LLVMTargetMachine.cpp revision 2800eb1d30aea4177d6ea42adddd70e01ede8699
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" 18789457847002f5289dbbc5cfce9d68c72e00bed1Daniel Dunbar#include "llvm/CodeGen/AsmPrinter.h" 1947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/CodeGen/Passes.h" 205a29c9eed157af51a8d338b5a225b146881819e8Gordon Henriksen#include "llvm/CodeGen/GCStrategy.h" 21ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman#include "llvm/CodeGen/MachineFunctionAnalysis.h" 2247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Target/TargetOptions.h" 23af76e592c7f9deff0e55c13dbb4a34f07f1c7f64Chris Lattner#include "llvm/MC/MCAsmInfo.h" 246d823cd39d8d16571682cd1bb4cbf2ecb4815d8eDaniel Dunbar#include "llvm/Target/TargetRegistry.h" 2547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Transforms/Scalar.h" 2631442f9dc5512b6a29cdb332b12ae09a1c9e8176Chris Lattner#include "llvm/Support/CommandLine.h" 272800eb1d30aea4177d6ea42adddd70e01ede8699David Greene#include "llvm/Support/Debug.h" 2871847813bc419f7a0667468136a07429c6d9f164David Greene#include "llvm/Support/FormattedStream.h" 2947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattnerusing namespace llvm; 3047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner 312c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohmannamespace llvm { 322c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman bool EnableFastISel; 332c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman} 342c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 35522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisablePostRA("disable-post-ra", cl::Hidden, 36522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Post Regalloc")); 37522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableBranchFold("disable-branch-fold", cl::Hidden, 38522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable branch folding")); 3915acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilsonstatic cl::opt<bool> DisableTailDuplicate("disable-tail-duplicate", cl::Hidden, 4015acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson cl::desc("Disable tail duplication")); 41522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCodePlace("disable-code-place", cl::Hidden, 42522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable code placement")); 43522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableSSC("disable-ssc", cl::Hidden, 44522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Stack Slot Coloring")); 45522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineLICM("disable-machine-licm", cl::Hidden, 46522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine LICM")); 47522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineSink("disable-machine-sink", cl::Hidden, 48522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine Sinking")); 49522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableLSR("disable-lsr", cl::Hidden, 50522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Loop Strength Reduction Pass")); 51522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCGP("disable-cgp", cl::Hidden, 52522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Codegen Prepare")); 5385ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintLSR("print-lsr-output", cl::Hidden, 5485ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR produced by the loop-reduce pass")); 5585ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintISelInput("print-isel-input", cl::Hidden, 5685ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR input to isel pass")); 578bd6035750f1b290832a3b1c90766d9b45ed8d6bEvan Chengstatic cl::opt<bool> PrintEmittedAsm("print-emitted-asm", cl::Hidden, 588bd6035750f1b290832a3b1c90766d9b45ed8d6bEvan Cheng cl::desc("Dump emitter generated instructions as assembly")); 5993f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksenstatic cl::opt<bool> PrintGCInfo("print-gc", cl::Hidden, 6093f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen cl::desc("Dump garbage collector data")); 6148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic cl::opt<bool> VerifyMachineCode("verify-machineinstrs", cl::Hidden, 6248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::desc("Verify generated machine code"), 6348872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::init(getenv("LLVM_VERIFY_MACHINEINSTRS")!=NULL)); 6485ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner 65dc756858f92a397ed30362ba8251fec56479735fDan Gohman// Enable or disable FastISel. Both options are needed, because 66dc756858f92a397ed30362ba8251fec56479735fDan Gohman// FastISel is enabled by default with -fast, and we wish to be 67e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman// able to enable or disable fast-isel independently from -O0. 68eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohmanstatic cl::opt<cl::boolOrDefault> 69dc756858f92a397ed30362ba8251fec56479735fDan GohmanEnableFastISelOption("fast-isel", cl::Hidden, 70e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman cl::desc("Enable the \"fast\" instruction selector")); 712c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 722e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman// Enable or disable an experimental optimization to split GEPs 732e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman// and run a special GVN pass which does not examine loads, in 742e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman// an effort to factor out redundancy implicit in complex GEPs. 752e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohmanstatic cl::opt<bool> EnableSplitGEPGVN("split-gep-gvn", cl::Hidden, 762e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman cl::desc("Split GEPs and run no-load GVN")); 77a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 7879fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Chengstatic cl::opt<bool> PreAllocTailDup("pre-regalloc-taildup", cl::Hidden, 7979fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng cl::desc("Pre-register allocation tail duplication")); 8079fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng 81a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris LattnerLLVMTargetMachine::LLVMTargetMachine(const Target &T, 82a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner const std::string &TargetTriple) 83a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner : TargetMachine(T) { 84a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner AsmInfo = T.createAsmInfo(TargetTriple); 85a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner} 86a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 87f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// Set the default code model for the JIT for a generic target. 88f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// FIXME: Is small right here? or .is64Bit() ? Large : Small? 89f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christophervoid 90f4f43cb5011611d44219ffb1caa988f5adf305bfEric ChristopherLLVMTargetMachine::setCodeModelForJIT() { 91f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModel(CodeModel::Small); 92f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher} 93a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 94f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// Set the default code model for static compilation for a generic target. 95f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christophervoid 96f4f43cb5011611d44219ffb1caa988f5adf305bfEric ChristopherLLVMTargetMachine::setCodeModelForStatic() { 97f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModel(CodeModel::Small); 98f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher} 99a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 10004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill WendlingFileModel::Model 101bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan GohmanLLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, 10271847813bc419f7a0667468136a07429c6d9f164David Greene formatted_raw_ostream &Out, 10304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling CodeGenFileType FileType, 10498a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 10502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Add common CodeGen passes. 