| //===-- CommandFlags.cpp - Command Line Flags Interface ---------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains codegen-specific flags that are shared between different |
| // command line tools. The tools "llc" and "opt" both use this file to prevent |
| // flag duplication. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/CodeGen/CommandFlags.h" |
| #include "llvm/IR/Module.h" |
| #include "llvm/MC/SubtargetFeature.h" |
| #include "llvm/Support/CommandLine.h" |
| #include "llvm/Support/Host.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| |
| using namespace llvm; |
| |
| #define CGOPT(TY, NAME) \ |
| static cl::opt<TY> *NAME##View; \ |
| TY codegen::get##NAME() { \ |
| assert(NAME##View && "RegisterCodeGenFlags not created."); \ |
| return *NAME##View; \ |
| } |
| |
| #define CGLIST(TY, NAME) \ |
| static cl::list<TY> *NAME##View; \ |
| std::vector<TY> codegen::get##NAME() { \ |
| assert(NAME##View && "RegisterCodeGenFlags not created."); \ |
| return *NAME##View; \ |
| } |
| |
| #define CGOPT_EXP(TY, NAME) \ |
| CGOPT(TY, NAME) \ |
| Optional<TY> codegen::getExplicit##NAME() { \ |
| if (NAME##View->getNumOccurrences()) { \ |
| TY res = *NAME##View; \ |
| return res; \ |
| } \ |
| return None; \ |
| } |
| |
| CGOPT(std::string, MArch) |
| CGOPT(std::string, MCPU) |
| CGLIST(std::string, MAttrs) |
| CGOPT_EXP(Reloc::Model, RelocModel) |
| CGOPT(ThreadModel::Model, ThreadModel) |
| CGOPT_EXP(CodeModel::Model, CodeModel) |
| CGOPT(ExceptionHandling, ExceptionModel) |
| CGOPT_EXP(CodeGenFileType, FileType) |
| CGOPT(FramePointerKind, FramePointerUsage) |
| CGOPT(bool, EnableUnsafeFPMath) |
| CGOPT(bool, EnableNoInfsFPMath) |
| CGOPT(bool, EnableNoNaNsFPMath) |
| CGOPT(bool, EnableNoSignedZerosFPMath) |
| CGOPT(bool, EnableNoTrappingFPMath) |
| CGOPT(bool, EnableAIXExtendedAltivecABI) |
| CGOPT(DenormalMode::DenormalModeKind, DenormalFPMath) |
| CGOPT(DenormalMode::DenormalModeKind, DenormalFP32Math) |
| CGOPT(bool, EnableHonorSignDependentRoundingFPMath) |
| CGOPT(FloatABI::ABIType, FloatABIForCalls) |
| CGOPT(FPOpFusion::FPOpFusionMode, FuseFPOps) |
| CGOPT(SwiftAsyncFramePointerMode, SwiftAsyncFramePointer) |
| CGOPT(bool, DontPlaceZerosInBSS) |
| CGOPT(bool, EnableGuaranteedTailCallOpt) |
| CGOPT(bool, DisableTailCalls) |
| CGOPT(bool, StackSymbolOrdering) |
| CGOPT(bool, StackRealign) |
| CGOPT(std::string, TrapFuncName) |
| CGOPT(bool, UseCtors) |
| CGOPT(bool, RelaxELFRelocations) |
| CGOPT_EXP(bool, DataSections) |
| CGOPT_EXP(bool, FunctionSections) |
| CGOPT(bool, IgnoreXCOFFVisibility) |
| CGOPT(bool, XCOFFTracebackTable) |
| CGOPT(std::string, BBSections) |
| CGOPT(unsigned, TLSSize) |
| CGOPT(bool, EmulatedTLS) |
| CGOPT(bool, UniqueSectionNames) |
| CGOPT(bool, UniqueBasicBlockSectionNames) |
| CGOPT(EABI, EABIVersion) |
| CGOPT(DebuggerKind, DebuggerTuningOpt) |
| CGOPT(bool, EnableStackSizeSection) |
| CGOPT(bool, EnableAddrsig) |
| CGOPT(bool, EmitCallSiteInfo) |
| CGOPT(bool, EnableMachineFunctionSplitter) |
| CGOPT(bool, EnableDebugEntryValues) |
| CGOPT_EXP(bool, ValueTrackingVariableLocations) |
| CGOPT(bool, ForceDwarfFrameSection) |
| CGOPT(bool, XRayOmitFunctionIndex) |
| CGOPT(bool, DebugStrictDwarf) |
| CGOPT(unsigned, AlignLoops) |
| |
| codegen::RegisterCodeGenFlags::RegisterCodeGenFlags() { |
| #define CGBINDOPT(NAME) \ |
| do { \ |
