LLVMTargetMachine.cpp revision ebdeeab812beec0385b445f3d4c41a114e0d972f
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" 16402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner#include "llvm/Analysis/Passes.h" 17572645cf84060c0fc25cb91d38cb9079918b3a88Dan Gohman#include "llvm/Analysis/Verifier.h" 1831442f9dc5512b6a29cdb332b12ae09a1c9e8176Chris Lattner#include "llvm/Assembly/PrintModulePass.h" 19789457847002f5289dbbc5cfce9d68c72e00bed1Daniel Dunbar#include "llvm/CodeGen/AsmPrinter.h" 20ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman#include "llvm/CodeGen/MachineFunctionAnalysis.h" 2111d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner#include "llvm/CodeGen/MachineModuleInfo.h" 2211d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner#include "llvm/CodeGen/GCStrategy.h" 2311d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner#include "llvm/CodeGen/Passes.h" 24195a0ce484cd12a5adae9184188f6d0fb52b84c0Rafael Espindola#include "llvm/Target/TargetLowering.h" 2547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Target/TargetOptions.h" 26af76e592c7f9deff0e55c13dbb4a34f07f1c7f64Chris Lattner#include "llvm/MC/MCAsmInfo.h" 2756591ab218639d8a6e4c756ca37adaf20215c3b6Chris Lattner#include "llvm/MC/MCStreamer.h" 2889b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola#include "llvm/Target/TargetAsmInfo.h" 2956591ab218639d8a6e4c756ca37adaf20215c3b6Chris Lattner#include "llvm/Target/TargetData.h" 306d823cd39d8d16571682cd1bb4cbf2ecb4815d8eDaniel Dunbar#include "llvm/Target/TargetRegistry.h" 3147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Transforms/Scalar.h" 326cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner#include "llvm/ADT/OwningPtr.h" 3331442f9dc5512b6a29cdb332b12ae09a1c9e8176Chris Lattner#include "llvm/Support/CommandLine.h" 342800eb1d30aea4177d6ea42adddd70e01ede8699David Greene#include "llvm/Support/Debug.h" 3571847813bc419f7a0667468136a07429c6d9f164David Greene#include "llvm/Support/FormattedStream.h" 3647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattnerusing namespace llvm; 3747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner 382c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohmannamespace llvm { 392c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman bool EnableFastISel; 402c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman} 412c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 42522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisablePostRA("disable-post-ra", cl::Hidden, 43522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Post Regalloc")); 44522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableBranchFold("disable-branch-fold", cl::Hidden, 45522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable branch folding")); 4615acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilsonstatic cl::opt<bool> DisableTailDuplicate("disable-tail-duplicate", cl::Hidden, 4715acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson cl::desc("Disable tail duplication")); 48516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilsonstatic cl::opt<bool> DisableEarlyTailDup("disable-early-taildup", cl::Hidden, 49516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilson cl::desc("Disable pre-register allocation tail duplication")); 50522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCodePlace("disable-code-place", cl::Hidden, 51522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable code placement")); 52522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableSSC("disable-ssc", cl::Hidden, 53522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Stack Slot Coloring")); 54522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineLICM("disable-machine-licm", cl::Hidden, 55522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine LICM")); 56f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Chengstatic cl::opt<bool> DisablePostRAMachineLICM("disable-postra-machine-licm", 57f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng cl::Hidden, 58f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng cl::desc("Disable Machine LICM")); 59522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineSink("disable-machine-sink", cl::Hidden, 60522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine Sinking")); 61522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableLSR("disable-lsr", cl::Hidden, 62522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Loop Strength Reduction Pass")); 63522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCGP("disable-cgp", cl::Hidden, 64522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Codegen Prepare")); 6585ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintLSR("print-lsr-output", cl::Hidden, 6685ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR produced by the loop-reduce pass")); 6785ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintISelInput("print-isel-input", cl::Hidden, 6885ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR input to isel pass")); 6993f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksenstatic cl::opt<bool> PrintGCInfo("print-gc", cl::Hidden, 7093f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen cl::desc("Dump garbage collector data")); 713538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbarstatic cl::opt<bool> ShowMCEncoding("show-mc-encoding", cl::Hidden, 723538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar cl::desc("Show encoding in .s output")); 733538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbarstatic cl::opt<bool> ShowMCInst("show-mc-inst", cl::Hidden, 743538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar cl::desc("Show instruction structure in .s output")); 75fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbarstatic cl::opt<bool> EnableMCLogging("enable-mc-api-logging", cl::Hidden, 76fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar cl::desc("Enable MC API logging")); 7748872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic cl::opt<bool> VerifyMachineCode("verify-machineinstrs", cl::Hidden, 7848872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::desc("Verify generated machine code"), 7948872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::init(getenv("LLVM_VERIFY_MACHINEINSTRS")!