LLVMTargetMachine.cpp revision bbf1db72133e9cf986e4da6260736335533067db
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" 25cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson#include "llvm/Support/raw_ostream.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")); 4085ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner 41459525df1e003597077197b5f802bd5d9cd7d94cChris Lattner// When this works it will be on by default. 42459525df1e003597077197b5f802bd5d9cd7d94cChris Lattnerstatic cl::opt<bool> 43459525df1e003597077197b5f802bd5d9cd7d94cChris LattnerDisablePostRAScheduler("disable-post-RA-scheduler", 44459525df1e003597077197b5f802bd5d9cd7d94cChris Lattner cl::desc("Disable scheduling after register allocation"), 45459525df1e003597077197b5f802bd5d9cd7d94cChris Lattner cl::init(true)); 46459525df1e003597077197b5f802bd5d9cd7d94cChris Lattner 47dc756858f92a397ed30362ba8251fec56479735fDan Gohman// Enable or disable FastISel. Both options are needed, because 48dc756858f92a397ed30362ba8251fec56479735fDan Gohman// FastISel is enabled by default with -fast, and we wish to be 49dc756858f92a397ed30362ba8251fec56479735fDan Gohman// able to enable or disable fast-isel independently from -fast. 50eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohmanstatic cl::opt<cl::boolOrDefault> 51dc756858f92a397ed30362ba8251fec56479735fDan GohmanEnableFastISelOption("fast-isel", cl::Hidden, 52dc756858f92a397ed30362ba8251fec56479735fDan Gohman cl::desc("Enable the experimental \"fast\" instruction selector")); 532c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 5404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill WendlingFileModel::Model 55bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan GohmanLLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, 56cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson raw_ostream &Out, 5704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling CodeGenFileType FileType, 5898a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 5902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Add common CodeGen passes. 60be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addCommonCodeGenPasses(PM, OptLevel)) 6104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::Error; 6204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 639d4209fb82cab74bae76511e3f21ef1c24ec948aJim Laskey // Fold redundant debug labels. 649d4209fb82cab74bae76511e3f21ef1c24ec948aJim Laskey PM.add(createDebugLabelFoldingPass()); 6502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 6602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman if (PrintMachineCode) 6704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling PM.add(createMachineFunctionPrinterPass(cerr)); 6804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 69be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addPreEmitPass(PM, OptLevel) && PrintMachineCode) 7004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling PM.add(createMachineFunctionPrinterPass(cerr)); 7104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 7298a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) 73bbf1db72133e9cf986e4da6260736335533067dbEvan Cheng PM.add(createCodePlacementOptPass()); 74d703ed6aed98c8156829399efbafb13a3cca0b69Evan Cheng 7547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner switch (FileType) { 7604523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling default: 7704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling break; 7804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling case TargetMachine::AssemblyFile: 79be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addAssemblyEmitter(PM, OptLevel, getAsmVerbosityDefault(), Out)) 8004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::Error; 8104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::AsmFile; 8204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling case TargetMachine::ObjectFile: 8304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling if (getMachOWriterInfo()) 8404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::MachOFile; 8504523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling else if (getELFWriterInfo()) 8604523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::ElfFile; 8747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner } 8804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 8904523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling return FileModel::Error; 9004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling} 9102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 9204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling/// addPassesToEmitFileFinish - If the passes to emit the specified file had to 9304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling/// be split up (e.g., to add an object writer pass), this method can be used to 9404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling/// finish up adding passes to emit the file, if necessary. 95bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan Gohmanbool LLVMTargetMachine::addPassesToEmitFileFinish(PassManagerBase &PM, 9604523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling MachineCodeEmitter *MCE, 9798a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 9804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling if (MCE) 99be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling addSimpleCodeEmitter(PM, OptLevel, PrintEmittedAsm, *MCE); 10002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 1015eca075b74d62c621b160aa216b4cd50829a2cc7Gordon Henriksen PM.add(createGCInfoDeleter()); 10204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 10347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Delete machine code for this function 10447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createMachineCodeDeleter()); 10504523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 10647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return false; // success! 