LLVMTargetMachine.cpp revision 1abf2cb59b8d63415780a03329307c0997b2670c
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" 2759ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng#include "llvm/MC/MCInstrInfo.h" 2856591ab218639d8a6e4c756ca37adaf20215c3b6Chris Lattner#include "llvm/MC/MCStreamer.h" 2959ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng#include "llvm/MC/MCSubtargetInfo.h" 3089b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola#include "llvm/Target/TargetAsmInfo.h" 3156591ab218639d8a6e4c756ca37adaf20215c3b6Chris Lattner#include "llvm/Target/TargetData.h" 3259ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng#include "llvm/Target/TargetInstrInfo.h" 336d823cd39d8d16571682cd1bb4cbf2ecb4815d8eDaniel Dunbar#include "llvm/Target/TargetRegistry.h" 3459ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng#include "llvm/Target/TargetSubtargetInfo.h" 3547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Transforms/Scalar.h" 366cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner#include "llvm/ADT/OwningPtr.h" 3731442f9dc5512b6a29cdb332b12ae09a1c9e8176Chris Lattner#include "llvm/Support/CommandLine.h" 382800eb1d30aea4177d6ea42adddd70e01ede8699David Greene#include "llvm/Support/Debug.h" 3971847813bc419f7a0667468136a07429c6d9f164David Greene#include "llvm/Support/FormattedStream.h" 4047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattnerusing namespace llvm; 4147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner 422c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohmannamespace llvm { 432c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman bool EnableFastISel; 442c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman} 452c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 46522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisablePostRA("disable-post-ra", cl::Hidden, 47522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Post Regalloc")); 48522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableBranchFold("disable-branch-fold", cl::Hidden, 49522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable branch folding")); 5015acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilsonstatic cl::opt<bool> DisableTailDuplicate("disable-tail-duplicate", cl::Hidden, 5115acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson cl::desc("Disable tail duplication")); 52516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilsonstatic cl::opt<bool> DisableEarlyTailDup("disable-early-taildup", cl::Hidden, 53516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilson cl::desc("Disable pre-register allocation tail duplication")); 54522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCodePlace("disable-code-place", cl::Hidden, 55522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable code placement")); 56522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableSSC("disable-ssc", cl::Hidden, 57522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Stack Slot Coloring")); 58522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineLICM("disable-machine-licm", cl::Hidden, 59522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine LICM")); 60f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Chengstatic cl::opt<bool> DisablePostRAMachineLICM("disable-postra-machine-licm", 61f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng cl::Hidden, 62f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng cl::desc("Disable Machine LICM")); 63522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineSink("disable-machine-sink", cl::Hidden, 64522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine Sinking")); 65522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableLSR("disable-lsr", cl::Hidden, 66522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Loop Strength Reduction Pass")); 67522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCGP("disable-cgp", cl::Hidden, 68522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Codegen Prepare")); 6985ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintLSR("print-lsr-output", cl::Hidden, 7085ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR produced by the loop-reduce pass")); 7185ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintISelInput("print-isel-input", cl::Hidden, 7285ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR input to isel pass")); 7393f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksenstatic cl::opt<bool> PrintGCInfo("print-gc", cl::Hidden, 7493f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen cl::desc("Dump garbage collector data")); 753538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbarstatic cl::opt<bool> ShowMCEncoding("show-mc-encoding", cl::Hidden, 763538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar cl::desc("Show encoding in .s output")); 773538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbarstatic cl::opt<bool> ShowMCInst("show-mc-inst", cl::Hidden, 783538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar cl::desc("Show instruction structure in .s output")); 79fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbarstatic cl::opt<bool> EnableMCLogging("enable-mc-api-logging", cl::Hidden, 80fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar cl::desc("Enable MC API logging")); 8148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic cl::opt<bool> VerifyMachineCode("verify-machineinstrs", cl::Hidden, 8248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::desc("Verify generated machine code"), 8348872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::init(getenv("LLVM_VERIFY_MACHINEINSTRS")!