LLVMTargetMachine.cpp revision 668ac2fdae69ed358ecf690d6a07428e5a9ee2f7
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" 16572645cf84060c0fc25cb91d38cb9079918b3a88Dan Gohman#include "llvm/Analysis/Verifier.h" 1731442f9dc5512b6a29cdb332b12ae09a1c9e8176Chris Lattner#include "llvm/Assembly/PrintModulePass.h" 18789457847002f5289dbbc5cfce9d68c72e00bed1Daniel Dunbar#include "llvm/CodeGen/AsmPrinter.h" 19ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman#include "llvm/CodeGen/MachineFunctionAnalysis.h" 2011d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner#include "llvm/CodeGen/MachineModuleInfo.h" 2111d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner#include "llvm/CodeGen/GCStrategy.h" 2211d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner#include "llvm/CodeGen/Passes.h" 2347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Target/TargetOptions.h" 24af76e592c7f9deff0e55c13dbb4a34f07f1c7f64Chris Lattner#include "llvm/MC/MCAsmInfo.h" 2556591ab218639d8a6e4c756ca37adaf20215c3b6Chris Lattner#include "llvm/MC/MCStreamer.h" 2656591ab218639d8a6e4c756ca37adaf20215c3b6Chris Lattner#include "llvm/Target/TargetData.h" 276d823cd39d8d16571682cd1bb4cbf2ecb4815d8eDaniel Dunbar#include "llvm/Target/TargetRegistry.h" 2847877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner#include "llvm/Transforms/Scalar.h" 296cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner#include "llvm/ADT/OwningPtr.h" 3031442f9dc5512b6a29cdb332b12ae09a1c9e8176Chris Lattner#include "llvm/Support/CommandLine.h" 312800eb1d30aea4177d6ea42adddd70e01ede8699David Greene#include "llvm/Support/Debug.h" 3271847813bc419f7a0667468136a07429c6d9f164David Greene#include "llvm/Support/FormattedStream.h" 334021fccf9fdb60906e5f16c98e72042240867495Dan Gohman#include "llvm/Support/StandardPasses.h" 3447877050e7ea02c3514497aba54eef1d4cee8452Chris Lattnerusing namespace llvm; 3547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner 362c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohmannamespace llvm { 372c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman bool EnableFastISel; 382c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman} 392c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 40522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisablePostRA("disable-post-ra", cl::Hidden, 41522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Post Regalloc")); 42522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableBranchFold("disable-branch-fold", cl::Hidden, 43522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable branch folding")); 4415acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilsonstatic cl::opt<bool> DisableTailDuplicate("disable-tail-duplicate", cl::Hidden, 4515acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson cl::desc("Disable tail duplication")); 46516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilsonstatic cl::opt<bool> DisableEarlyTailDup("disable-early-taildup", cl::Hidden, 47516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilson cl::desc("Disable pre-register allocation tail duplication")); 48522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCodePlace("disable-code-place", cl::Hidden, 49522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable code placement")); 50522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableSSC("disable-ssc", cl::Hidden, 51522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Stack Slot Coloring")); 52522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineLICM("disable-machine-licm", cl::Hidden, 53522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine LICM")); 54f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Chengstatic cl::opt<bool> DisablePostRAMachineLICM("disable-postra-machine-licm", 55f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng cl::Hidden, 56f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng cl::desc("Disable Machine LICM")); 57522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableMachineSink("disable-machine-sink", cl::Hidden, 58522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Machine Sinking")); 59522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableLSR("disable-lsr", cl::Hidden, 60522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Loop Strength Reduction Pass")); 61522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopherstatic cl::opt<bool> DisableCGP("disable-cgp", cl::Hidden, 62522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher cl::desc("Disable Codegen Prepare")); 6385ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintLSR("print-lsr-output", cl::Hidden, 6485ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR produced by the loop-reduce pass")); 6585ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattnerstatic cl::opt<bool> PrintISelInput("print-isel-input", cl::Hidden, 6685ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner cl::desc("Print LLVM IR input to isel pass")); 6793f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksenstatic cl::opt<bool> PrintGCInfo("print-gc", cl::Hidden, 6893f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen cl::desc("Dump garbage collector data")); 693538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbarstatic cl::opt<bool> ShowMCEncoding("show-mc-encoding", cl::Hidden, 