Revert "TargetMachine: Merge TargetMachine and LLVMTargetMachine"
Reverting to investigate layering effects of MCJIT not linking
libCodeGen but using TargetMachine::getNameWithPrefix() breaking the
lldb bots.
This reverts commit r315633.
llvm-svn: 315637
diff --git a/llvm/lib/CodeGen/LLVMTargetMachine.cpp b/llvm/lib/CodeGen/LLVMTargetMachine.cpp
new file mode 100644
index 0000000..e829409f
--- /dev/null
+++ b/llvm/lib/CodeGen/LLVMTargetMachine.cpp
@@ -0,0 +1,259 @@
+//===-- LLVMTargetMachine.cpp - Implement the LLVMTargetMachine class -----===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the LLVMTargetMachine class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Analysis/Passes.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/BasicTTIImpl.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/CodeGen/Passes.h"
+#include "llvm/CodeGen/TargetPassConfig.h"
+#include "llvm/IR/IRPrintingPasses.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/Verifier.h"
+#include "llvm/MC/MCAsmBackend.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetOptions.h"
+#include "llvm/Transforms/Scalar.h"
+using namespace llvm;
+
+void LLVMTargetMachine::initAsmInfo() {
+ MRI = TheTarget.createMCRegInfo(getTargetTriple().str());
+ MII = TheTarget.createMCInstrInfo();
+ // FIXME: Having an MCSubtargetInfo on the target machine is a hack due
+ // to some backends having subtarget feature dependent module level
+ // code generation. This is similar to the hack in the AsmPrinter for
+ // module level assembly etc.
+ STI = TheTarget.createMCSubtargetInfo(getTargetTriple().str(), getTargetCPU(),
+ getTargetFeatureString());
+
+ MCAsmInfo *TmpAsmInfo =
+ TheTarget.createMCAsmInfo(*MRI, getTargetTriple().str());
+ // TargetSelect.h moved to a different directory between LLVM 2.9 and 3.0,
+ // and if the old one gets included then MCAsmInfo will be NULL and
+ // we'll crash later.
+ // Provide the user with a useful error message about what's wrong.
+ assert(TmpAsmInfo && "MCAsmInfo not initialized. "
+ "Make sure you include the correct TargetSelect.h"
+ "and that InitializeAllTargetMCs() is being invoked!");
+
+ if (Options.DisableIntegratedAS)
+ TmpAsmInfo->setUseIntegratedAssembler(false);
+
+ TmpAsmInfo->setPreserveAsmComments(Options.MCOptions.PreserveAsmComments);
+
+ TmpAsmInfo->setCompressDebugSections(Options.CompressDebugSections);
+
+ TmpAsmInfo->setRelaxELFRelocations(Options.RelaxELFRelocations);
+
+ if (Options.ExceptionModel != ExceptionHandling::None)
+ TmpAsmInfo->setExceptionsType(Options.ExceptionModel);
+
+ AsmInfo = TmpAsmInfo;
+}
+
+LLVMTargetMachine::LLVMTargetMachine(const Target &T,
+ StringRef DataLayoutString,
+ const Triple &TT, StringRef CPU,
+ StringRef FS, const TargetOptions &Options,
+ Reloc::Model RM, CodeModel::Model CM,
+ CodeGenOpt::Level OL)
+ : TargetMachine(T, DataLayoutString, TT, CPU, FS, Options) {
+ this->RM = RM;
+ this->CMModel = CM;
+ this->OptLevel = OL;
+}
+
+TargetIRAnalysis LLVMTargetMachine::getTargetIRAnalysis() {
+ return TargetIRAnalysis([this](const Function &F) {
+ return TargetTransformInfo(BasicTTIImpl(this, F));
+ });
+}
+
+/// addPassesToX helper drives creation and initialization of TargetPassConfig.
+static MCContext *
+addPassesToGenerateCode(LLVMTargetMachine *TM, PassManagerBase &PM,
+ bool DisableVerify, bool &WillCompleteCodeGenPipeline,
+ raw_pwrite_stream &Out, MachineModuleInfo *MMI) {
+ // Targets may override createPassConfig to provide a target-specific
+ // subclass.