=NULL)); 8485ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner 851f21990284906b1d3ed244d99808c6dade04d295Chris Lattnerstatic cl::opt<cl::boolOrDefault> 861f21990284906b1d3ed244d99808c6dade04d295Chris LattnerAsmVerbose("asm-verbose", cl::desc("Add comments to directives."), 871f21990284906b1d3ed244d99808c6dade04d295Chris Lattner cl::init(cl::BOU_UNSET)); 881f21990284906b1d3ed244d99808c6dade04d295Chris Lattner 89e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattnerstatic bool getVerboseAsm() { 901f21990284906b1d3ed244d99808c6dade04d295Chris Lattner switch (AsmVerbose) { 91e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner default: 92e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner case cl::BOU_UNSET: return TargetMachine::getAsmVerbosityDefault(); 93e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner case cl::BOU_TRUE: return true; 94e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner case cl::BOU_FALSE: return false; 95c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach } 961f21990284906b1d3ed244d99808c6dade04d295Chris Lattner} 977da9ecf9677b751d81515f95168ae3cb2df54160Evan Cheng 98dc756858f92a397ed30362ba8251fec56479735fDan Gohman// Enable or disable FastISel. Both options are needed, because 99dc756858f92a397ed30362ba8251fec56479735fDan Gohman// FastISel is enabled by default with -fast, and we wish to be 100e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman// able to enable or disable fast-isel independently from -O0. 101eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohmanstatic cl::opt<cl::boolOrDefault> 102dc756858f92a397ed30362ba8251fec56479735fDan GohmanEnableFastISelOption("fast-isel", cl::Hidden, 103e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman cl::desc("Enable the \"fast\" instruction selector")); 1042c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 105ebdeeab812beec0385b445f3d4c41a114e0d972fEvan ChengLLVMTargetMachine::LLVMTargetMachine(const Target &T, StringRef Triple, 106ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng StringRef CPU, StringRef FS) 107ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng : TargetMachine(T, Triple, CPU, FS) { 1081abf2cb59b8d63415780a03329307c0997b2670cEvan Cheng AsmInfo = T.createMCAsmInfo(Triple); 109a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner} 110a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 111f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// Set the default code model for the JIT for a generic target. 112f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// FIXME: Is small right here? or .is64Bit() ? Large : Small? 1135ef31a039dbb9c36cfd78442b3554d1b6974ec4cChris Lattnervoid LLVMTargetMachine::setCodeModelForJIT() { 114f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModel(CodeModel::Small); 115f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher} 116a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 117f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher// Set the default code model for static compilation for a generic target. 1185ef31a039dbb9c36cfd78442b3554d1b6974ec4cChris Lattnervoid LLVMTargetMachine::setCodeModelForStatic() { 119f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModel(CodeModel::Small); 120f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher} 121a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 1225669e3009761dff20b67e18a382c334041887928Chris Lattnerbool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, 1235669e3009761dff20b67e18a382c334041887928Chris Lattner formatted_raw_ostream &Out, 1245669e3009761dff20b67e18a382c334041887928Chris Lattner CodeGenFileType FileType, 1258772f5041ce8e98695655a72a54b952583630617Dan Gohman CodeGenOpt::Level OptLevel, 1268772f5041ce8e98695655a72a54b952583630617Dan Gohman bool DisableVerify) { 12702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Add common CodeGen passes. 12811d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner MCContext *Context = 0; 12911d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Context)) 1305669e3009761dff20b67e18a382c334041887928Chris Lattner return true; 13111d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner assert(Context != 0 && "Failed to get MCContext"); 13204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 133a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar if (hasMCSaveTempLabels()) 134a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar Context->setAllowTemporaryLabels(false); 135a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar 136c18409aed80ba1c6c5998befd3c3c8edc865c423Chris Lattner const MCAsmInfo &MAI = *getMCAsmInfo(); 1376cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner OwningPtr<MCStreamer> AsmStreamer; 1386cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner 13947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner switch (FileType) { 1405669e3009761dff20b67e18a382c334041887928Chris Lattner default: return true; 1416c8d6ec2a7906733401aae121a5e1eacf477c0f5Chris Lattner case CGFT_AssemblyFile: { 1426c8d6ec2a7906733401aae121a5e1eacf477c0f5Chris Lattner MCInstPrinter *InstPrinter = 143b262799d49891b036daa00eddf51947487346c98Evan Cheng getTarget().createMCInstPrinter(MAI.getAssemblerDialect(), MAI); 1443538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar 1453538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar // Create a code emitter if asked to show the encoding. 1463538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar MCCodeEmitter *MCE = 0; 147745dacc91d7ee9531bfba76b21beb5d4eef93a7dDaniel Dunbar TargetAsmBackend *TAB = 0; 148745dacc91d7ee9531bfba76b21beb5d4eef93a7dDaniel Dunbar if (ShowMCEncoding) { 14959ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng const MCSubtargetInfo &STI = getSubtarget<MCSubtargetInfo>(); 15059ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng MCE = getTarget().createCodeEmitter(*getInstrInfo(), STI, *Context); 151ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng TAB = getTarget().createAsmBackend(getTargetTriple()); 152745dacc91d7ee9531bfba76b21beb5d4eef93a7dDaniel Dunbar } 1533538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar 15489b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MCStreamer *S = getTarget().createAsmStreamer(*Context, Out, 15589b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola getVerboseAsm(), 15689b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola hasMCUseLoc(), 157f1a5c7ec04002769f1638e64f7439589f0f926e6Rafael Espindola hasMCUseCFI(), 15889b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola InstPrinter, 159745dacc91d7ee9531bfba76b21beb5d4eef93a7dDaniel Dunbar MCE, TAB, 160e266ce6c6eaf52ebe2b18d85b5e23788cf2f6ef4Bill Wendling ShowMCInst); 161195a0ce484cd12a5adae9184188f6d0fb52b84c0Rafael Espindola AsmStreamer.reset(S); 162b5c5160a554cb0debeb7913287d9c099a753a59eChris Lattner break; 1636c8d6ec2a7906733401aae121a5e1eacf477c0f5Chris Lattner } 164ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner case CGFT_ObjectFile: { 165ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner // Create the code emitter for the target if it exists. If not, .o file 166ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner // emission fails. 