106be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addCommonCodeGenPasses(PM, OptLevel)) 10704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::Error; 10804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 10947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner switch (FileType) { 11004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling default: 11104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling break; 11204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling case TargetMachine::AssemblyFile: 113be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addAssemblyEmitter(PM, OptLevel, getAsmVerbosityDefault(), Out)) 11404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::Error; 11504523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::AsmFile; 11604523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling case TargetMachine::ObjectFile: 11704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling if (getMachOWriterInfo()) 11804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::MachOFile; 11904523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling else if (getELFWriterInfo()) 12004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::ElfFile; 12147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner } 12204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 12304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::Error; 12404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling} 12502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 1265d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbarbool LLVMTargetMachine::addAssemblyEmitter(PassManagerBase &PM, 1275d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar CodeGenOpt::Level OptLevel, 1285d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar bool Verbose, 1295d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar formatted_raw_ostream &Out) { 13067d894ea64bc52245abf3f2ba89122a749d99c53Daniel Dunbar FunctionPass *Printer = 131af76e592c7f9deff0e55c13dbb4a34f07f1c7f64Chris Lattner getTarget().createAsmPrinter(Out, *this, getMCAsmInfo(), Verbose); 1325d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar if (!Printer) 13336129dba4f4134bc9cc83e3ea830e215754b1bafDaniel Dunbar return true; 13436129dba4f4134bc9cc83e3ea830e215754b1bafDaniel Dunbar 1355d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar PM.add(Printer); 1365d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar return false; 1375d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar} 1385d77cad60bd82dfa2d00f78e26443d667922efbfDaniel Dunbar 13904523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling/// addPassesToEmitFileFinish - If the passes to emit the specified file had to 14004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling/// be split up (e.g., to add an object writer pass), this method can be used to 14104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling/// finish up adding passes to emit the file, if necessary. 142bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan Gohmanbool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM, 14304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling MachineCodeEmitter *MCE, 14498a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 145f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 146f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForStatic(); 147f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher 14804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling if (MCE) 149cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addSimpleCodeEmitter(PM, OptLevel, *MCE); 150cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 151cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 15202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 1535eca075b74d62c621b160aa216b4cd50829a2cc7Gordon Henriksen PM.add(createGCInfoDeleter()); 15404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 15547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return false; // success! 15647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 15747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner 158a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// addPassesToEmitFileFinish - If the passes to emit the specified file had to 159a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// be split up (e.g., to add an object writer pass), this method can be used to 160a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// finish up adding passes to emit the file, if necessary. 161a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM, 162a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes JITCodeEmitter *JCE, 163a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes CodeGenOpt::Level OptLevel) { 164f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 165f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForJIT(); 166f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher 167a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (JCE) 168cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addSimpleCodeEmitter(PM, OptLevel, *JCE); 169cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 170cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 171a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 172a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createGCInfoDeleter()); 173a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 174a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return false; // success! 175a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes} 176a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 177ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes/// addPassesToEmitFileFinish - If the passes to emit the specified file had to 178ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes/// be split up (e.g., to add an object writer pass), this method can be used to 179ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes/// finish up adding passes to emit the file, if necessary. 180ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM, 181ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes ObjectCodeEmitter *OCE, 182ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes CodeGenOpt::Level OptLevel) { 183f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 184f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForStatic(); 185f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher 186ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes if (OCE) 187cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addSimpleCodeEmitter(PM, OptLevel, *OCE); 188cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 189cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 190ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes 191ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes PM.add(createGCInfoDeleter()); 192ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes 193ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes return false; // success! 194ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes} 195ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes 19647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// addPassesToEmitMachineCode - Add passes to the specified pass manager to 19747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// get machine code emitted. This uses a MachineCodeEmitter object to handle 19847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// actually outputting the machine code and resolving things like the address 19947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// of functions. This method should returns true if machine code emission is 20047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// not supported. 20147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// 202bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan Gohmanbool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, 20347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner MachineCodeEmitter &MCE, 20498a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 205f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 206f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForJIT(); 207f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher 20802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Add common CodeGen passes. 