703538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar cl::desc("Show encoding in .s output")); 713538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbarstatic cl::opt<bool> ShowMCInst("show-mc-inst", cl::Hidden, 723538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar cl::desc("Show instruction structure in .s output")); 73fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbarstatic cl::opt<bool> EnableMCLogging("enable-mc-api-logging", cl::Hidden, 74fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar cl::desc("Enable MC API logging")); 7548872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic cl::opt<bool> VerifyMachineCode("verify-machineinstrs", cl::Hidden, 7648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::desc("Verify generated machine code"), 7748872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen cl::init(getenv("LLVM_VERIFY_MACHINEINSTRS")!=NULL)); 7885ef2546303fabe32de3f2519a978fa2a7fd5958Chris Lattner 791f21990284906b1d3ed244d99808c6dade04d295Chris Lattnerstatic cl::opt<cl::boolOrDefault> 801f21990284906b1d3ed244d99808c6dade04d295Chris LattnerAsmVerbose("asm-verbose", cl::desc("Add comments to directives."), 811f21990284906b1d3ed244d99808c6dade04d295Chris Lattner cl::init(cl::BOU_UNSET)); 821f21990284906b1d3ed244d99808c6dade04d295Chris Lattner 83e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattnerstatic bool getVerboseAsm() { 841f21990284906b1d3ed244d99808c6dade04d295Chris Lattner switch (AsmVerbose) { 85e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner default: 86e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner case cl::BOU_UNSET: return TargetMachine::getAsmVerbosityDefault(); 87e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner case cl::BOU_TRUE: return true; 88e16ad1a9833c89965c921f137cfb6c424ff3e9c2Chris Lattner case cl::BOU_FALSE: return false; 89c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach } 901f21990284906b1d3ed244d99808c6dade04d295Chris Lattner} 917da9ecf9677b751d81515f95168ae3cb2df54160Evan Cheng 92dc756858f92a397ed30362ba8251fec56479735fDan Gohman// Enable or disable FastISel. Both options are needed, because 93dc756858f92a397ed30362ba8251fec56479735fDan Gohman// FastISel is enabled by default with -fast, and we wish to be 94e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman// able to enable or disable fast-isel independently from -O0. 95eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohmanstatic cl::opt<cl::boolOrDefault> 96dc756858f92a397ed30362ba8251fec56479735fDan GohmanEnableFastISelOption("fast-isel", cl::Hidden, 97e29fea4434b784bd8d908088c0ee4d4788080088Dan Gohman cl::desc("Enable the \"fast\" instruction selector")); 982c4bf119be8aa05cdc3dc88c57006353f07f0d2cDan Gohman 992e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman// Enable or disable an experimental optimization to split GEPs 1002e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman// and run a special GVN pass which does not examine loads, in 1012e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman// an effort to factor out redundancy implicit in complex GEPs. 1022e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohmanstatic cl::opt<bool> EnableSplitGEPGVN("split-gep-gvn", cl::Hidden, 1032e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman cl::desc("Split GEPs and run no-load GVN")); 104a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner 105a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris LattnerLLVMTargetMachine::LLVMTargetMachine(const Target &T, 1061f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel Dunbar const std::string &Triple) 1071f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel Dunbar : TargetMachine(T), TargetTriple(Triple) { 108a7ac47cee1a0b3f4c798ecaa22ecf9d1be9c07e6Chris Lattner AsmInfo = T.createAsmInfo(TargetTriple); 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 133c18409aed80ba1c6c5998befd3c3c8edc865c423Chris Lattner const MCAsmInfo &MAI = *getMCAsmInfo(); 1346cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner OwningPtr<MCStreamer> AsmStreamer; 1356cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner 13647877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner switch (FileType) { 1375669e3009761dff20b67e18a382c334041887928Chris Lattner default: return true; 1386c8d6ec2a7906733401aae121a5e1eacf477c0f5Chris Lattner case CGFT_AssemblyFile: { 1396c8d6ec2a7906733401aae121a5e1eacf477c0f5Chris Lattner MCInstPrinter *InstPrinter = 140d374087be5360a353a4239a155b1227057145f48Chris Lattner getTarget().createMCInstPrinter(MAI.getAssemblerDialect(), MAI); 1413538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar 1423538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar // Create a code emitter if asked to show the encoding. 