16759ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng const MCSubtargetInfo &STI = getSubtarget<MCSubtargetInfo>(); 16859ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng MCCodeEmitter *MCE = getTarget().createCodeEmitter(*getInstrInfo(), STI, 16959ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng *Context); 170ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng TargetAsmBackend *TAB = getTarget().createAsmBackend(getTargetTriple()); 1711f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel Dunbar if (MCE == 0 || TAB == 0) 1725669e3009761dff20b67e18a382c334041887928Chris Lattner return true; 173cb8326dc09d900688b2d15bd9c977d1c3b722427Daniel Dunbar 174ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng AsmStreamer.reset(getTarget().createObjectStreamer(getTargetTriple(), 175ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng *Context, *TAB, Out, MCE, 17696aa78c8c5ef1a5f268539c9edc86569b436d573Rafael Espindola hasMCRelaxAll(), 17796aa78c8c5ef1a5f268539c9edc86569b436d573Rafael Espindola hasMCNoExecStack())); 178ff9dfedd101e1a591ec8f7fac9999777cde80efbRafael Espindola AsmStreamer.get()->InitSections(); 179ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner break; 1800823d2a654cb3a075016f6efd21359ed4f5aca21Chris Lattner } 1815669e3009761dff20b67e18a382c334041887928Chris Lattner case CGFT_Null: 1825669e3009761dff20b67e18a382c334041887928Chris Lattner // The Null output is intended for use for performance analysis and testing, 1835669e3009761dff20b67e18a382c334041887928Chris Lattner // not real users. 1845669e3009761dff20b67e18a382c334041887928Chris Lattner AsmStreamer.reset(createNullStreamer(*Context)); 1855669e3009761dff20b67e18a382c334041887928Chris Lattner break; 18647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner } 187fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar 188fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar if (EnableMCLogging) 189fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar AsmStreamer.reset(createLoggingStreamer(AsmStreamer.take(), errs())); 190fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar 19111d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // Create the AsmPrinter, which takes ownership of AsmStreamer if successful. 192b23569aff0a6d2b231cb93cc4acd0ac060ba560fChris Lattner FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer); 1936cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner if (Printer == 0) 1945669e3009761dff20b67e18a382c334041887928Chris Lattner return true; 195c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 19611d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // If successful, createAsmPrinter took ownership of AsmStreamer. 19711d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner AsmStreamer.take(); 198c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 1996cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner PM.add(Printer); 200c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 201f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 202f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForStatic(); 203ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes PM.add(createGCInfoDeleter()); 2045669e3009761dff20b67e18a382c334041887928Chris Lattner return false; 20502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman} 20602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 207a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// addPassesToEmitMachineCode - Add passes to the specified pass manager to 2083813d8adf3788dd01a4cb9db01c122cd5e6a13b9Chris Lattner/// get machine code emitted. This uses a JITCodeEmitter object to handle 209a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// actually outputting the machine code and resolving things like the address 210a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// of functions. This method should returns true if machine code emission is 211a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// not supported. 212a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// 213a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, 214a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes JITCodeEmitter &JCE, 2158772f5041ce8e98695655a72a54b952583630617Dan Gohman CodeGenOpt::Level OptLevel, 2168772f5041ce8e98695655a72a54b952583630617Dan Gohman bool DisableVerify) { 217f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 218f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForJIT(); 219c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 220a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes // Add common CodeGen passes. 22111d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner MCContext *Ctx = 0; 22211d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Ctx)) 223a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return true; 224a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 225cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addCodeEmitter(PM, OptLevel, JCE); 226a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createGCInfoDeleter()); 227a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 228a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return false; // success! 