209be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addCommonCodeGenPasses(PM, OptLevel)) 21002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return true; 21102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 212cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addCodeEmitter(PM, OptLevel, MCE); 213cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 214cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 21502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 21602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman PM.add(createGCInfoDeleter()); 21702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 21802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; // success! 21902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman} 22002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 221a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// addPassesToEmitMachineCode - Add passes to the specified pass manager to 222a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// get machine code emitted. This uses a MachineCodeEmitter object to handle 223a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// actually outputting the machine code and resolving things like the address 224a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// of functions. This method should returns true if machine code emission is 225a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// not supported. 226a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// 227a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, 228a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes JITCodeEmitter &JCE, 229a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes CodeGenOpt::Level OptLevel) { 230f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 231f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForJIT(); 232f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher 233a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes // Add common CodeGen passes. 234a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (addCommonCodeGenPasses(PM, OptLevel)) 235a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return true; 236a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 237cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addCodeEmitter(PM, OptLevel, JCE); 238cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar if (PrintEmittedAsm) 239cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addAssemblyEmitter(PM, OptLevel, true, ferrs()); 240a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 241a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createGCInfoDeleter()); 242a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 243a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return false; // success! 244a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes} 245a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 24648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic void printAndVerify(PassManagerBase &PM, 247499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman const char *Banner, 24848872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen bool allowDoubleDefs = false) { 24948872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (PrintMachineCode) 2502800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createMachineFunctionPrinterPass(dbgs(), Banner)); 25148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 25248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (VerifyMachineCode) 25348872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen PM.add(createMachineVerifierPass(allowDoubleDefs)); 25448872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen} 25548872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 25698a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// addCommonCodeGenPasses - Add standard LLVM codegen passes used for both 25798a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// emitting to assembly files or machine code output. 25802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman/// 259be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendlingbool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, 26098a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 26147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Standard LLVM-Level Passes. 26202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 2632e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman // Optionally, tun split-GEPs and no-load GVN. 2642e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman if (EnableSplitGEPGVN) { 2652e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman PM.add(createGEPSplitterPass()); 2662e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman PM.add(createGVNPass(/*NoPRE=*/false, /*NoLoads=*/true)); 2672e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman } 2682e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman 26947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Run loop strength reduction before anything else. 270522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableLSR) { 271c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createLoopStrengthReducePass(getTargetLowering())); 272c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintLSR) 2732800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createPrintFunctionPass("\n\n*** Code after LSR ***\n", &dbgs())); 274c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner } 27502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 276b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // Turn exception handling constructs into something the code generators can 277b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // handle. 278af76e592c7f9deff0e55c13dbb4a34f07f1c7f64Chris Lattner switch (getMCAsmInfo()->getExceptionHandlingType()) 2791b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach { 2801b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::SjLj: 2818b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach // SjLj piggy-backs on dwarf for this bit. The cleanups done apply to both 2828bedf97f683bd5edb9308799a5e525de137d635cBill Wendling PM.add(createDwarfEHPass(getTargetLowering(), OptLevel==CodeGenOpt::None)); 2838b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach PM.add(createSjLjEHPass(getTargetLowering())); 2848b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach break; 2851b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::Dwarf: 2868bedf97f683bd5edb9308799a5e525de137d635cBill Wendling PM.add(createDwarfEHPass(getTargetLowering(), OptLevel==CodeGenOpt::None)); 2871b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 2881b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::None: 2891b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach PM.add(createLowerInvokePass(getTargetLowering())); 2901b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 2911b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach } 292b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands 293b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands PM.add(createGCLoweringPass()); 29402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 29547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Make sure that no unreachable blocks are instruction selected. 29647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createUnreachableBlockEliminationPass()); 29704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 298522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCGP) 299c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createCodeGenPreparePass(getTargetLowering())); 300c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 301e9e6bdf27fca46dc9eca2ebdf73e03747d1859abBill Wendling PM.add(createStackProtectorPass(getTargetLowering())); 3022b58ce5ab4e22e796303d68fb246d4031cb5d4caBill Wendling 303c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintISelInput) 304f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar PM.add(createPrintFunctionPass("\n\n" 305f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar "*** Final LLVM Code input to ISel ***\n", 3062800eb1d30aea4177d6ea42adddd70e01ede8699David Greene &dbgs())); 307c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 30802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Standard Lower-Level Passes. 