1433538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar MCCodeEmitter *MCE = 0; 1443538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar if (ShowMCEncoding) 1453538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar MCE = getTarget().createCodeEmitter(*this, *Context); 1463538c808f8fd1d4124f0cda4c962467ec8ae5b70Daniel Dunbar 1476da24ca51d0a0483b4ff1537a177bd172997f129Che-Liang Chiou AsmStreamer.reset(getTarget().createAsmStreamer(*Context, Out, 1486da24ca51d0a0483b4ff1537a177bd172997f129Che-Liang Chiou getTargetData()->isLittleEndian(), 1496da24ca51d0a0483b4ff1537a177bd172997f129Che-Liang Chiou getVerboseAsm(), 1506da24ca51d0a0483b4ff1537a177bd172997f129Che-Liang Chiou InstPrinter, MCE, 1516da24ca51d0a0483b4ff1537a177bd172997f129Che-Liang Chiou ShowMCInst)); 152b5c5160a554cb0debeb7913287d9c099a753a59eChris Lattner break; 1536c8d6ec2a7906733401aae121a5e1eacf477c0f5Chris Lattner } 154ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner case CGFT_ObjectFile: { 155ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner // Create the code emitter for the target if it exists. If not, .o file 156ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner // emission fails. 15786020e46289643de2f8c7603b550ffc8b6aff376Chris Lattner MCCodeEmitter *MCE = getTarget().createCodeEmitter(*this, *Context); 1581f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel Dunbar TargetAsmBackend *TAB = getTarget().createAsmBackend(TargetTriple); 1591f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel Dunbar if (MCE == 0 || TAB == 0) 1605669e3009761dff20b67e18a382c334041887928Chris Lattner return true; 161cb8326dc09d900688b2d15bd9c977d1c3b722427Daniel Dunbar 162cb8326dc09d900688b2d15bd9c977d1c3b722427Daniel Dunbar AsmStreamer.reset(getTarget().createObjectStreamer(TargetTriple, *Context, 163cb8326dc09d900688b2d15bd9c977d1c3b722427Daniel Dunbar *TAB, Out, MCE, 164cb8326dc09d900688b2d15bd9c977d1c3b722427Daniel Dunbar hasMCRelaxAll())); 165ff9dfedd101e1a591ec8f7fac9999777cde80efbRafael Espindola AsmStreamer.get()->InitSections(); 166ac7798e9062f9bc371709ed445e1b3153b581e9aChris Lattner break; 1670823d2a654cb3a075016f6efd21359ed4f5aca21Chris Lattner } 1685669e3009761dff20b67e18a382c334041887928Chris Lattner case CGFT_Null: 1695669e3009761dff20b67e18a382c334041887928Chris Lattner // The Null output is intended for use for performance analysis and testing, 1705669e3009761dff20b67e18a382c334041887928Chris Lattner // not real users. 1715669e3009761dff20b67e18a382c334041887928Chris Lattner AsmStreamer.reset(createNullStreamer(*Context)); 1725669e3009761dff20b67e18a382c334041887928Chris Lattner break; 17347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner } 174fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar 175fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar if (EnableMCLogging) 176fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar AsmStreamer.reset(createLoggingStreamer(AsmStreamer.take(), errs())); 177fdb5a8617996a20370756962e34c2e80176d6e87Daniel Dunbar 17811d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // Create the AsmPrinter, which takes ownership of AsmStreamer if successful. 179b23569aff0a6d2b231cb93cc4acd0ac060ba560fChris Lattner FunctionPass *Printer = getTarget().createAsmPrinter(*this, *AsmStreamer); 1806cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner if (Printer == 0) 1815669e3009761dff20b67e18a382c334041887928Chris Lattner return true; 182c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 18311d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // If successful, createAsmPrinter took ownership of AsmStreamer. 18411d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner AsmStreamer.take(); 185c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 1866cafdcc9afb294b62962f94f03cc48d6b18712d0Chris Lattner PM.add(Printer); 187c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 188f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 189f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForStatic(); 190ac57e6e498abccb117e0d61c2fa0f733845e50cbBruno Cardoso Lopes PM.add(createGCInfoDeleter()); 1915669e3009761dff20b67e18a382c334041887928Chris Lattner return false; 19202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman} 19302dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 194a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// addPassesToEmitMachineCode - Add passes to the specified pass manager to 1953813d8adf3788dd01a4cb9db01c122cd5e6a13b9Chris Lattner/// get machine code emitted. This uses a JITCodeEmitter object to handle 196a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// actually outputting the machine code and resolving things like the address 197a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// of functions. This method should returns true if machine code emission is 198a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// not supported. 199a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes/// 200a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopesbool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM, 201a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes JITCodeEmitter &JCE, 2028772f5041ce8e98695655a72a54b952583630617Dan Gohman CodeGenOpt::Level OptLevel, 2038772f5041ce8e98695655a72a54b952583630617Dan Gohman bool DisableVerify) { 204f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher // Make sure the code model is set. 205f4f43cb5011611d44219ffb1caa988f5adf305bfEric Christopher setCodeModelForJIT(); 206c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 207a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes // Add common CodeGen passes. 