| NAME##View = std::addressof(NAME); \ |
| } while (0) |
| |
| static cl::opt<std::string> MArch( |
| "march", cl::desc("Architecture to generate code for (see --version)")); |
| CGBINDOPT(MArch); |
| |
| static cl::opt<std::string> MCPU( |
| "mcpu", cl::desc("Target a specific cpu type (-mcpu=help for details)"), |
| cl::value_desc("cpu-name"), cl::init("")); |
| CGBINDOPT(MCPU); |
| |
| static cl::list<std::string> MAttrs( |
| "mattr", cl::CommaSeparated, |
| cl::desc("Target specific attributes (-mattr=help for details)"), |
| cl::value_desc("a1,+a2,-a3,...")); |
| CGBINDOPT(MAttrs); |
| |
| static cl::opt<Reloc::Model> RelocModel( |
| "relocation-model", cl::desc("Choose relocation model"), |
| cl::values( |
| clEnumValN(Reloc::Static, "static", "Non-relocatable code"), |
| clEnumValN(Reloc::PIC_, "pic", |
| "Fully relocatable, position independent code"), |
| clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic", |
| "Relocatable external references, non-relocatable code"), |
| clEnumValN( |
| Reloc::ROPI, "ropi", |
| "Code and read-only data relocatable, accessed PC-relative"), |
| clEnumValN( |
| Reloc::RWPI, "rwpi", |
| "Read-write data relocatable, accessed relative to static base"), |
| clEnumValN(Reloc::ROPI_RWPI, "ropi-rwpi", |
| "Combination of ropi and rwpi"))); |
| CGBINDOPT(RelocModel); |
| |
| static cl::opt<ThreadModel::Model> ThreadModel( |
| "thread-model", cl::desc("Choose threading model"), |
| cl::init(ThreadModel::POSIX), |
| cl::values( |
| clEnumValN(ThreadModel::POSIX, "posix", "POSIX thread model"), |
| clEnumValN(ThreadModel::Single, "single", "Single thread model"))); |
| CGBINDOPT(ThreadModel); |
| |
| static cl::opt<CodeModel::Model> CodeModel( |
| "code-model", cl::desc("Choose code model"), |
| cl::values(clEnumValN(CodeModel::Tiny, "tiny", "Tiny code model"), |
| clEnumValN(CodeModel::Small, "small", "Small code model"), |
| clEnumValN(CodeModel::Kernel, "kernel", "Kernel code model"), |
| clEnumValN(CodeModel::Medium, "medium", "Medium code model"), |
| clEnumValN(CodeModel::Large, "large", "Large code model"))); |
| CGBINDOPT(CodeModel); |
| |
| static cl::opt<ExceptionHandling> ExceptionModel( |
| "exception-model", cl::desc("exception model"), |
| cl::init(ExceptionHandling::None), |
| cl::values( |
| clEnumValN(ExceptionHandling::None, "default", |
| "default exception handling model"), |
| clEnumValN(ExceptionHandling::DwarfCFI, "dwarf", |
| "DWARF-like CFI based exception handling"), |
| clEnumValN(ExceptionHandling::SjLj, "sjlj", |
| "SjLj exception handling"), |
| clEnumValN(ExceptionHandling::ARM, "arm", "ARM EHABI exceptions"), |
| clEnumValN(ExceptionHandling::WinEH, "wineh", |
| "Windows exception model"), |
| clEnumValN(ExceptionHandling::Wasm, "wasm", |
| "WebAssembly exception handling"))); |
| CGBINDOPT(ExceptionModel); |
| |
| static cl::opt<CodeGenFileType> FileType( |
| "filetype", cl::init(CGFT_AssemblyFile), |
| cl::desc( |
| "Choose a file type (not all types are supported by all targets):"), |
| cl::values( |
| clEnumValN(CGFT_AssemblyFile, "asm", "Emit an assembly ('.s') file"), |
| clEnumValN(CGFT_ObjectFile, "obj", |
| "Emit a native object ('.o') file"), |
| clEnumValN(CGFT_Null, "null", |
| "Emit nothing, for performance testing"))); |
| CGBINDOPT(FileType); |
| |
| static cl::opt<FramePointerKind> FramePointerUsage( |