30902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 310ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman // Set up a MachineFunction for the rest of CodeGen to work on. 311ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman PM.add(new MachineFunctionAnalysis(*this, OptLevel)); 312ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman 313dc756858f92a397ed30362ba8251fec56479735fDan Gohman // Enable FastISel with -fast, but allow that to be overridden. 314eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohman if (EnableFastISelOption == cl::BOU_TRUE || 31598a366d547772010e94609e4584489b3e5ce0043Bill Wendling (OptLevel == CodeGenOpt::None && EnableFastISelOption != cl::BOU_FALSE)) 316dc756858f92a397ed30362ba8251fec56479735fDan Gohman EnableFastISel = true; 317dc756858f92a397ed30362ba8251fec56479735fDan Gohman 31847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Ask the target for an isel. 319be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addInstSelector(PM, OptLevel)) 32047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return true; 32104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 32247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Print the instruction selected machine code... 323499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After Instruction Selection", 324499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman /* allowDoubleDefs= */ true); 3250f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 32698a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) { 327522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineLICM) 328522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineLICMPass()); 329522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineSink) 330522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineSinkingPass()); 331499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After MachineLICM and MachineSinking", 332499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman /* allowDoubleDefs= */ true); 3338f0d99e463a2dcb5a40d14f0481a0e322bcf79e4Evan Cheng } 3340f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 33579fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng // Pre-ra tail duplication. 33679fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng if (OptLevel != CodeGenOpt::None && 33779fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng !DisableTailDuplicate && PreAllocTailDup) { 33879fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng PM.add(createTailDuplicatePass(true)); 33979fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng printAndVerify(PM, "After Pre-RegAlloc TailDuplicate"); 34079fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng } 34179fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng 342b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov // Run pre-ra passes. 34348872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPreRegAlloc(PM, OptLevel)) 344499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PreRegAlloc passes", 345499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman /* allowDoubleDefs= */ true); 346b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov 3473f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform register allocation. 34847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createRegisterAllocator()); 349499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After Register Allocation"); 3503f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 3513f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform stack slot coloring. 352522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableSSC) { 3536248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // FIXME: Re-enable coloring with register when it's capable of adding 3546248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // kill markers. 3556248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng PM.add(createStackSlotColoringPass(false)); 356499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After StackSlotColoring"); 357499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 35802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 3593f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Run post-ra passes. 36048872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPostRegAlloc(PM, OptLevel)) 361499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRegAlloc passes"); 36202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 363ada779fb11eb411536aa8219a176ca0ce4d58fd1Christopher Lamb PM.add(createLowerSubregsPass()); 364499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After LowerSubregs"); 36504523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 36647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Insert prolog/epilog code. Eliminate abstract frame index references... 36747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createPrologEpilogCodeInserter()); 368499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PrologEpilogCodeInserter"); 36902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 370629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng // Run pre-sched2 passes. 371629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng if (addPreSched2(PM, OptLevel)) 372499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PreSched2 passes"); 373629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng 374e7e7d0d7e39d0c7c659d26b97e8081fce0fcd749Dale Johannesen // Second pass scheduler. 375522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisablePostRA) { 376fa16354e0370fe884830286923352268b036737dEvan Cheng PM.add(createPostRAScheduler(OptLevel)); 377499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRAScheduler"); 3785ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman } 3795ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman 38023b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman // Branch folding must be run after regalloc and prolog/epilog insertion. 381522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableBranchFold) { 382a597103c328e29fb763e7a4864bd7c29a588fc9dBob Wilson PM.add(createBranchFoldingPass(getEnableTailMergeDefault())); 383499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After BranchFolding"); 38448872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen } 38523b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman 38615acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson // Tail duplication. 38715acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson if (OptLevel != CodeGenOpt::None && !DisableTailDuplicate) { 38879fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng PM.add(createTailDuplicatePass(false)); 3892d521e51acd5f1a0100cbbe4c611a35c978c2456Bob Wilson printAndVerify(PM, "After TailDuplicate"); 39015acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson } 39115acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson 39293f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen PM.add(createGCMachineCodeAnalysisPass()); 39302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 39493f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen if (PrintGCInfo) 3952800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createGCInfoPrinter(dbgs())); 39604523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 397522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCodePlace) { 398499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman PM.add(createCodePlacementOptPass()); 399499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After CodePlacementOpt"); 400499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 401499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman 402517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng if (addPreEmitPass(PM, OptLevel)) 403517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng printAndVerify(PM, "After PreEmit passes"); 404517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng 40502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; 40647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 407