229a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes} 230a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 231c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// addPassesToEmitMC - Add passes to the specified pass manager to get 232c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// machine code emitted with the MCJIT. This method returns true if machine 233c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// code is not supported. It fills the MCContext Ctx pointer which can be 234c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// used to build custom MCStreamer. 235c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// 236c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Klecknerbool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM, 237c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner MCContext *&Ctx, 23831649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach raw_ostream &Out, 239c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner CodeGenOpt::Level OptLevel, 240c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner bool DisableVerify) { 241c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner // Add common CodeGen passes. 242c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Ctx)) 243c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner return true; 24431649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 245a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar if (hasMCSaveTempLabels()) 246a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar Ctx->setAllowTemporaryLabels(false); 247a7b8c2b6a416052bd7b48d3c0d702d266c6ac3a2Daniel Dunbar 24831649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach // Create the code emitter for the target if it exists. If not, .o file 24931649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach // emission fails. 25059ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng const MCSubtargetInfo &STI = getSubtarget<MCSubtargetInfo>(); 25159ee62d2418df8db499eca1ae17f5900dc2dcbbaEvan Cheng MCCodeEmitter *MCE = getTarget().createCodeEmitter(*getInstrInfo(),STI, *Ctx); 252ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng TargetAsmBackend *TAB = getTarget().createAsmBackend(getTargetTriple()); 25331649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach if (MCE == 0 || TAB == 0) 25431649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach return true; 25531649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 25631649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach OwningPtr<MCStreamer> AsmStreamer; 257ebdeeab812beec0385b445f3d4c41a114e0d972fEvan Cheng AsmStreamer.reset(getTarget().createObjectStreamer(getTargetTriple(), *Ctx, 25831649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach *TAB, Out, MCE, 25931649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach hasMCRelaxAll(), 26031649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach hasMCNoExecStack())); 26131649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach AsmStreamer.get()->InitSections(); 26231649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 26331649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach // Create the AsmPrinter, which takes ownership of AsmStreamer if successful. 26431649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer); 26531649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach if (Printer == 0) 26631649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach return true; 26731649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 26831649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach // If successful, createAsmPrinter took ownership of AsmStreamer. 26931649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach AsmStreamer.take(); 27031649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 27131649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach PM.add(Printer); 27231649e61bcead26a63c7cd452da90fff5e000b91Jim Grosbach 273c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner // Make sure the code model is set. 274c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner setCodeModelForJIT(); 275c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner 276c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner return false; // success! 277c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner} 278c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner 27911d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattnerstatic void printNoVerify(PassManagerBase &PM, const char *Banner) { 280a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen if (PrintMachineCode) 281a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen PM.add(createMachineFunctionPrinterPass(dbgs(), Banner)); 282a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen} 283a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen 28448872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic void printAndVerify(PassManagerBase &PM, 28573cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen const char *Banner) { 28648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (PrintMachineCode) 2872800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createMachineFunctionPrinterPass(dbgs(), Banner)); 28848872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 28948872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (VerifyMachineCode) 29089cab93fe999f6d81b4b99a71ac797b7ecfec277Jakob Stoklund Olesen PM.add(createMachineVerifierPass(Banner)); 29148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen} 29248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 29398a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// addCommonCodeGenPasses - Add standard LLVM codegen passes used for both 29498a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// emitting to assembly files or machine code output. 