10747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 10847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner 10947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// addPassesToEmitMachineCode - Add passes to the specified pass manager to 11047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// get machine code emitted. This uses a MachineCodeEmitter object to handle 11147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// actually outputting the machine code and resolving things like the address 11247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// of functions. This method should returns true if machine code emission is 11347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// not supported. 11447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner/// 115bfae83139dcb4fffd50b939e1b1224b0126f04d4Dan Gohmanbool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, 11647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner MachineCodeEmitter &MCE, 11798a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 11802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Add common CodeGen passes. 119be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addCommonCodeGenPasses(PM, OptLevel)) 12002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return true; 12102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 122be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addPreEmitPass(PM, OptLevel) && PrintMachineCode) 12302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman PM.add(createMachineFunctionPrinterPass(cerr)); 12402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 125be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling addCodeEmitter(PM, OptLevel, PrintEmittedAsm, MCE); 12602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 12702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman PM.add(createGCInfoDeleter()); 12802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 12902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Delete machine code for this function 13002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman PM.add(createMachineCodeDeleter()); 13102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 13202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; // success! 13302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman} 13402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 13598a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// addCommonCodeGenPasses - Add standard LLVM codegen passes used for both 13698a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// emitting to assembly files or machine code output. 13702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman/// 138be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendlingbool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, 13998a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 14047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Standard LLVM-Level Passes. 14102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 14247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Run loop strength reduction before anything else. 14398a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) { 144c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createLoopStrengthReducePass(getTargetLowering())); 145c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintLSR) 1463b0da26e202cbbeb22508231f4278bda8e995391Daniel Dunbar PM.add(createPrintFunctionPass("\n\n*** Code after LSR ***\n", &errs())); 147c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner } 14802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 14993f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen PM.add(createGCLoweringPass()); 15002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 1511532f3ddd77c362dd5f613af06b4de636e3c5b0eDale Johannesen if (!getTargetAsmInfo()->doesSupportExceptionHandling()) 152b6d5b1439047609c050576f3dc52b722e76bd30bDale Johannesen PM.add(createLowerInvokePass(getTargetLowering())); 15302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 15447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Make sure that no unreachable blocks are instruction selected. 15547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createUnreachableBlockEliminationPass()); 15604523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 15798a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) 158c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createCodeGenPreparePass(getTargetLowering())); 159c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 160e9e6bdf27fca46dc9eca2ebdf73e03747d1859abBill Wendling PM.add(createStackProtectorPass(getTargetLowering())); 1612b58ce5ab4e22e796303d68fb246d4031cb5d4caBill Wendling 162c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintISelInput) 163f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar PM.add(createPrintFunctionPass("\n\n" 164f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar "*** Final LLVM Code input to ISel ***\n", 1653b0da26e202cbbeb22508231f4278bda8e995391Daniel Dunbar &errs())); 166c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 16702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Standard Lower-Level Passes. 16802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 169dc756858f92a397ed30362ba8251fec56479735fDan Gohman // Enable FastISel with -fast, but allow that to be overridden. 170eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohman if (EnableFastISelOption == cl::BOU_TRUE || 17198a366d547772010e94609e4584489b3e5ce0043Bill Wendling (OptLevel == CodeGenOpt::None && EnableFastISelOption != cl::BOU_FALSE)) 172dc756858f92a397ed30362ba8251fec56479735fDan Gohman EnableFastISel = true; 173dc756858f92a397ed30362ba8251fec56479735fDan Gohman 17447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Ask the target for an isel. 175be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addInstSelector(PM, OptLevel)) 17647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return true; 17704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 17847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Print the instruction selected machine code... 17947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner if (PrintMachineCode) 18004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling PM.add(createMachineFunctionPrinterPass(cerr)); 1810f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 18298a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) { 183cc8f603f531c906782e4966107ae29667eb6632cBill Wendling PM.add(createMachineLICMPass()); 1843c42f1211874665e8ea6eea55a45024b557afa61Chris Lattner PM.add(createMachineSinkingPass()); 1858f0d99e463a2dcb5a40d14f0481a0e322bcf79e4Evan Cheng } 1860f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 187b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov // Run pre-ra passes. 188be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addPreRegAlloc(PM, OptLevel) && PrintMachineCode) 189b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov PM.add(createMachineFunctionPrinterPass(cerr)); 190b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov 1913f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform register allocation. 19247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createRegisterAllocator()); 1933f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 1943f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform stack slot coloring. 19598a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) 1962c1d7726f25b6b219a1518b411351b99d25c1a02Bill Wendling PM.add(createStackSlotColoringPass(false)); 1972c1d7726f25b6b219a1518b411351b99d25c1a02Bill Wendling /*OptLevel >= CodeGenOpt::Aggressive*/ 1983f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 19902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman if (PrintMachineCode) // Print the register-allocated code 20004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling PM.add(createMachineFunctionPrinterPass(cerr)); 20102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 2023f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Run post-ra passes. 203be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addPostRegAlloc(PM, OptLevel) && PrintMachineCode) 2043f32d65912b4da23793dab618d981be2ce11c331Evan Cheng PM.add(createMachineFunctionPrinterPass(cerr)); 2053f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 20602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman if (PrintMachineCode) 2073f32d65912b4da23793dab618d981be2ce11c331Evan Cheng PM.add(createMachineFunctionPrinterPass(cerr)); 20802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 209ada779fb11eb411536aa8219a176ca0ce4d58fd1Christopher Lamb PM.add(createLowerSubregsPass()); 21002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 211ada779fb11eb411536aa8219a176ca0ce4d58fd1Christopher Lamb if (PrintMachineCode) // Print the subreg lowered code 212ada779fb11eb411536aa8219a176ca0ce4d58fd1Christopher Lamb PM.add(createMachineFunctionPrinterPass(cerr)); 21304523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 21447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Insert prolog/epilog code. Eliminate abstract frame index references... 21547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createPrologEpilogCodeInserter()); 21602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 2173f32d65912b4da23793dab618d981be2ce11c331Evan Cheng if (PrintMachineCode) 21804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling PM.add(createMachineFunctionPrinterPass(cerr)); 21902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 220e7e7d0d7e39d0c7c659d26b97e8081fce0fcd749Dale Johannesen // Second pass scheduler. 22198a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None && !DisablePostRAScheduler) { 22272f159640382a16e036b63dcb9c0b427e6d5dc0aDale Johannesen PM.add(createPostRAScheduler()); 223e7e7d0d7e39d0c7c659d26b97e8081fce0fcd749Dale Johannesen 2245ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman if (PrintMachineCode) 2255ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman PM.add(createMachineFunctionPrinterPass(cerr)); 2265ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman } 2275ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman 22823b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman // Branch folding must be run after regalloc and prolog/epilog insertion. 22998a366d547772010e94609e4584489b3e5ce0043Bill Wendling if (OptLevel != CodeGenOpt::None) 23023b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman PM.add(createBranchFoldingPass(getEnableTailMergeDefault())); 23123b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman 23223b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman if (PrintMachineCode) 23323b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman PM.add(createMachineFunctionPrinterPass(cerr)); 23423b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman 23593f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen PM.add(createGCMachineCodeAnalysisPass()); 2363f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 23793f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen if (PrintMachineCode) 23893f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen PM.add(createMachineFunctionPrinterPass(cerr)); 23902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 24093f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen if (PrintGCInfo) 2415eca075b74d62c621b160aa216b4cd50829a2cc7Gordon Henriksen PM.add(createGCInfoPrinter(*cerr)); 24204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 24302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; 24447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 245