20811d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner MCContext *Ctx = 0; 20911d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Ctx)) 210a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return true; 211a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 212cfe9a605eea542d91e3db74289b69b7e317d90a6Daniel Dunbar addCodeEmitter(PM, OptLevel, JCE); 213a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes PM.add(createGCInfoDeleter()); 214a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 215a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes return false; // success! 216a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes} 217a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes 218c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// addPassesToEmitMC - Add passes to the specified pass manager to get 219c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// machine code emitted with the MCJIT. This method returns true if machine 220c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// code is not supported. It fills the MCContext Ctx pointer which can be 221c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// used to build custom MCStreamer. 222c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner/// 223c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Klecknerbool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM, 224c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner MCContext *&Ctx, 225c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner CodeGenOpt::Level OptLevel, 226c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner bool DisableVerify) { 227c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner // Add common CodeGen passes. 228c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Ctx)) 229c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner return true; 230c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner // Make sure the code model is set. 231c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner setCodeModelForJIT(); 232c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner 233c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner return false; // success! 234c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner} 235c96a82a53415fd0b6cb1bbea2593dc18683c70ccReid Kleckner 23611d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattnerstatic void printNoVerify(PassManagerBase &PM, const char *Banner) { 237a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen if (PrintMachineCode) 238a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen PM.add(createMachineFunctionPrinterPass(dbgs(), Banner)); 239a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen} 240a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen 24148872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesenstatic void printAndVerify(PassManagerBase &PM, 24273cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen const char *Banner) { 24348872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (PrintMachineCode) 2442800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createMachineFunctionPrinterPass(dbgs(), Banner)); 24548872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 24648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (VerifyMachineCode) 24773cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen PM.add(createMachineVerifierPass()); 24848872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen} 24948872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen 25098a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// addCommonCodeGenPasses - Add standard LLVM codegen passes used for both 25198a366d547772010e94609e4584489b3e5ce0043Bill Wendling/// emitting to assembly files or machine code output. 25202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman/// 253be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendlingbool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, 2548772f5041ce8e98695655a72a54b952583630617Dan Gohman CodeGenOpt::Level OptLevel, 25511d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner bool DisableVerify, 25611d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner MCContext *&OutContext) { 25747877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Standard LLVM-Level Passes. 25802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 259c1be92f3bb9158eade30d97db6997e2fe78150abDan Gohman // Basic AliasAnalysis support. 2604021fccf9fdb60906e5f16c98e72042240867495Dan Gohman createStandardAliasAnalysisPasses(&PM); 261c1be92f3bb9158eade30d97db6997e2fe78150abDan Gohman 2628772f5041ce8e98695655a72a54b952583630617Dan Gohman // Before running any passes, run the verifier to determine if the input 2638772f5041ce8e98695655a72a54b952583630617Dan Gohman // coming from the front-end and/or optimizer is valid. 