| "frame-pointer", |
| cl::desc("Specify frame pointer elimination optimization"), |
| cl::init(FramePointerKind::None), |
| cl::values( |
| clEnumValN(FramePointerKind::All, "all", |
| "Disable frame pointer elimination"), |
| clEnumValN(FramePointerKind::NonLeaf, "non-leaf", |
| "Disable frame pointer elimination for non-leaf frame"), |
| clEnumValN(FramePointerKind::None, "none", |
| "Enable frame pointer elimination"))); |
| CGBINDOPT(FramePointerUsage); |
| |
| static cl::opt<bool> EnableUnsafeFPMath( |
| "enable-unsafe-fp-math", |
| cl::desc("Enable optimizations that may decrease FP precision"), |
| cl::init(false)); |
| CGBINDOPT(EnableUnsafeFPMath); |
| |
| static cl::opt<bool> EnableNoInfsFPMath( |
| "enable-no-infs-fp-math", |
| cl::desc("Enable FP math optimizations that assume no +-Infs"), |
| cl::init(false)); |
| CGBINDOPT(EnableNoInfsFPMath); |
| |
| static cl::opt<bool> EnableNoNaNsFPMath( |
| "enable-no-nans-fp-math", |
| cl::desc("Enable FP math optimizations that assume no NaNs"), |
| cl::init(false)); |
| CGBINDOPT(EnableNoNaNsFPMath); |
| |
| static cl::opt<bool> EnableNoSignedZerosFPMath( |
| "enable-no-signed-zeros-fp-math", |
| cl::desc("Enable FP math optimizations that assume " |
| "the sign of 0 is insignificant"), |
| cl::init(false)); |
| CGBINDOPT(EnableNoSignedZerosFPMath); |
| |
| static cl::opt<bool> EnableNoTrappingFPMath( |
| "enable-no-trapping-fp-math", |
| cl::desc("Enable setting the FP exceptions build " |
| "attribute not to use exceptions"), |
| cl::init(false)); |
| CGBINDOPT(EnableNoTrappingFPMath); |
| |
| static const auto DenormFlagEnumOptions = |
| cl::values(clEnumValN(DenormalMode::IEEE, "ieee", |
| "IEEE 754 denormal numbers"), |
| clEnumValN(DenormalMode::PreserveSign, "preserve-sign", |
| "the sign of a flushed-to-zero number is preserved " |
| "in the sign of 0"), |
| clEnumValN(DenormalMode::PositiveZero, "positive-zero", |
| "denormals are flushed to positive zero")); |
| |
| // FIXME: Doesn't have way to specify separate input and output modes. |
| static cl::opt<DenormalMode::DenormalModeKind> DenormalFPMath( |
| "denormal-fp-math", |
| cl::desc("Select which denormal numbers the code is permitted to require"), |
| cl::init(DenormalMode::IEEE), |
| DenormFlagEnumOptions); |
| CGBINDOPT(DenormalFPMath); |
| |
| static cl::opt<DenormalMode::DenormalModeKind> DenormalFP32Math( |
| "denormal-fp-math-f32", |
| cl::desc("Select which denormal numbers the code is permitted to require for float"), |
| cl::init(DenormalMode::Invalid), |
| DenormFlagEnumOptions); |
| CGBINDOPT(DenormalFP32Math); |
| |
| static cl::opt<bool> EnableHonorSignDependentRoundingFPMath( |
| "enable-sign-dependent-rounding-fp-math", cl::Hidden, |
| cl::desc("Force codegen to assume rounding mode can change dynamically"), |
| cl::init(false)); |
| CGBINDOPT(EnableHonorSignDependentRoundingFPMath); |
| |
| static cl::opt<FloatABI::ABIType> FloatABIForCalls( |
| "float-abi", cl::desc("Choose float ABI type"), |
| cl::init(FloatABI::Default), |
| cl::values(clEnumValN(FloatABI::Default, "default", |
| "Target default float ABI type"), |
| clEnumValN(FloatABI::Soft, "soft", |
| "Soft float ABI (implied by -soft-float)"), |
| clEnumValN(FloatABI::Hard, "hard", |
| "Hard float ABI (uses FP registers)"))); |
| CGBINDOPT(FloatABIForCalls); |
| |