29502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman/// 296be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendlingbool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, 2978772f5041ce8e98695655a72a54b952583630617Dan Gohman CodeGenOpt::Level OptLevel, 29811d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner bool DisableVerify, 29911d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner MCContext *&OutContext) { 30047877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Standard LLVM-Level Passes. 30102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 302c1be92f3bb9158eade30d97db6997e2fe78150abDan Gohman // Basic AliasAnalysis support. 303402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that 304402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner // BasicAliasAnalysis wins if they disagree. This is intended to help 305402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner // support "obvious" type-punning idioms. 306402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner PM.add(createTypeBasedAliasAnalysisPass()); 307402d9d9935fc1ee4e13675aae7f95072da50db69Chris Lattner PM.add(createBasicAliasAnalysisPass()); 308c1be92f3bb9158eade30d97db6997e2fe78150abDan Gohman 3098772f5041ce8e98695655a72a54b952583630617Dan Gohman // Before running any passes, run the verifier to determine if the input 3108772f5041ce8e98695655a72a54b952583630617Dan Gohman // coming from the front-end and/or optimizer is valid. 3118772f5041ce8e98695655a72a54b952583630617Dan Gohman if (!DisableVerify) 3128772f5041ce8e98695655a72a54b952583630617Dan Gohman PM.add(createVerifierPass()); 3138772f5041ce8e98695655a72a54b952583630617Dan Gohman 31447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Run loop strength reduction before anything else. 315522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableLSR) { 316c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createLoopStrengthReducePass(getTargetLowering())); 317c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintLSR) 3182800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createPrintFunctionPass("\n\n*** Code after LSR ***\n", &dbgs())); 319c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner } 32002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 3212464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling PM.add(createGCLoweringPass()); 3222464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling 3232464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling // Make sure that no unreachable blocks are instruction selected. 3242464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling PM.add(createUnreachableBlockEliminationPass()); 3252464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling 326b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // Turn exception handling constructs into something the code generators can 327b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // handle. 32811d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner switch (getMCAsmInfo()->getExceptionHandlingType()) { 3291b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::SjLj: 3308b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach // SjLj piggy-backs on dwarf for this bit. The cleanups done apply to both 33186e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // Dwarf EH prepare needs to be run after SjLj prepare. Otherwise, 33286e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // catch info can get misplaced when a selector ends up more than one block 33386e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // removed from the parent invoke(s). This could happen when a landing 33486e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // pad is shared by multiple invokes and is also a target of a normal 33586e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // edge from elsewhere. 3368b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach PM.add(createSjLjEHPass(getTargetLowering())); 337af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling // FALLTHROUGH 3383965b5e974d57f3e56a2c7f37d76d73e572dfb20Anton Korobeynikov case ExceptionHandling::DwarfCFI: 339b5e16af9ea04cc1f94ca631104e5e6be96546aa1Anton Korobeynikov case ExceptionHandling::ARM: 340d652b1368b1e381382951f450e5eeca870d91dd6Charles Davis case ExceptionHandling::Win64: 34122efc18f12d8d5d0fa23b559121d211f4ea222f6Duncan Sands PM.add(createDwarfEHPass(this)); 3421b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 3431b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::None: 3441b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach PM.add(createLowerInvokePass(getTargetLowering())); 345af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling 346af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling // The lower invoke pass may create unreachable code. Remove it. 347af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling PM.add(createUnreachableBlockEliminationPass()); 3481b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 3491b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach } 350b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands 351522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCGP) 352c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createCodeGenPreparePass(getTargetLowering())); 353c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 354e9e6bdf27fca46dc9eca2ebdf73e03747d1859abBill Wendling PM.add(createStackProtectorPass(getTargetLowering())); 3552b58ce5ab4e22e796303d68fb246d4031cb5d4caBill Wendling 3568c64b9766e654079339ea7f3a2da152f18d00179Anton Korobeynikov addPreISel(PM, OptLevel); 3578c64b9766e654079339ea7f3a2da152f18d00179Anton Korobeynikov 358c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintISelInput) 359f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar PM.add(createPrintFunctionPass("\n\n" 360f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar "*** Final LLVM Code input to ISel ***\n", 3612800eb1d30aea4177d6ea42adddd70e01ede8699David Greene &dbgs())); 362c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 3638772f5041ce8e98695655a72a54b952583630617Dan Gohman // All passes which modify the LLVM IR are now complete; run the verifier 3648772f5041ce8e98695655a72a54b952583630617Dan Gohman // to ensure that the IR is valid. 