2648772f5041ce8e98695655a72a54b952583630617Dan Gohman if (!DisableVerify) 2658772f5041ce8e98695655a72a54b952583630617Dan Gohman PM.add(createVerifierPass()); 2668772f5041ce8e98695655a72a54b952583630617Dan Gohman 2672e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman // Optionally, tun split-GEPs and no-load GVN. 2682e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman if (EnableSplitGEPGVN) { 2692e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman PM.add(createGEPSplitterPass()); 27060df9077ebe2a38723beadedd88e349f9aa214cbBob Wilson PM.add(createGVNPass(/*NoLoads=*/true)); 2712e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman } 2722e7e94826a4cf6715b4c07d779fb84994c0bc47bDan Gohman 27347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Run loop strength reduction before anything else. 274522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableLSR) { 275c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createLoopStrengthReducePass(getTargetLowering())); 276c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintLSR) 2772800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createPrintFunctionPass("\n\n*** Code after LSR ***\n", &dbgs())); 278c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner } 27902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 2802464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling PM.add(createGCLoweringPass()); 2812464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling 2822464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling // Make sure that no unreachable blocks are instruction selected. 2832464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling PM.add(createUnreachableBlockEliminationPass()); 2842464d618c0043b8dcd13170f145f5add7738aad3Bill Wendling 285b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // Turn exception handling constructs into something the code generators can 286b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands // handle. 28711d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner switch (getMCAsmInfo()->getExceptionHandlingType()) { 2881b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::SjLj: 2898b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach // SjLj piggy-backs on dwarf for this bit. The cleanups done apply to both 29086e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // Dwarf EH prepare needs to be run after SjLj prepare. Otherwise, 29186e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // catch info can get misplaced when a selector ends up more than one block 29286e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // removed from the parent invoke(s). This could happen when a landing 29386e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // pad is shared by multiple invokes and is also a target of a normal 29486e69fa901ea0e04bc24ae3d8f757bccc84c10e6Jim Grosbach // edge from elsewhere. 2958b818d7e98309125c6058c4ea72a7dc73b031db2Jim Grosbach PM.add(createSjLjEHPass(getTargetLowering())); 296af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling // FALLTHROUGH 2971b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::Dwarf: 29822efc18f12d8d5d0fa23b559121d211f4ea222f6Duncan Sands PM.add(createDwarfEHPass(this)); 2991b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 3001b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach case ExceptionHandling::None: 3011b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach PM.add(createLowerInvokePass(getTargetLowering())); 302af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling 303af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling // The lower invoke pass may create unreachable code. Remove it. 304af33b7b4a775073585f2037bf4cb56f1cd87d13cBill Wendling PM.add(createUnreachableBlockEliminationPass()); 3051b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach break; 3061b747ad8a0694b86e8d98a8b9a05ddfe74ec0cd3Jim Grosbach } 307b0f1e1780c736c62fb99e5824825d2a60a53b53bDuncan Sands 308522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCGP) 309c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner PM.add(createCodeGenPreparePass(getTargetLowering())); 310c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 311e9e6bdf27fca46dc9eca2ebdf73e03747d1859abBill Wendling PM.add(createStackProtectorPass(getTargetLowering())); 3122b58ce5ab4e22e796303d68fb246d4031cb5d4caBill Wendling 3138c64b9766e654079339ea7f3a2da152f18d00179Anton Korobeynikov addPreISel(PM, OptLevel); 3148c64b9766e654079339ea7f3a2da152f18d00179Anton Korobeynikov 315c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner if (PrintISelInput) 316f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar PM.add(createPrintFunctionPass("\n\n" 317f4db3a51c7d806f7dcef5d9625e7cdf7f122dca9Daniel Dunbar "*** Final LLVM Code input to ISel ***\n", 3182800eb1d30aea4177d6ea42adddd70e01ede8699David Greene &dbgs())); 319c8d288f8fa9e46199a29e1954550c980f184bd1cChris Lattner 3208772f5041ce8e98695655a72a54b952583630617Dan Gohman // All passes which modify the LLVM IR are now complete; run the verifier 3218772f5041ce8e98695655a72a54b952583630617Dan Gohman // to ensure that the IR is valid. 3228772f5041ce8e98695655a72a54b952583630617Dan Gohman if (!DisableVerify) 3238772f5041ce8e98695655a72a54b952583630617Dan Gohman PM.add(createVerifierPass()); 3248772f5041ce8e98695655a72a54b952583630617Dan Gohman 32502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman // Standard Lower-Level Passes. 326c92bb50a0cdecccfa53573df720d5893f83f615eJim Grosbach 32711d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // Install a MachineModuleInfo class, which is an immutable pass that holds 32811d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner // all the per-module stuff we're generating, including MCContext. 