| static cl::opt<FPOpFusion::FPOpFusionMode> FuseFPOps( |
| "fp-contract", cl::desc("Enable aggressive formation of fused FP ops"), |
| cl::init(FPOpFusion::Standard), |
| cl::values( |
| clEnumValN(FPOpFusion::Fast, "fast", |
| "Fuse FP ops whenever profitable"), |
| clEnumValN(FPOpFusion::Standard, "on", "Only fuse 'blessed' FP ops."), |
| clEnumValN(FPOpFusion::Strict, "off", |
| "Only fuse FP ops when the result won't be affected."))); |
| CGBINDOPT(FuseFPOps); |
| |
| static cl::opt<SwiftAsyncFramePointerMode> SwiftAsyncFramePointer( |
| "swift-async-fp", |
| cl::desc("Determine when the Swift async frame pointer should be set"), |
| cl::init(SwiftAsyncFramePointerMode::Always), |
| cl::values(clEnumValN(SwiftAsyncFramePointerMode::DeploymentBased, "auto", |
| "Determine based on deployment target"), |
| clEnumValN(SwiftAsyncFramePointerMode::Always, "always", |
| "Always set the bit"), |
| clEnumValN(SwiftAsyncFramePointerMode::Never, "never", |
| "Never set the bit"))); |
| CGBINDOPT(SwiftAsyncFramePointer); |
| |
| static cl::opt<bool> DontPlaceZerosInBSS( |
| "nozero-initialized-in-bss", |
| cl::desc("Don't place zero-initialized symbols into bss section"), |
| cl::init(false)); |
| CGBINDOPT(DontPlaceZerosInBSS); |
| |
| static cl::opt<bool> EnableAIXExtendedAltivecABI( |
| "vec-extabi", cl::desc("Enable the AIX Extended Altivec ABI."), |
| cl::init(false)); |
| CGBINDOPT(EnableAIXExtendedAltivecABI); |
| |
| static cl::opt<bool> EnableGuaranteedTailCallOpt( |
| "tailcallopt", |
| cl::desc( |
| "Turn fastcc calls into tail calls by (potentially) changing ABI."), |
| cl::init(false)); |
| CGBINDOPT(EnableGuaranteedTailCallOpt); |
| |
| static cl::opt<bool> DisableTailCalls( |
| "disable-tail-calls", cl::desc("Never emit tail calls"), cl::init(false)); |
| CGBINDOPT(DisableTailCalls); |
| |
| static cl::opt<bool> StackSymbolOrdering( |
| "stack-symbol-ordering", cl::desc("Order local stack symbols."), |
| cl::init(true)); |
| CGBINDOPT(StackSymbolOrdering); |
| |
| static cl::opt<bool> StackRealign( |
| "stackrealign", |
| cl::desc("Force align the stack to the minimum alignment"), |
| cl::init(false)); |
| CGBINDOPT(StackRealign); |
| |
| static cl::opt<std::string> TrapFuncName( |
| "trap-func", cl::Hidden, |
| cl::desc("Emit a call to trap function rather than a trap instruction"), |
| cl::init("")); |
| CGBINDOPT(TrapFuncName); |
| |
| static cl::opt<bool> UseCtors("use-ctors", |
| cl::desc("Use .ctors instead of .init_array."), |
| cl::init(false)); |
| CGBINDOPT(UseCtors); |
| |
| static cl::opt<bool> RelaxELFRelocations( |
| "relax-elf-relocations", |
| cl::desc( |
| "Emit GOTPCRELX/REX_GOTPCRELX instead of GOTPCREL on x86-64 ELF"), |
| cl::init(false)); |
| CGBINDOPT(RelaxELFRelocations); |
| |
| static cl::opt<bool> DataSections( |
| "data-sections", cl::desc("Emit data into separate sections"), |
| cl::init(false)); |
| CGBINDOPT(DataSections); |
| |
| static cl::opt<bool> FunctionSections( |
| "function-sections", cl::desc("Emit functions into separate sections"), |
| cl::init(false)); |
| CGBINDOPT(FunctionSections); |
| |
| static cl::opt<bool> IgnoreXCOFFVisibility( |
| "ignore-xcoff-visibility", |
| cl::desc("Not emit the visibility attribute for asm in AIX OS or give " |
| "all symbols 'unspecified' visibility in XCOFF object file"), |
| cl::init(false)); |