=NULL)); 8085ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner 811f21990284906b1d3ed244d99808c6dade04d295Chris Lattnerstatic cl::opt<cl::boolOrDefault> 821f21990284906b1d3ed244d99808c6dade04d295Chris LattnerAsmVerbose("asm-verbose", cl::desc("Add comments to directives."), 831f21990284906b1d3ed244d99808c6dade04d295Chris Lattner cl::init(cl::BOU_UNSET)); 841f21990284906b1d3ed244d99808c6dade04d295Chris Lattner 85e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattnerstatic bool getVerboseAsm() { 861f21990284906b1d3ed244d99808c6dade04d295Chris Lattner switch (AsmVerbose) { 87e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner default: 88e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner case cl::BOU_UNSET: return TargetMachine::getAsmVerbosityDefault(); 89e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner case cl::BOU_TRUE: return true; 90e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner case cl::BOU_FALSE: return false; 91c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach } 921f21990284906b1d3ed244d99808c6dade04d295Chris Lattner} 937da9ecf9677b751d81515f95168ae3cb2df54160Evan Cheng 94dc756858f92a397ed30362ba8251fec56479735fDan Gohman// Enable or disable FastISel. Both options are needed, because 95dc756858f92a397ed30362ba8251fec56479735fDan Gohman// FastISel is enabled by default with -fast, and we wish to be 96e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman// able to enable or disable fast-isel independently from -O0. 97eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohmanstatic cl::opt<cl::boolOrDefault> 98dc756858f92a397ed30362ba8251fec56479735fDan GohmanEnableFastISelOption("fast-isel", cl::Hidden, 99e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman cl::desc("Enable the \"fast\" instruction selector")); 1002c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 101ebdeeab812beec0385b445f3d4c41a114e0d972fEvan ChengLLVMTargetMachine::LLVMTargetMachine(const Target &T, StringRef Triple, 102ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng StringRef CPU, StringRef FS) 103ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng : TargetMachine(T, Triple, CPU, FS) { 104ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng AsmInfo = T.createAsmInfo(Triple); 105a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner} 106a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 107f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// Set the default code model for the JIT for a generic target. 108f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// FIXME: Is small right here? or .is64Bit() ? Large : Small? 1095ef31a039dbb9c36cfd78442b3554d1b6974ec4cChris Lattnervoid LLVMTargetMachine::setCodeModelForJIT() { 110f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModel(CodeModel::Small); 111f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher} 112a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 113f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// Set the default code model for static compilation for a generic target. 1145ef31a039dbb9c36cfd78442b3554d1b6974ec4cChris Lattnervoid LLVMTargetMachine::setCodeModelForStatic() { 115f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModel(CodeModel::Small); 116f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher} 117a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 1185669e3009761dff20b67e18a382c334041887928Chris Lattnerbool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, 1195669e3009761dff20b67e18a382c334041887928Chris Lattner formatted_raw_ostream &Out, 1205669e3009761dff20b67e18a382c334041887928Chris Lattner CodeGenFileType FileType, 1218772f5041ce8e98695655a72a54b952583630617Dan Gohman CodeGenOpt::Level OptLevel, 1228772f5041ce8e98695655a72a54b952583630617Dan Gohman bool DisableVerify) { 12302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Add common CodeGen passes. 12411d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner MCContext *Context = 0; 12511d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Context)) 1265669e3009761dff20b67e18a382c334041887928Chris Lattner return true; 12711d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner assert(Context != 0 && "Failed to get MCContext"); 12804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 129a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar if (hasMCSaveTempLabels()) 130a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar Context->setAllowTemporaryLabels(false); 131a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar 132c18409aed80ba1c6c5998befd3c3c8edc865c423Chris Lattner const MCAsmInfo &MAI = *getMCAsmInfo(); 1336cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner OwningPtr<MCStreamer> AsmStreamer; 1346cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner 13547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner switch (FileType) { 1365669e3009761dff20b67e18a382c334041887928Chris Lattner default: return true; 1376c8d6ec2a7906733401aae121a5e1eacf477c0f5Chris Lattner case CGFT_AssemblyFile: { 1386c8d6ec2a7906733401aae121a5e1eacf477c0f5Chris Lattner MCInstPrinter *InstPrinter = 139b262799d49891b036daa00eddf51947487346c98Evan Cheng getTarget().createMCInstPrinter(MAI.getAssemblerDialect(), MAI); 1403538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar 1413538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar // Create a code emitter if asked to show the encoding. 