3658772f5041ce8e98695655a72a54b952583630617Dan Gohman if (!DisableVerify) 3668772f5041ce8e98695655a72a54b952583630617Dan Gohman PM.add(createVerifierPass()); 3678772f5041ce8e98695655a72a54b952583630617Dan Gohman 36802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Standard Lower-Level Passes. 369c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 37011d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // Install a MachineModuleInfo class, which is an immutable pass that holds 37111d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // all the per-module stuff we're generating, including MCContext. 37289b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola TargetAsmInfo *TAI = new TargetAsmInfo(*this); 37389b9372605db2ce3b0085c84089e389f7bc1fbddRafael Espindola MachineModuleInfo *MMI = new MachineModuleInfo(*getMCAsmInfo(), TAI); 37411d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner PM.add(MMI); 37511d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner OutContext = &MMI->getContext(); // Return the MCContext specifically by-ref. 37602dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 377ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman // Set up a MachineFunction for the rest of CodeGen to work on. 378ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman PM.add(new MachineFunctionAnalysis(*this, OptLevel)); 379ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman 380dc756858f92a397ed30362ba8251fec56479735fDan Gohman // Enable FastISel with -fast, but allow that to be overridden. 381eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohman if (EnableFastISelOption == cl::BOU_TRUE || 38298a366d547772010e94609e4584489b3e5ce0043Bill Wendling (OptLevel == CodeGenOpt::None && EnableFastISelOption != cl::BOU_FALSE)) 383dc756858f92a397ed30362ba8251fec56479735fDan Gohman EnableFastISel = true; 384dc756858f92a397ed30362ba8251fec56479735fDan Gohman 38547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Ask the target for an isel. 386be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addInstSelector(PM, OptLevel)) 38747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return true; 38804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 38947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Print the instruction selected machine code... 39073cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After Instruction Selection"); 3910f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 392bd77d399c4cdc2440abde96b2861b149fae4f33eDan Gohman // Expand pseudo-instructions emitted by ISel. 393bd77d399c4cdc2440abde96b2861b149fae4f33eDan Gohman PM.add(createExpandISelPseudosPass()); 394668ac2fdae69ed358ecf690d6a07428e5a9ee2f7Dan Gohman 39525483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola // Pre-ra tail duplication. 39625483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola if (OptLevel != CodeGenOpt::None && !DisableEarlyTailDup) { 39725483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola PM.add(createTailDuplicatePass(true)); 39825483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola printAndVerify(PM, "After Pre-RegAlloc TailDuplicate"); 39925483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola } 40025483911049304c069b76f0a3b2f4f6b2216ef51Rafael Espindola 401bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson // Optimize PHIs before DCE: removing dead PHI cycles may make more 402bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson // instructions dead. 403bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson if (OptLevel != CodeGenOpt::None) 404bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson PM.add(createOptimizePHIsPass()); 40500a99a35840451a291eb61a192a750908a4073aeEvan Cheng 406a273442891ae20fd8192526132e3819ea9e5eda9Jim Grosbach // If the target requests it, assign local variables to stack slots relative 407a273442891ae20fd8192526132e3819ea9e5eda9Jim Grosbach // to one another and simplify frame index references where possible. 408a273442891ae20fd8192526132e3819ea9e5eda9Jim Grosbach PM.add(createLocalStackSlotAllocationPass()); 4093d72367d30c9ce6f387764a028763f7a366cc443Jim Grosbach 41002266e29f9250d74c5ec720aff23add3410ae920Bob Wilson if (OptLevel != CodeGenOpt::None) { 41184023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // With optimization, dead code should already be eliminated. However 41284023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // there is one known exception: lowered code for arguments that are only 41384023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // used by tail calls, where the tail calls reuse the incoming stack 41484023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // arguments directly (see t11 in test/CodeGen/X86/sibcall.ll). 41584023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman PM.add(createDeadMachineInstructionElimPass()); 41673cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After codegen DCE pass"); 41784023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman 418522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineLICM) 419522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineLICMPass()); 420fac4f1f1815b54346a805834a8c19d573ce8856cEvan Cheng PM.add(createMachineCSEPass()); 421522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineSink) 422522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineSinkingPass()); 42373cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After Machine LICM, CSE and Sinking passes"); 424c4af4638dfdab0dc3b6257276cfad2ee45053060Evan Cheng 425c4af4638dfdab0dc3b6257276cfad2ee45053060Evan Cheng PM.add(createPeepholeOptimizerPass()); 426c4af4638dfdab0dc3b6257276cfad2ee45053060Evan Cheng printAndVerify(PM, "After codegen peephole optimization pass"); 4278f0d99e463a2dcb5a40d14f0481a0e322bcf79e4Evan Cheng } 4280f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 429b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov // Run pre-ra passes. 