32911d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner MachineModuleInfo *MMI = new MachineModuleInfo(*getMCAsmInfo()); 33011d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner PM.add(MMI); 33111d53c129fc9c2a4510605ec0a1696f58750af52Chris Lattner OutContext = &MMI->getContext(); // Return the MCContext specifically by-ref. 33202dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 333ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman // Set up a MachineFunction for the rest of CodeGen to work on. 334ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman PM.add(new MachineFunctionAnalysis(*this, OptLevel)); 335ad2afc2a421a0e41603d5eee412d4d8c77e9bc1cDan Gohman 336dc756858f92a397ed30362ba8251fec56479735fDan Gohman // Enable FastISel with -fast, but allow that to be overridden. 337eb0d6abee36c274cf081948795f4675d8f33fc6fDan Gohman if (EnableFastISelOption == cl::BOU_TRUE || 33898a366d547772010e94609e4584489b3e5ce0043Bill Wendling (OptLevel == CodeGenOpt::None && EnableFastISelOption != cl::BOU_FALSE)) 339dc756858f92a397ed30362ba8251fec56479735fDan Gohman EnableFastISel = true; 340dc756858f92a397ed30362ba8251fec56479735fDan Gohman 34147877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Ask the target for an isel. 342be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling if (addInstSelector(PM, OptLevel)) 34347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner return true; 34404523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 34547877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Print the instruction selected machine code... 34673cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After Instruction Selection"); 3470f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 348668ac2fdae69ed358ecf690d6a07428e5a9ee2f7Dan Gohman // Expand pseudo-instructions emitted by isel. 349668ac2fdae69ed358ecf690d6a07428e5a9ee2f7Dan Gohman PM.add(createExpandPseudosPass()); 350668ac2fdae69ed358ecf690d6a07428e5a9ee2f7Dan Gohman 351bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson // Optimize PHIs before DCE: removing dead PHI cycles may make more 352bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson // instructions dead. 353bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson if (OptLevel != CodeGenOpt::None) 354bf9b221c006a99d6f117c1048412859d5637bcdeBob Wilson PM.add(createOptimizePHIsPass()); 35500a99a35840451a291eb61a192a750908a4073aeEvan Cheng 356a273442891ae20fd8192526132e3819ea9e5eda9Jim Grosbach // If the target requests it, assign local variables to stack slots relative 357a273442891ae20fd8192526132e3819ea9e5eda9Jim Grosbach // to one another and simplify frame index references where possible. 358a273442891ae20fd8192526132e3819ea9e5eda9Jim Grosbach PM.add(createLocalStackSlotAllocationPass()); 3593d72367d30c9ce6f387764a028763f7a366cc443Jim Grosbach 36002266e29f9250d74c5ec720aff23add3410ae920Bob Wilson if (OptLevel != CodeGenOpt::None) { 36184023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // With optimization, dead code should already be eliminated. However 36284023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // there is one known exception: lowered code for arguments that are only 36384023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // used by tail calls, where the tail calls reuse the incoming stack 36484023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman // arguments directly (see t11 in test/CodeGen/X86/sibcall.ll). 36584023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman PM.add(createDeadMachineInstructionElimPass()); 36673cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After codegen DCE pass"); 36784023e0fbefc406a4c611d3d64a10df5d3a97dd7Dan Gohman 3686cdb1abe4e4f6364649e7ef656589441754e82aeBill Wendling PM.add(createPeepholeOptimizerPass()); 369522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineLICM) 370522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineLICMPass()); 371fac4f1f1815b54346a805834a8c19d573ce8856cEvan Cheng PM.add(createMachineCSEPass()); 372522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (!DisableMachineSink) 373522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher PM.add(createMachineSinkingPass()); 37473cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After Machine LICM, CSE and Sinking passes"); 3758f0d99e463a2dcb5a40d14f0481a0e322bcf79e4Evan Cheng } 3760f940c95d4506f8d04fa2aeda8a79cadb3105fe3Bill Wendling 37779fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng // Pre-ra tail duplication. 378516ab96de3eb0c80ac9c4867cc2076ef4749625eBob Wilson if (OptLevel != CodeGenOpt::None && !DisableEarlyTailDup) { 37979fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng PM.add(createTailDuplicatePass(true)); 38073cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After Pre-RegAlloc TailDuplicate"); 38179fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng } 38279fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng 383b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov // Run pre-ra passes. 38448872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPreRegAlloc(PM, OptLevel)) 38573cf709a08d480c4315dc4aa9f644cf86494c4cfJakob Stoklund Olesen printAndVerify(PM, "After PreRegAlloc passes"); 386b013f5094c3bdb36472da996d63d5c0f75b6d4d3Anton Korobeynikov 3873f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Perform register allocation. 