1423538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar MCCodeEmitter *MCE = 0; 143745dacc91d7ee9531bfba76b21beb5d4eef93a7dDaniel Dunbar TargetAsmBackend *TAB = 0; 144745dacc91d7ee9531bfba76b21beb5d4eef93a7dDaniel Dunbar if (ShowMCEncoding) { 1453538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar MCE = getTarget().createCodeEmitter(*this, *Context); 146ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng TAB = getTarget().createAsmBackend(getTargetTriple()); 147745dacc91d7ee9531bfba76b21beb5d4eef93a7dDaniel Dunbar } 1483538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar 14989b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCStreamer *S = getTarget().createAsmStreamer(*Context, Out, 15089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola getVerboseAsm(), 15189b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola hasMCUseLoc(), 152f1a5c7ec04002769f1638e64f7439589f0f926e6Rafael Espindola hasMCUseCFI(), 15389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola InstPrinter, 154745dacc91d7ee9531bfba76b21beb5d4eef93a7dDaniel Dunbar MCE, TAB, 155e266ce6c6eaf52ebe2b18d85b5e23788cf2f6ef4Bill Wendling ShowMCInst); 156195a0ce484cd12a5adae9184188f6d0fb52b84c0Rafael Espindola AsmStreamer.reset(S); 157b5c5160a554cb0debeb7913287d9c099a753a59eChris Lattner break; 1586c8d6ec2a7906733401aae121a5e1eacf477c0f5Chris Lattner } 159ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner case CGFT_ObjectFile: { 160ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner // Create the code emitter for the target if it exists. If not, .o file 161ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner // emission fails. 16286020e46289643de2f8c7603b550ffc8b6aff376Chris Lattner MCCodeEmitter *MCE = getTarget().createCodeEmitter(*this, *Context); 163ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng TargetAsmBackend *TAB = getTarget().createAsmBackend(getTargetTriple()); 1641f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel Dunbar if (MCE == 0 || TAB == 0) 1655669e3009761dff20b67e18a382c334041887928Chris Lattner return true; 166cb8326dc09d900688b2d15bd9c977d1c3b722427Daniel Dunbar 167ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng AsmStreamer.reset(getTarget().createObjectStreamer(getTargetTriple(), 168ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng *Context, *TAB, Out, MCE, 16996aa78c8c5ef1a5f268539c9edc86569b436d573Rafael Espindola hasMCRelaxAll(), 17096aa78c8c5ef1a5f268539c9edc86569b436d573Rafael Espindola hasMCNoExecStack())); 171ff9dfedd101e1a591ec8f7fac9999777cde80efbRafael Espindola AsmStreamer.get()->InitSections(); 172ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner break; 1730823d2a654cb3a075016f6efd21359ed4f5aca21Chris Lattner } 1745669e3009761dff20b67e18a382c334041887928Chris Lattner case CGFT_Null: 1755669e3009761dff20b67e18a382c334041887928Chris Lattner // The Null output is intended for use for performance analysis and testing, 1765669e3009761dff20b67e18a382c334041887928Chris Lattner // not real users. 1775669e3009761dff20b67e18a382c334041887928Chris Lattner AsmStreamer.reset(createNullStreamer(*Context)); 1785669e3009761dff20b67e18a382c334041887928Chris Lattner break; 17947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner } 180fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar 181fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar if (EnableMCLogging) 182fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar AsmStreamer.reset(createLoggingStreamer(AsmStreamer.take(), errs())); 183fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar 18411d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // Create the AsmPrinter, which takes ownership of AsmStreamer if successful. 185b23569aff0a6d2b231cb93cc4acd0ac060ba560fChris Lattner FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer); 1866cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner if (Printer == 0) 1875669e3009761dff20b67e18a382c334041887928Chris Lattner return true; 188c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 18911d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // If successful, createAsmPrinter took ownership of AsmStreamer. 19011d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner AsmStreamer.take(); 191c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 1926cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner PM.add(Printer); 193c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 194f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 195f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForStatic(); 196ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes PM.add(createGCInfoDeleter()); 1975669e3009761dff20b67e18a382c334041887928Chris Lattner return false; 19802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman} 19902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 200a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// addPassesToEmitMachineCode - Add passes to the specified pass manager to 2013813d8adf3788dd01a4cb9db01c122cd5e6a13b9Chris Lattner/// get machine code emitted. This uses a JITCodeEmitter object to handle 202a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// actually outputting the machine code and resolving things like the address 203a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// of functions. This method should returns true if machine code emission is 204a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// not supported. 205a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// 206a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, 207a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes JITCodeEmitter &JCE, 2088772f5041ce8e98695655a72a54b952583630617Dan Gohman CodeGenOpt::Level OptLevel, 2098772f5041ce8e98695655a72a54b952583630617Dan Gohman bool DisableVerify) { 210f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 211f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForJIT(); 212c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 213a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes // Add common CodeGen passes. 