43048872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPreRegAlloc(PM, OptLevel)) 43173cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After PreRegAlloc passes"); 432b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov 4333f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform register allocation. 434700bfada6375546f82000bdd1b4cdbe87beebea5Jakob Stoklund Olesen PM.add(createRegisterAllocator(OptLevel)); 435499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After Register Allocation"); 4363f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 437f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng // Perform stack slot coloring and post-ra machine LICM. 438f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng if (OptLevel != CodeGenOpt::None) { 4396248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // FIXME: Re-enable coloring with register when it's capable of adding 4406248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // kill markers. 441f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng if (!DisableSSC) 442f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng PM.add(createStackSlotColoringPass(false)); 443d94671a25e65918557a2c03c0fc12a60a5d138bfEvan Cheng 444d94671a25e65918557a2c03c0fc12a60a5d138bfEvan Cheng // Run post-ra machine LICM to hoist reloads / remats. 445f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng if (!DisablePostRAMachineLICM) 446f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng PM.add(createMachineLICMPass(false)); 447f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng 448f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng printAndVerify(PM, "After StackSlotColoring and postra Machine LICM"); 449499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 45002dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 4513f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Run post-ra passes. 45248872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPostRegAlloc(PM, OptLevel)) 453499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRegAlloc passes"); 45402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 455ada779fb11eb411536aa8219a176ca0ce4d58fd1Christopher Lamb PM.add(createLowerSubregsPass()); 456499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After LowerSubregs"); 45704523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 45847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Insert prolog/epilog code. Eliminate abstract frame index references... 45947877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createPrologEpilogCodeInserter()); 460499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PrologEpilogCodeInserter"); 46102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 462629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng // Run pre-sched2 passes. 463629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng if (addPreSched2(PM, OptLevel)) 464499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PreSched2 passes"); 465629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng 466e7e7d0d7e39d0c7c659d26b97e8081fce0fcd749Dale Johannesen // Second pass scheduler. 467522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisablePostRA) { 468fa16354e0370fe884830286923352268b036737dEvan Cheng PM.add(createPostRAScheduler(OptLevel)); 469499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRAScheduler"); 4705ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman } 4715ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman 47223b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman // Branch folding must be run after regalloc and prolog/epilog insertion. 473522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableBranchFold) { 474a597103c328e29fb763e7a4864bd7c29a588fc9dBob Wilson PM.add(createBranchFoldingPass(getEnableTailMergeDefault())); 475a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After BranchFolding"); 47648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen } 47723b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman 47815acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson // Tail duplication. 47915acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson if (OptLevel != CodeGenOpt::None && !DisableTailDuplicate) { 48079fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng PM.add(createTailDuplicatePass(false)); 481a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After TailDuplicate"); 48215acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson } 48315acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson 48493f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen PM.add(createGCMachineCodeAnalysisPass()); 48502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 48693f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen if (PrintGCInfo) 4872800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createGCInfoPrinter(dbgs())); 48804523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 489522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCodePlace) { 490499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman PM.add(createCodePlacementOptPass()); 491a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After CodePlacementOpt"); 492499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 493499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman 494517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng if (addPreEmitPass(PM, OptLevel)) 495a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After PreEmit passes"); 496517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng 49702dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; 49847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 499