFoldingPass(getEnableTailMergeDefault())); 31748872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen printAndVerify(PM); 31848872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen } 31923b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman 32093f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen PM.add(createGCMachineCodeAnalysisPass()); 32148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen printAndVerify(PM); 32202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 32393f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen if (PrintGCInfo) 3245eca075b74d62c621b160aa216b4cd50829a2cc7Gordon Henriksen PM.add(createGCInfoPrinter(*cerr)); 32504523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 32602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; 32747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 328