21411d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner MCContext *Ctx = 0; 21511d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Ctx)) 216a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return true; 217a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 218cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addCodeEmitter(PM, OptLevel, JCE); 219a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createGCInfoDeleter()); 220a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 221a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return false; // success! 222a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes} 223a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 224c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// addPassesToEmitMC - Add passes to the specified pass manager to get 225c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// machine code emitted with the MCJIT. This method returns true if machine 226c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// code is not supported. It fills the MCContext Ctx pointer which can be 227c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// used to build custom MCStreamer. 228c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// 229c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Klecknerbool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM, 230c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner MCContext *&Ctx, 23131649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach raw_ostream &Out, 232c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner CodeGenOpt::Level OptLevel, 233c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner bool DisableVerify) { 234c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner // Add common CodeGen passes. 235c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Ctx)) 236c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner return true; 23731649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 238a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar if (hasMCSaveTempLabels()) 239a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar Ctx->setAllowTemporaryLabels(false); 240a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar 24131649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach // Create the code emitter for the target if it exists. If not, .o file 24231649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach // emission fails. 24331649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach MCCodeEmitter *MCE = getTarget().createCodeEmitter(*this, *Ctx); 244ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng TargetAsmBackend *TAB = getTarget().createAsmBackend(getTargetTriple()); 24531649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach if (MCE == 0 || TAB == 0) 24631649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach return true; 24731649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 24831649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach OwningPtr<MCStreamer> AsmStreamer; 249ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng AsmStreamer.reset(getTarget().createObjectStreamer(getTargetTriple(), *Ctx, 25031649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach *TAB, Out, MCE, 25131649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach hasMCRelaxAll(), 25231649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach hasMCNoExecStack())); 25331649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach AsmStreamer.get()->InitSections(); 25431649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 25531649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach // Create the AsmPrinter, which takes ownership of AsmStreamer if successful. 25631649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer); 25731649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach if (Printer == 0) 25831649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach return true; 25931649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 26031649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach // If successful, createAsmPrinter took ownership of AsmStreamer. 26131649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach AsmStreamer.take(); 26231649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 26331649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach PM.add(Printer); 26431649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 265c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner // Make sure the code model is set. 266c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner setCodeModelForJIT(); 267c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner 268c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner return false; // success! 269c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner} 270c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner 27111d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattnerstatic void printNoVerify(PassManagerBase &PM, const char *Banner) { 272a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen if (PrintMachineCode) 273a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen PM.add(createMachineFunctionPrinterPass(dbgs(), Banner)); 274a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen} 275a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen 27648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic void printAndVerify(PassManagerBase &PM, 27773cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen const char *Banner) { 27848872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (PrintMachineCode) 2792800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createMachineFunctionPrinterPass(dbgs(), Banner)); 28048872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 28148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (VerifyMachineCode) 28289cab93fe999f6d81b4b99a71ac797b7ecfec277Jakob Stoklund Olesen PM.add(createMachineVerifierPass(Banner)); 28348872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen} 28448872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 28598a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// addCommonCodeGenPasses - Add standard LLVM codegen passes used for both 28698a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// emitting to assembly files or machine code output. 