| CGBINDOPT(IgnoreXCOFFVisibility); |
| |
| static cl::opt<bool> XCOFFTracebackTable( |
| "xcoff-traceback-table", cl::desc("Emit the XCOFF traceback table"), |
| cl::init(true)); |
| CGBINDOPT(XCOFFTracebackTable); |
| |
| static cl::opt<std::string> BBSections( |
| "basic-block-sections", |
| cl::desc("Emit basic blocks into separate sections"), |
| cl::value_desc("all | <function list (file)> | labels | none"), |
| cl::init("none")); |
| CGBINDOPT(BBSections); |
| |
| static cl::opt<unsigned> TLSSize( |
| "tls-size", cl::desc("Bit size of immediate TLS offsets"), cl::init(0)); |
| CGBINDOPT(TLSSize); |
| |
| static cl::opt<bool> EmulatedTLS( |
| "emulated-tls", cl::desc("Use emulated TLS model"), cl::init(false)); |
| CGBINDOPT(EmulatedTLS); |
| |
| static cl::opt<bool> UniqueSectionNames( |
| "unique-section-names", cl::desc("Give unique names to every section"), |
| cl::init(true)); |
| CGBINDOPT(UniqueSectionNames); |
| |
| static cl::opt<bool> UniqueBasicBlockSectionNames( |
| "unique-basic-block-section-names", |
| cl::desc("Give unique names to every basic block section"), |
| cl::init(false)); |
| CGBINDOPT(UniqueBasicBlockSectionNames); |
| |
| static cl::opt<EABI> EABIVersion( |
| "meabi", cl::desc("Set EABI type (default depends on triple):"), |
| cl::init(EABI::Default), |
| cl::values( |
| clEnumValN(EABI::Default, "default", "Triple default EABI version"), |
| clEnumValN(EABI::EABI4, "4", "EABI version 4"), |
| clEnumValN(EABI::EABI5, "5", "EABI version 5"), |
| clEnumValN(EABI::GNU, "gnu", "EABI GNU"))); |
| CGBINDOPT(EABIVersion); |
| |
| static cl::opt<DebuggerKind> DebuggerTuningOpt( |
| "debugger-tune", cl::desc("Tune debug info for a particular debugger"), |
| cl::init(DebuggerKind::Default), |
| cl::values( |
| clEnumValN(DebuggerKind::GDB, "gdb", "gdb"), |
| clEnumValN(DebuggerKind::LLDB, "lldb", "lldb"), |
| clEnumValN(DebuggerKind::DBX, "dbx", "dbx"), |
| clEnumValN(DebuggerKind::SCE, "sce", "SCE targets (e.g. PS4)"))); |
| CGBINDOPT(DebuggerTuningOpt); |
| |
| static cl::opt<bool> EnableStackSizeSection( |
| "stack-size-section", |
| cl::desc("Emit a section containing stack size metadata"), |
| cl::init(false)); |
| CGBINDOPT(EnableStackSizeSection); |
| |
| static cl::opt<bool> EnableAddrsig( |
| "addrsig", cl::desc("Emit an address-significance table"), |
| cl::init(false)); |
| CGBINDOPT(EnableAddrsig); |
| |
| static cl::opt<bool> EmitCallSiteInfo( |
| "emit-call-site-info", |
| cl::desc( |
| "Emit call site debug information, if debug information is enabled."), |
| cl::init(false)); |
| CGBINDOPT(EmitCallSiteInfo); |
| |
| static cl::opt<bool> EnableDebugEntryValues( |
| "debug-entry-values", |
| cl::desc("Enable debug info for the debug entry values."), |
| cl::init(false)); |
| CGBINDOPT(EnableDebugEntryValues); |
| |
| static cl::opt<bool> ValueTrackingVariableLocations( |
| "experimental-debug-variable-locations", |
| cl::desc("Use experimental new value-tracking variable locations"), |
| cl::init(false)); |
| CGBINDOPT(ValueTrackingVariableLocations); |
| |
| static cl::opt<bool> EnableMachineFunctionSplitter( |
| "split-machine-functions", |
| cl::desc("Split out cold basic blocks from machine functions based on " |
| "profile information"), |
| cl::init(false)); |
| CGBINDOPT(EnableMachineFunctionSplitter); |
| |
| static cl::opt<bool> ForceDwarfFrameSection( |
