LLVMTargetMachine.cpp revision 3813d8adf3788dd01a4cb9db01c122cd5e6a13b9
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")); 41516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilsonstatic cl::opt<bool> DisableEarlyTailDup("disable-early-taildup", cl::Hidden, 42516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilson cl::desc("Disable pre-register allocation tail duplication")); 43522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCodePlace("disable-code-place", cl::Hidden, 44522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable code placement")); 45522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableSSC("disable-ssc", cl::Hidden, 46522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Stack Slot Coloring")); 47522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineLICM("disable-machine-licm", cl::Hidden, 48522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine LICM")); 49522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineSink("disable-machine-sink", cl::Hidden, 50522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine Sinking")); 51522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableLSR("disable-lsr", cl::Hidden, 52522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Loop Strength Reduction Pass")); 53522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCGP("disable-cgp", cl::Hidden, 54522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Codegen Prepare")); 5585ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintLSR("print-lsr-output", cl::Hidden, 5685ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR produced by the loop-reduce pass")); 5785ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintISelInput("print-isel-input", cl::Hidden, 5885ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR input to isel pass")); 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 657da9ecf9677b751d81515f95168ae3cb2df54160Evan Cheng 66dc756858f92a397ed30362ba8251fec56479735fDan Gohman// Enable or disable FastISel. Both options are needed, because 67dc756858f92a397ed30362ba8251fec56479735fDan Gohman// FastISel is enabled by default with -fast, and we wish to be 68e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman// able to enable or disable fast-isel independently from -O0. 69eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohmanstatic cl::opt<cl::boolOrDefault> 70dc756858f92a397ed30362ba8251fec56479735fDan GohmanEnableFastISelOption("fast-isel", cl::Hidden, 71e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman cl::desc("Enable the \"fast\" instruction selector")); 722c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 732e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman// Enable or disable an experimental optimization to split GEPs 742e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman// and run a special GVN pass which does not examine loads, in 752e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman// an effort to factor out redundancy implicit in complex GEPs. 762e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohmanstatic cl::opt<bool> EnableSplitGEPGVN("split-gep-gvn", cl::Hidden, 772e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman cl::desc("Split GEPs and run no-load GVN")); 78a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 79a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris LattnerLLVMTargetMachine::LLVMTargetMachine(const Target &T, 80a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner const std::string &TargetTriple) 81a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner : TargetMachine(T) { 82a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner AsmInfo = T.createAsmInfo(TargetTriple); 83a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner} 84a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 85f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// Set the default code model for the JIT for a generic target. 86f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// FIXME: Is small right here? or .is64Bit() ? Large : Small? 87f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christophervoid 88f4f43cb5011611d44219ffb1caa988f5adf305bfEric ChristopherLLVMTargetMachine::setCodeModelForJIT() { 89f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModel(CodeModel::Small); 90f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher} 91a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 92f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// Set the default code model for static compilation for a generic target. 93f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christophervoid 94f4f43cb5011611d44219ffb1caa988f5adf305bfEric ChristopherLLVMTargetMachine::setCodeModelForStatic() { 95f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModel(CodeModel::Small); 96f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher} 97a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 98211edae4843f5c2ee9c376e88e4cf0ecc8745f03Chris LattnerTargetMachine::CodeGenFileType 99bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan GohmanLLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, 10071847813bc419f7a0667468136a07429c6d9f164David Greene formatted_raw_ostream &Out, 10104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling CodeGenFileType FileType, 10298a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 10302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Add common CodeGen passes. 104be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addCommonCodeGenPasses(PM, OptLevel)) 105211edae4843f5c2ee9c376e88e4cf0ecc8745f03Chris Lattner return CGFT_ErrorOccurred; 10604523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 10747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner switch (FileType) { 10804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling default: 109211edae4843f5c2ee9c376e88e4cf0ecc8745f03Chris Lattner case CGFT_ObjectFile: 110211edae4843f5c2ee9c376e88e4cf0ecc8745f03Chris Lattner return CGFT_ErrorOccurred; 111211edae4843f5c2ee9c376e88e4cf0ecc8745f03Chris Lattner case CGFT_AssemblyFile: { 1120823d2a654cb3a075016f6efd21359ed4f5aca21Chris Lattner FunctionPass *Printer = 1130823d2a654cb3a075016f6efd21359ed4f5aca21Chris Lattner getTarget().createAsmPrinter(Out, *this, getMCAsmInfo(), 1140823d2a654cb3a075016f6efd21359ed4f5aca21Chris Lattner getAsmVerbosityDefault()); 115211edae4843f5c2ee9c376e88e4cf0ecc8745f03Chris Lattner if (Printer == 0) return CGFT_ErrorOccurred; 1160823d2a654cb3a075016f6efd21359ed4f5aca21Chris Lattner PM.add(Printer); 117b5c5160a554cb0debeb7913287d9c099a753a59eChris Lattner break; 1180823d2a654cb3a075016f6efd21359ed4f5aca21Chris Lattner } 11947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner } 120f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher 121f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 122f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForStatic(); 123ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes PM.add(createGCInfoDeleter()); 124211edae4843f5c2ee9c376e88e4cf0ecc8745f03Chris Lattner return FileType; 12502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman} 12602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 127a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// addPassesToEmitMachineCode - Add passes to the specified pass manager to 1283813d8adf3788dd01a4cb9db01c122cd5e6a13b9Chris Lattner/// get machine code emitted. This uses a JITCodeEmitter object to handle 129a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// actually outputting the machine code and resolving things like the address 130a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// of functions. This method should returns true if machine code emission is 131a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// not supported. 