28702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman/// 288be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendlingbool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, 2898772f5041ce8e98695655a72a54b952583630617Dan Gohman CodeGenOpt::Level OptLevel, 29011d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner bool DisableVerify, 29111d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner MCContext *&OutContext) { 29247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Standard LLVM-Level Passes. 29302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 294c1be92f3bb9158eade30d97db6997e2fe78150abDan Gohman // Basic AliasAnalysis support. 295402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that 296402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner // BasicAliasAnalysis wins if they disagree. This is intended to help 297402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner // support "obvious" type-punning idioms. 298402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner PM.add(createTypeBasedAliasAnalysisPass()); 299402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner PM.add(createBasicAliasAnalysisPass()); 300c1be92f3bb9158eade30d97db6997e2fe78150abDan Gohman 3018772f5041ce8e98695655a72a54b952583630617Dan Gohman // Before running any passes, run the verifier to determine if the input 3028772f5041ce8e98695655a72a54b952583630617Dan Gohman // coming from the front-end and/or optimizer is valid. 3038772f5041ce8e98695655a72a54b952583630617Dan Gohman if (!DisableVerify) 3048772f5041ce8e98695655a72a54b952583630617Dan Gohman PM.add(createVerifierPass()); 3058772f5041ce8e98695655a72a54b952583630617Dan Gohman 30647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Run loop strength reduction before anything else. 307522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableLSR) { 308c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createLoopStrengthReducePass(getTargetLowering())); 309c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintLSR) 3102800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createPrintFunctionPass("\n\n*** Code after LSR ***\n", &dbgs())); 311c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner } 31202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 3132464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling PM.add(createGCLoweringPass()); 3142464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling 3152464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling // Make sure that no unreachable blocks are instruction selected. 3162464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling PM.add(createUnreachableBlockEliminationPass()); 3172464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling 318b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // Turn exception handling constructs into something the code generators can 319b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // handle. 32011d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner switch (getMCAsmInfo()->getExceptionHandlingType()) { 3211b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::SjLj: 3228b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach // SjLj piggy-backs on dwarf for this bit. The cleanups done apply to both 32386e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // Dwarf EH prepare needs to be run after SjLj prepare. Otherwise, 32486e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // catch info can get misplaced when a selector ends up more than one block 32586e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // removed from the parent invoke(s). This could happen when a landing 32686e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // pad is shared by multiple invokes and is also a target of a normal 32786e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // edge from elsewhere. 3288b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach PM.add(createSjLjEHPass(getTargetLowering())); 329af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling // FALLTHROUGH 3303965b5e974d57f3e56a2c7f37d76d73e572dfb20Anton Korobeynikov case ExceptionHandling::DwarfCFI: 331b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov case ExceptionHandling::ARM: 332d652b1368b1e381382951f450e5eeca870d91dd6Charles Davis case ExceptionHandling::Win64: 33322efc18f12d8d5d0fa23b559121d211f4ea222f6Duncan Sands PM.add(createDwarfEHPass(this)); 3341b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 3351b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::None: 3361b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach PM.add(createLowerInvokePass(getTargetLowering())); 337af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling 338af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling // The lower invoke pass may create unreachable code. Remove it. 339af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling PM.add(createUnreachableBlockEliminationPass()); 3401b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 3411b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach } 342b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands 343522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCGP) 344c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createCodeGenPreparePass(getTargetLowering())); 345c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 346e9e6bdf27fca46dc9eca2ebdf73e03747d1859abBill Wendling PM.add(createStackProtectorPass(getTargetLowering())); 3472b58ce5ab4e22e796303d68fb246d4031cb5d4caBill Wendling 3488c64b9766e654079339ea7f3a2da152f18d00179Anton Korobeynikov addPreISel(PM, OptLevel); 3498c64b9766e654079339ea7f3a2da152f18d00179Anton Korobeynikov 350c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintISelInput) 351f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar PM.add(createPrintFunctionPass("\n\n" 352f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar "*** Final LLVM Code input to ISel ***\n", 3532800eb1d30aea4177d6ea42adddd70e01ede8699David Greene &dbgs())); 354c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 3558772f5041ce8e98695655a72a54b952583630617Dan Gohman // All passes which modify the LLVM IR are now complete; run the verifier 3568772f5041ce8e98695655a72a54b952583630617Dan Gohman // to ensure that the IR is valid. 