388700bfada6375546f82000bdd1b4cdbe87beebea5Jakob Stoklund Olesen PM.add(createRegisterAllocator(OptLevel)); 389499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After Register Allocation"); 3903f32d65912b4da23793dab618d981be2ce11c331Evan Cheng 391f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng // Perform stack slot coloring and post-ra machine LICM. 392f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng if (OptLevel != CodeGenOpt::None) { 3936248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // FIXME: Re-enable coloring with register when it's capable of adding 3946248fa45299a9e54aac84b3296c02c44ddec84e8Evan Cheng // kill markers. 395f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng if (!DisableSSC) 396f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng PM.add(createStackSlotColoringPass(false)); 397d94671a25e65918557a2c03c0fc12a60a5d138bfEvan Cheng 398d94671a25e65918557a2c03c0fc12a60a5d138bfEvan Cheng // Run post-ra machine LICM to hoist reloads / remats. 399f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng if (!DisablePostRAMachineLICM) 400f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng PM.add(createMachineLICMPass(false)); 401f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng 402f2b910922d80b254a06a62e350b1b6ae15f390b5Evan Cheng printAndVerify(PM, "After StackSlotColoring and postra Machine LICM"); 403499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 40402dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 4053f32d65912b4da23793dab618d981be2ce11c331Evan Cheng // Run post-ra passes. 40648872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen if (addPostRegAlloc(PM, OptLevel)) 407499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRegAlloc passes"); 40802dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 409ada779fb11eb411536aa8219a176ca0ce4d58fd1Christopher Lamb PM.add(createLowerSubregsPass()); 410499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After LowerSubregs"); 41104523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 41247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner // Insert prolog/epilog code. Eliminate abstract frame index references... 41347877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner PM.add(createPrologEpilogCodeInserter()); 414499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PrologEpilogCodeInserter"); 41502dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 416629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng // Run pre-sched2 passes. 417629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng if (addPreSched2(PM, OptLevel)) 418499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PreSched2 passes"); 419629adde69953fa53362d20ddb7b4e67ed78b8ae3Evan Cheng 420e7e7d0d7e39d0c7c659d26b97e8081fce0fcd749Dale Johannesen // Second pass scheduler. 421522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisablePostRA) { 422fa16354e0370fe884830286923352268b036737dEvan Cheng PM.add(createPostRAScheduler(OptLevel)); 423499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman printAndVerify(PM, "After PostRAScheduler"); 4245ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman } 4255ce0973f7f4d149f986d16d1a1f79b131fd70423Dan Gohman 42623b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman // Branch folding must be run after regalloc and prolog/epilog insertion. 427522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableBranchFold) { 428a597103c328e29fb763e7a4864bd7c29a588fc9dBob Wilson PM.add(createBranchFoldingPass(getEnableTailMergeDefault())); 429a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After BranchFolding"); 43048872e0d84b47769be6c13ae98bf88468b59d921Jakob Stoklund Olesen } 43123b0d490cdf27b2cba7b497aceeb5c79b0d0c9feDan Gohman 43215acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson // Tail duplication. 43315acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson if (OptLevel != CodeGenOpt::None && !DisableTailDuplicate) { 43479fc6f44b64f47b8a7d5e298c9f3c596b89fa88dEvan Cheng PM.add(createTailDuplicatePass(false)); 435a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After TailDuplicate"); 43615acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson } 43715acadde5f87703da5f36721a19c09a7e3f97f53Bob Wilson 43893f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen PM.add(createGCMachineCodeAnalysisPass()); 43902dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman 44093f96d00bf10299246ea726956ce84dcb4b9a59eGordon Henriksen if (PrintGCInfo) 4412800eb1d30aea4177d6ea42adddd70e01ede8699David Greene PM.add(createGCInfoPrinter(dbgs())); 44204523eab6bbc5d55a6e3f3296ddd583c8ad5ebb1Bill Wendling 443522c01ac6585604d53172daa970443d1fcaca3b1Eric Christopher if (OptLevel != CodeGenOpt::None && !DisableCodePlace) { 444499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman PM.add(createCodePlacementOptPass()); 445a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After CodePlacementOpt"); 446499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman } 447499a9377a3dcce85f39f04b2ab39c3dffa3025efDan Gohman 448517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng if (addPreEmitPass(PM, OptLevel)) 449a76e816844debe822c23932ef6a71c127d073063Jakob Stoklund Olesen printNoVerify(PM, "After PreEmit passes"); 450517e2556e39973ae65f58fad9865eef3a5a0966bEvan Cheng 45102dae4ba06a05d28b24b3c1b39d54de751271c95Dan Gohman return false; 45247877050e7ea02c3514497aba54eef1d4cee8452Chris Lattner} 453