| "force-dwarf-frame-section", |
| cl::desc("Always emit a debug frame section."), cl::init(false)); |
| CGBINDOPT(ForceDwarfFrameSection); |
| |
| static cl::opt<bool> XRayOmitFunctionIndex( |
| "no-xray-index", cl::desc("Don't emit xray_fn_idx section"), |
| cl::init(false)); |
| CGBINDOPT(XRayOmitFunctionIndex); |
| |
| static cl::opt<bool> DebugStrictDwarf( |
| "strict-dwarf", cl::desc("use strict dwarf"), cl::init(false)); |
| CGBINDOPT(DebugStrictDwarf); |
| |
| static cl::opt<unsigned> AlignLoops("align-loops", |
| cl::desc("Default alignment for loops")); |
| CGBINDOPT(AlignLoops); |
| |
| #undef CGBINDOPT |
| |
| mc::RegisterMCTargetOptionsFlags(); |
| } |
| |
| llvm::BasicBlockSection |
| codegen::getBBSectionsMode(llvm::TargetOptions &Options) { |
| if (getBBSections() == "all") |
| return BasicBlockSection::All; |
| else if (getBBSections() == "labels") |
| return BasicBlockSection::Labels; |
| else if (getBBSections() == "none") |
| return BasicBlockSection::None; |
| else { |
| ErrorOr<std::unique_ptr<MemoryBuffer>> MBOrErr = |
| MemoryBuffer::getFile(getBBSections()); |
| if (!MBOrErr) { |
| errs() << "Error loading basic block sections function list file: " |
| << MBOrErr.getError().message() << "\n"; |
| } else { |
| Options.BBSectionsFuncListBuf = std::move(*MBOrErr); |
| } |
| return BasicBlockSection::List; |
| } |
| } |
| |
| // Common utility function tightly tied to the options listed here. Initializes |
| // a TargetOptions object with CodeGen flags and returns it. |
| TargetOptions |
| codegen::InitTargetOptionsFromCodeGenFlags(const Triple &TheTriple) { |
| TargetOptions Options; |
| Options.AllowFPOpFusion = getFuseFPOps(); |
| Options.UnsafeFPMath = getEnableUnsafeFPMath(); |
| Options.NoInfsFPMath = getEnableNoInfsFPMath(); |
| Options.NoNaNsFPMath = getEnableNoNaNsFPMath(); |
| Options.NoSignedZerosFPMath = getEnableNoSignedZerosFPMath(); |
| Options.NoTrappingFPMath = getEnableNoTrappingFPMath(); |
| |
| DenormalMode::DenormalModeKind DenormKind = getDenormalFPMath(); |
| |
| // FIXME: Should have separate input and output flags |
| Options.setFPDenormalMode(DenormalMode(DenormKind, DenormKind)); |
| |
| Options.HonorSignDependentRoundingFPMathOption = |
| getEnableHonorSignDependentRoundingFPMath(); |
| if (getFloatABIForCalls() != FloatABI::Default) |
| Options.FloatABIType = getFloatABIForCalls(); |
| Options.EnableAIXExtendedAltivecABI = getEnableAIXExtendedAltivecABI(); |
| Options.NoZerosInBSS = getDontPlaceZerosInBSS(); |
| Options.GuaranteedTailCallOpt = getEnableGuaranteedTailCallOpt(); |
| Options.StackSymbolOrdering = getStackSymbolOrdering(); |
| Options.UseInitArray = !getUseCtors(); |
| Options.RelaxELFRelocations = getRelaxELFRelocations(); |
| Options.DataSections = |
| getExplicitDataSections().getValueOr(TheTriple.hasDefaultDataSections()); |
| Options.FunctionSections = getFunctionSections(); |
| Options.IgnoreXCOFFVisibility = getIgnoreXCOFFVisibility(); |
| Options.XCOFFTracebackTable = getXCOFFTracebackTable(); |
| Options.BBSections = getBBSectionsMode(Options); |
| Options.UniqueSectionNames = getUniqueSectionNames(); |
| Options.UniqueBasicBlockSectionNames = getUniqueBasicBlockSectionNames(); |
| Options.TLSSize = getTLSSize(); |
| Options.EmulatedTLS = getEmulatedTLS(); |
| Options.ExplicitEmulatedTLS = EmulatedTLSView->getNumOccurrences() > 0; |