3578772f5041ce8e98695655a72a54b952583630617Dan Gohman if (!DisableVerify) 3588772f5041ce8e98695655a72a54b952583630617Dan Gohman PM.add(createVerifierPass()); 3598772f5041ce8e98695655a72a54b952583630617Dan Gohman 36002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Standard Lower-Level Passes. 361c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 36211d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // Install a MachineModuleInfo class, which is an immutable pass that holds 36311d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // all the per-module stuff we're generating, including MCContext. 36489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola TargetAsmInfo *TAI = new TargetAsmInfo(*this); 36589b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MachineModuleInfo *MMI = new MachineModuleInfo(*getMCAsmInfo(), TAI); 36611d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner PM.add(MMI); 36711d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner OutContext = &MMI->getContext(); // Return the MCContext specifically by-ref. 36802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 369ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman // Set up a MachineFunction for the rest of CodeGen to work on. 370ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman PM.add(new MachineFunctionAnalysis(*this, OptLevel)); 371ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman 372dc756858f92a397ed30362ba8251fec56479735fDan Gohman // Enable FastISel with -fast, but allow that to be overridden. 373eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohman if (EnableFastISelOption == cl::BOU_TRUE || 37498a366d547772010e94609e4584489b3e5ce0043Bill Wendling (OptLevel == CodeGenOpt::None && EnableFastISelOption != cl::BOU_FALSE)) 375dc756858f92a397ed30362ba8251fec56479735fDan Gohman EnableFastISel = true; 376dc756858f92a397ed30362ba8251fec56479735fDan Gohman 37747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Ask the target for an isel. 378be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addInstSelector(PM, OptLevel)) 37947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return true; 38004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 38147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Print the instruction selected machine code... 38273cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After Instruction Selection"); 3830f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 384bd77d399c4cdc2440abde96b2861b149fae4f33eDan Gohman // Expand pseudo-instructions emitted by ISel. 385bd77d399c4cdc2440abde96b2861b149fae4f33eDan Gohman PM.add(createExpandISelPseudosPass()); 386668ac2fdae69ed358ecf690d6a07428e5a9ee2f7Dan Gohman 38725483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola // Pre-ra tail duplication. 38825483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola if (OptLevel != CodeGenOpt::None && !DisableEarlyTailDup) { 38925483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola PM.add(createTailDuplicatePass(true)); 39025483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola printAndVerify(PM, "After Pre-RegAlloc TailDuplicate"); 39125483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola } 39225483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola 393bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson // Optimize PHIs before DCE: removing dead PHI cycles may make more 394bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson // instructions dead. 395bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson if (OptLevel != CodeGenOpt::None) 396bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson PM.add(createOptimizePHIsPass()); 39700a99a35840451a291eb61a192a750908a4073aeEvan Cheng 398a273442891ae20fd8192526132e3819ea9e5eda9Jim Grosbach // If the target requests it, assign local variables to stack slots relative 399a273442891ae20fd8192526132e3819ea9e5eda9Jim Grosbach // to one another and simplify frame index references where possible. 400a273442891ae20fd8192526132e3819ea9e5eda9Jim Grosbach PM.add(createLocalStackSlotAllocationPass()); 4013d72367d30c9ce6f387764a028763f7a366cc443Jim Grosbach 40202266e29f9250d74c5ec720aff23add3410ae920Bob Wilson if (OptLevel != CodeGenOpt::None) { 40384023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // With optimization, dead code should already be eliminated. However 40484023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // there is one known exception: lowered code for arguments that are only 40584023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // used by tail calls, where the tail calls reuse the incoming stack 40684023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // arguments directly (see t11 in test/CodeGen/X86/sibcall.ll). 40784023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman PM.add(createDeadMachineInstructionElimPass()); 40873cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After codegen DCE pass"); 40984023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman 410522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineLICM) 411522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineLICMPass()); 412fac4f1f1815b54346a805834a8c19d573ce8856cEvan Cheng PM.add(createMachineCSEPass()); 413522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineSink) 414522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineSinkingPass()); 41573cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After Machine LICM, CSE and Sinking passes"); 416c4af4638dfdab0dc3b6257276cfad2ee45053060Evan Cheng 417c4af4638dfdab0dc3b6257276cfad2ee45053060Evan Cheng PM.add(createPeepholeOptimizerPass()); 418c4af4638dfdab0dc3b6257276cfad2ee45053060Evan Cheng printAndVerify(PM, "After codegen peephole optimization pass"); 4198f0d99e463a2dcb5a40d14f0481a0e322bcf79e4Evan Cheng } 4200f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 421b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov // Run pre-ra passes. 