132a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// 133a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, 134a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes JITCodeEmitter &JCE, 135a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes CodeGenOpt::Level OptLevel) { 136f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 137f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForJIT(); 138f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher 139a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes // Add common CodeGen passes. 140a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (addCommonCodeGenPasses(PM, OptLevel)) 141a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return true; 142a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 143cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addCodeEmitter(PM, OptLevel, JCE); 144a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createGCInfoDeleter()); 145a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 146a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return false; // success! 147a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes} 148a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 14948872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic void printAndVerify(PassManagerBase &PM, 150499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman const char *Banner, 15148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen bool allowDoubleDefs = false) { 15248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (PrintMachineCode) 1532800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createMachineFunctionPrinterPass(dbgs(), Banner)); 15448872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 15548872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (VerifyMachineCode) 15648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen PM.add(createMachineVerifierPass(allowDoubleDefs)); 15748872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen} 15848872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 15998a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// addCommonCodeGenPasses - Add standard LLVM codegen passes used for both 16098a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// emitting to assembly files or machine code output. 16102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman/// 162be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendlingbool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, 16398a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 16447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Standard LLVM-Level Passes. 16502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 1662e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman // Optionally, tun split-GEPs and no-load GVN. 1672e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman if (EnableSplitGEPGVN) { 1682e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman PM.add(createGEPSplitterPass()); 1692e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman PM.add(createGVNPass(/*NoPRE=*/false, /*NoLoads=*/true)); 1702e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman } 1712e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman 17247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Run loop strength reduction before anything else. 173522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableLSR) { 174c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createLoopStrengthReducePass(getTargetLowering())); 175c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintLSR) 1762800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createPrintFunctionPass("\n\n*** Code after LSR ***\n", &dbgs())); 177c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner } 17802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 179b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // Turn exception handling constructs into something the code generators can 180b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // handle. 181af76e592c7f9deff0e55c13dbb4a34f07f1c7f64Chris Lattner switch (getMCAsmInfo()->getExceptionHandlingType()) 1821b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach { 1831b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::SjLj: 1848b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach // SjLj piggy-backs on dwarf for this bit. The cleanups done apply to both 18586e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // Dwarf EH prepare needs to be run after SjLj prepare. Otherwise, 18686e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // catch info can get misplaced when a selector ends up more than one block 18786e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // removed from the parent invoke(s). This could happen when a landing 18886e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // pad is shared by multiple invokes and is also a target of a normal 18986e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // edge from elsewhere. 1908b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach PM.add(createSjLjEHPass(getTargetLowering())); 1919f82da7cbfe0c9f1b2c4bc7d7a9a9b5d35bea488Jim Grosbach PM.add(createDwarfEHPass(getTargetLowering(), OptLevel==CodeGenOpt::None)); 1928b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach break; 1931b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::Dwarf: 1948bedf97f683bd5edb9308799a5e525de137d635cBill Wendling PM.add(createDwarfEHPass(getTargetLowering(), OptLevel==CodeGenOpt::None)); 1951b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 1961b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::None: 1971b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach PM.add(createLowerInvokePass(getTargetLowering())); 1981b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 1991b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach } 200b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands 201b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands PM.add(createGCLoweringPass()); 20202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 20347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Make sure that no unreachable blocks are instruction selected. 20447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createUnreachableBlockEliminationPass()); 20504523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 206522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCGP) 207c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createCodeGenPreparePass(getTargetLowering())); 208c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 209e9e6bdf27fca46dc9eca2ebdf73e03747d1859abBill Wendling PM.add(createStackProtectorPass(getTargetLowering())); 2102b58ce5ab4e22e796303d68fb246d4031cb5d4caBill Wendling 211c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintISelInput) 212f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar PM.add(createPrintFunctionPass("\n\n" 213f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar "*** Final LLVM Code input to ISel ***\n", 2142800eb1d30aea4177d6ea42adddd70e01ede8699David Greene &dbgs())); 215c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 21602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Standard Lower-Level Passes. 21702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 218ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman // Set up a MachineFunction for the rest of CodeGen to work on. 219ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman PM.add(new MachineFunctionAnalysis(*this, OptLevel)); 220ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman 221dc756858f92a397ed30362ba8251fec56479735fDan Gohman // Enable FastISel with -fast, but allow that to be overridden. 222eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohman if (EnableFastISelOption == cl::BOU_TRUE || 22398a366d547772010e94609e4584489b3e5ce0043Bill Wendling (OptLevel == CodeGenOpt::None && EnableFastISelOption != cl::BOU_FALSE)) 224dc756858f92a397ed30362ba8251fec56479735fDan Gohman EnableFastISel = true; 225dc756858f92a397ed30362ba8251fec56479735fDan Gohman 22647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Ask the target for an isel. 227be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addInstSelector(PM, OptLevel)) 22847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return true; 22904523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 23047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Print the instruction selected machine code... 231499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After Instruction Selection", 232499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman /* allowDoubleDefs= */ true); 2330f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 23498a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) { 23581d22d87de93f501f90f55b6bbc63f5dd286797aEvan Cheng PM.add(createOptimizeExtsPass()); 236522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineLICM) 237522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineLICMPass()); 238522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineSink) 239522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineSinkingPass()); 240499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After MachineLICM and MachineSinking", 241499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman /* allowDoubleDefs= */ true); 2428f0d99e463a2dcb5a40d14f0481a0e322bcf79e4Evan Cheng } 2430f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 24479fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng // Pre-ra tail duplication. 245516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilson if (OptLevel != CodeGenOpt::None && !DisableEarlyTailDup) { 24679fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng PM.add(createTailDuplicatePass(true)); 247541e9ae3ad39f6ebca7649ce0c640ff2c64bfb84Jakob Stoklund Olesen printAndVerify(PM, "After Pre-RegAlloc TailDuplicate", 248541e9ae3ad39f6ebca7649ce0c640ff2c64bfb84Jakob Stoklund Olesen /* allowDoubleDefs= */ true); 24979fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng } 25079fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng 251b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov // Run pre-ra passes. 25248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPreRegAlloc(PM, OptLevel)) 253499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PreRegAlloc passes", 254499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman /* allowDoubleDefs= */ true); 255b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov 2563f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform register allocation. 25747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createRegisterAllocator()); 258499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After Register Allocation"); 2593f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 2603f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform stack slot coloring. 261522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableSSC) { 2626248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // FIXME: Re-enable coloring with register when it's capable of adding 2636248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // kill markers. 2646248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng PM.add(createStackSlotColoringPass(false)); 265499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After StackSlotColoring"); 266499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 26702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 2683f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Run post-ra passes. 26948872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPostRegAlloc(PM, OptLevel)) 270499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRegAlloc passes"); 27102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 272ada779fb11eb411536aa8219a176ca0ce4d58fd1Christopher Lamb PM.add(createLowerSubregsPass()); 273499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After LowerSubregs"); 27404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 27547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Insert prolog/epilog code. Eliminate abstract frame index references... 27647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createPrologEpilogCodeInserter()); 277499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PrologEpilogCodeInserter"); 27802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 279629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng // Run pre-sched2 passes. 280629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng if (addPreSched2(PM, OptLevel)) 281499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PreSched2 passes"); 282629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng 283e7e7d0d7e39d0c7c659d26b97e8081fce0fcd749Dale Johannesen // Second pass scheduler. 284522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisablePostRA) { 285fa16354e0370fe884830286923352268b036737dEvan Cheng PM.add(createPostRAScheduler(OptLevel)); 286499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRAScheduler"); 2875ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman } 2885ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman 28923b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman // Branch folding must be run after regalloc and prolog/epilog insertion. 290522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableBranchFold) { 291a597103c328e29fb763e7a4864bd7c29a588fc9dBob Wilson PM.add(createBranchFoldingPass(getEnableTailMergeDefault())); 292499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After BranchFolding"); 29348872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen } 29423b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman 29515acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson // Tail duplication. 29615acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson if (OptLevel != CodeGenOpt::None && !DisableTailDuplicate) { 29779fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng PM.add(createTailDuplicatePass(false)); 2982d521e51acd5f1a0100cbbe4c611a35c978c2456Bob Wilson printAndVerify(PM, "After TailDuplicate"); 29915acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson } 30015acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson 30193f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen PM.add(createGCMachineCodeAnalysisPass()); 30202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 30393f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen if (PrintGCInfo) 3042800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createGCInfoPrinter(dbgs())); 30504523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 306522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCodePlace) { 307499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman PM.add(createCodePlacementOptPass()); 308499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After CodePlacementOpt"); 309499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 310499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman 311517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng if (addPreEmitPass(PM, OptLevel)) 312517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng printAndVerify(PM, "After PreEmit passes"); 313517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng 31402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; 31547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 316