| Options.ExceptionModel = getExceptionModel(); |
| Options.EmitStackSizeSection = getEnableStackSizeSection(); |
| Options.EnableMachineFunctionSplitter = getEnableMachineFunctionSplitter(); |
| Options.EmitAddrsig = getEnableAddrsig(); |
| Options.EmitCallSiteInfo = getEmitCallSiteInfo(); |
| Options.EnableDebugEntryValues = getEnableDebugEntryValues(); |
| Options.ForceDwarfFrameSection = getForceDwarfFrameSection(); |
| Options.XRayOmitFunctionIndex = getXRayOmitFunctionIndex(); |
| Options.DebugStrictDwarf = getDebugStrictDwarf(); |
| Options.LoopAlignment = getAlignLoops(); |
| |
| if (auto Opt = getExplicitValueTrackingVariableLocations()) |
| Options.ValueTrackingVariableLocations = *Opt; |
| else |
| Options.ValueTrackingVariableLocations = |
| getDefaultValueTrackingVariableLocations(TheTriple); |
| |
| Options.MCOptions = mc::InitMCTargetOptionsFromFlags(); |
| |
| Options.ThreadModel = getThreadModel(); |
| Options.EABIVersion = getEABIVersion(); |
| Options.DebuggerTuning = getDebuggerTuningOpt(); |
| Options.SwiftAsyncFramePointer = getSwiftAsyncFramePointer(); |
| return Options; |
| } |
| |
| std::string codegen::getCPUStr() { |
| // If user asked for the 'native' CPU, autodetect here. If autodection fails, |
| // this will set the CPU to an empty string which tells the target to |
| // pick a basic default. |
| if (getMCPU() == "native") |
| return std::string(sys::getHostCPUName()); |
| |
| return getMCPU(); |
| } |
| |
| std::string codegen::getFeaturesStr() { |
| SubtargetFeatures Features; |
| |
| // If user asked for the 'native' CPU, we need to autodetect features. |
| // This is necessary for x86 where the CPU might not support all the |
| // features the autodetected CPU name lists in the target. For example, |
| // not all Sandybridge processors support AVX. |
| if (getMCPU() == "native") { |
| StringMap<bool> HostFeatures; |
| if (sys::getHostCPUFeatures(HostFeatures)) |
| for (auto &F : HostFeatures) |
| Features.AddFeature(F.first(), F.second); |
| } |
| |
| for (auto const &MAttr : getMAttrs()) |
| Features.AddFeature(MAttr); |
| |
| return Features.getString(); |
| } |
| |
| std::vector<std::string> codegen::getFeatureList() { |
| SubtargetFeatures Features; |
| |
| // If user asked for the 'native' CPU, we need to autodetect features. |
| // This is necessary for x86 where the CPU might not support all the |
| // features the autodetected CPU name lists in the target. For example, |
| // not all Sandybridge processors support AVX. |
| if (getMCPU() == "native") { |
| StringMap<bool> HostFeatures; |
| if (sys::getHostCPUFeatures(HostFeatures)) |
| for (auto &F : HostFeatures) |
| Features.AddFeature(F.first(), F.second); |
| } |
| |
| for (auto const &MAttr : getMAttrs()) |
| Features.AddFeature(MAttr); |
| |
| return Features.getFeatures(); |
| } |
| |
| void codegen::renderBoolStringAttr(AttrBuilder &B, StringRef Name, bool Val) { |
| B.addAttribute(Name, Val ? "true" : "false"); |
| } |
| |
| #define HANDLE_BOOL_ATTR(CL, AttrName) \ |
| do { \ |
| if (CL->getNumOccurrences() > 0 && !F.hasFnAttribute(AttrName)) \ |
| renderBoolStringAttr(NewAttrs, AttrName, *CL); \ |
| } while (0) |
| |
| /// Set function attributes of function \p F based on CPU, Features, and command |
| /// line flags. |