42248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPreRegAlloc(PM, OptLevel)) 42373cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After PreRegAlloc passes"); 424b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov 4253f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform register allocation. 426700bfada6375546f82000bdd1b4cdbe87beebea5Jakob Stoklund Olesen PM.add(createRegisterAllocator(OptLevel)); 427499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After Register Allocation"); 4283f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 429f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng // Perform stack slot coloring and post-ra machine LICM. 430f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng if (OptLevel != CodeGenOpt::None) { 4316248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // FIXME: Re-enable coloring with register when it's capable of adding 4326248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // kill markers. 433f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng if (!DisableSSC) 434f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng PM.add(createStackSlotColoringPass(false)); 435d94671a25e65918557a2c03c0fc12a60a5d138bfEvan Cheng 436d94671a25e65918557a2c03c0fc12a60a5d138bfEvan Cheng // Run post-ra machine LICM to hoist reloads / remats. 437f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng if (!DisablePostRAMachineLICM) 438f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng PM.add(createMachineLICMPass(false)); 439f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng 440f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng printAndVerify(PM, "After StackSlotColoring and postra Machine LICM"); 441499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 44202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 4433f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Run post-ra passes. 44448872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPostRegAlloc(PM, OptLevel)) 445499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRegAlloc passes"); 44602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 447ada779fb11eb411536aa8219a176ca0ce4d58fd1Christopher Lamb PM.add(createLowerSubregsPass()); 448499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After LowerSubregs"); 44904523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 45047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Insert prolog/epilog code. Eliminate abstract frame index references... 45147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createPrologEpilogCodeInserter()); 452499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PrologEpilogCodeInserter"); 45302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 454629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng // Run pre-sched2 passes. 455629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng if (addPreSched2(PM, OptLevel)) 456499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PreSched2 passes"); 457629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng 458e7e7d0d7e39d0c7c659d26b97e8081fce0fcd749Dale Johannesen // Second pass scheduler. 459522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisablePostRA) { 460fa16354e0370fe884830286923352268b036737dEvan Cheng PM.add(createPostRAScheduler(OptLevel)); 461499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRAScheduler"); 4625ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman } 4635ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman 46423b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman // Branch folding must be run after regalloc and prolog/epilog insertion. 465522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableBranchFold) { 466a597103c328e29fb763e7a4864bd7c29a588fc9dBob Wilson PM.add(createBranchFoldingPass(getEnableTailMergeDefault())); 467a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After BranchFolding"); 46848872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen } 46923b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman 47015acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson // Tail duplication. 47115acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson if (OptLevel != CodeGenOpt::None && !DisableTailDuplicate) { 47279fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng PM.add(createTailDuplicatePass(false)); 473a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After TailDuplicate"); 47415acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson } 47515acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson 47693f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen PM.add(createGCMachineCodeAnalysisPass()); 47702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 47893f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen if (PrintGCInfo) 4792800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createGCInfoPrinter(dbgs())); 48004523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 481522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCodePlace) { 482499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman PM.add(createCodePlacementOptPass()); 483a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After CodePlacementOpt"); 484499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 485499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman 486517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng if (addPreEmitPass(PM, OptLevel)) 487a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After PreEmit passes"); 488517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng 48902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; 49047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 491