| void codegen::setFunctionAttributes(StringRef CPU, StringRef Features, |
| Function &F) { |
| auto &Ctx = F.getContext(); |
| AttributeList Attrs = F.getAttributes(); |
| AttrBuilder NewAttrs; |
| |
| if (!CPU.empty() && !F.hasFnAttribute("target-cpu")) |
| NewAttrs.addAttribute("target-cpu", CPU); |
| if (!Features.empty()) { |
| // Append the command line features to any that are already on the function. |
| StringRef OldFeatures = |
| F.getFnAttribute("target-features").getValueAsString(); |
| if (OldFeatures.empty()) |
| NewAttrs.addAttribute("target-features", Features); |
| else { |
| SmallString<256> Appended(OldFeatures); |
| Appended.push_back(','); |
| Appended.append(Features); |
| NewAttrs.addAttribute("target-features", Appended); |
| } |
| } |
| if (FramePointerUsageView->getNumOccurrences() > 0 && |
| !F.hasFnAttribute("frame-pointer")) { |
| if (getFramePointerUsage() == FramePointerKind::All) |
| NewAttrs.addAttribute("frame-pointer", "all"); |
| else if (getFramePointerUsage() == FramePointerKind::NonLeaf) |
| NewAttrs.addAttribute("frame-pointer", "non-leaf"); |
| else if (getFramePointerUsage() == FramePointerKind::None) |
| NewAttrs.addAttribute("frame-pointer", "none"); |
| } |
| if (DisableTailCallsView->getNumOccurrences() > 0) |
| NewAttrs.addAttribute("disable-tail-calls", |
| toStringRef(getDisableTailCalls())); |
| if (getStackRealign()) |
| NewAttrs.addAttribute("stackrealign"); |
| |
| HANDLE_BOOL_ATTR(EnableUnsafeFPMathView, "unsafe-fp-math"); |
| HANDLE_BOOL_ATTR(EnableNoInfsFPMathView, "no-infs-fp-math"); |
| HANDLE_BOOL_ATTR(EnableNoNaNsFPMathView, "no-nans-fp-math"); |
| HANDLE_BOOL_ATTR(EnableNoSignedZerosFPMathView, "no-signed-zeros-fp-math"); |
| |
| if (DenormalFPMathView->getNumOccurrences() > 0 && |
| !F.hasFnAttribute("denormal-fp-math")) { |
| DenormalMode::DenormalModeKind DenormKind = getDenormalFPMath(); |
| |
| // FIXME: Command line flag should expose separate input/output modes. |
| NewAttrs.addAttribute("denormal-fp-math", |
| DenormalMode(DenormKind, DenormKind).str()); |
| } |
| |
| if (DenormalFP32MathView->getNumOccurrences() > 0 && |
| !F.hasFnAttribute("denormal-fp-math-f32")) { |
| // FIXME: Command line flag should expose separate input/output modes. |
| DenormalMode::DenormalModeKind DenormKind = getDenormalFP32Math(); |
| |
| NewAttrs.addAttribute( |
| "denormal-fp-math-f32", |
| DenormalMode(DenormKind, DenormKind).str()); |
| } |
| |
| if (TrapFuncNameView->getNumOccurrences() > 0) |
| for (auto &B : F) |
| for (auto &I : B) |
| if (auto *Call = dyn_cast<CallInst>(&I)) |
| if (const auto *F = Call->getCalledFunction()) |
| if (F->getIntrinsicID() == Intrinsic::debugtrap || |
| F->getIntrinsicID() == Intrinsic::trap) |
| Call->addFnAttr( |
| Attribute::get(Ctx, "trap-func-name", getTrapFuncName())); |
| |
| // Let NewAttrs override Attrs. |
| F.setAttributes(Attrs.addFnAttributes(Ctx, NewAttrs)); |
| } |
| |
| /// Set function attributes of functions in Module M based on CPU, |
| /// Features, and command line flags. |
| void codegen::setFunctionAttributes(StringRef CPU, StringRef Features, |
| Module &M) { |
| for (Function &F : M) |
| setFunctionAttributes(CPU, Features, F); |
| } |
| |
| bool codegen::getDefaultValueTrackingVariableLocations(const llvm::Triple &T) { |
| if (T.getArch() == llvm::Triple::x86_64) |
| return true; |
| return false; |
| } |