+ TargetPassConfig *PassConfig = TM->createPassConfig(PM);
+ // Set PassConfig options provided by TargetMachine.
+ PassConfig->setDisableVerify(DisableVerify);
+ WillCompleteCodeGenPipeline = PassConfig->willCompleteCodeGenPipeline();
+ PM.add(PassConfig);
+ if (!MMI)
+ MMI = new MachineModuleInfo(TM);
+ PM.add(MMI);
+
+ if (PassConfig->addISelPasses())
+ return nullptr;
+ PassConfig->addMachinePasses();
+ PassConfig->setInitialized();
+ if (!WillCompleteCodeGenPipeline)
+ PM.add(createPrintMIRPass(Out));
+
+ return &MMI->getContext();
+}
+
+bool LLVMTargetMachine::addAsmPrinter(PassManagerBase &PM,
+ raw_pwrite_stream &Out, CodeGenFileType FileType,
+ MCContext &Context) {
+ if (Options.MCOptions.MCSaveTempLabels)
+ Context.setAllowTemporaryLabels(false);
+
+ const MCSubtargetInfo &STI = *getMCSubtargetInfo();
+ const MCAsmInfo &MAI = *getMCAsmInfo();
+ const MCRegisterInfo &MRI = *getMCRegisterInfo();
+ const MCInstrInfo &MII = *getMCInstrInfo();
+
+ std::unique_ptr<MCStreamer> AsmStreamer;
+
+ switch (FileType) {
+ case CGFT_AssemblyFile: {
+ MCInstPrinter *InstPrinter = getTarget().createMCInstPrinter(
+ getTargetTriple(), MAI.getAssemblerDialect(), MAI, MII, MRI);
+
+ // Create a code emitter if asked to show the encoding.
+ MCCodeEmitter *MCE = nullptr;
+ if (Options.MCOptions.ShowMCEncoding)
+ MCE = getTarget().createMCCodeEmitter(MII, MRI, Context);
+
+ MCAsmBackend *MAB =
+ getTarget().createMCAsmBackend(MRI, getTargetTriple().str(), TargetCPU,
+ Options.MCOptions);
+ auto FOut = llvm::make_unique<formatted_raw_ostream>(Out);
+ MCStreamer *S = getTarget().createAsmStreamer(
+ Context, std::move(FOut), Options.MCOptions.AsmVerbose,
+ Options.MCOptions.MCUseDwarfDirectory, InstPrinter, MCE, MAB,
+ Options.MCOptions.ShowMCInst);
+ AsmStreamer.reset(S);
+ break;
+ }
+ case CGFT_ObjectFile: {
+ // Create the code emitter for the target if it exists. If not, .o file
+ // emission fails.
+ MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(MII, MRI, Context);
+ MCAsmBackend *MAB =
+ getTarget().createMCAsmBackend(MRI, getTargetTriple().str(), TargetCPU,
+ Options.MCOptions);
+ if (!MCE || !MAB)
+ return true;
+
+ // Don't waste memory on names of temp labels.
+ Context.setUseNamesOnTempLabels(false);
+
+ Triple T(getTargetTriple().str());
+ AsmStreamer.reset(getTarget().createMCObjectStreamer(
+ T, Context, std::unique_ptr<MCAsmBackend>(MAB), Out,
+ std::unique_ptr<MCCodeEmitter>(MCE), STI, Options.MCOptions.MCRelaxAll,
+ Options.MCOptions.MCIncrementalLinkerCompatible,
+ /*DWARFMustBeAtTheEnd*/ true));
+ break;
+ }
+ case CGFT_Null:
+ // The Null output is intended for use for performance analysis and testing,
+ // not real users.
+ AsmStreamer.reset(getTarget().createNullStreamer(Context));
+ break;
+ }
+
+ // Create the AsmPrinter, which takes ownership of AsmStreamer if successful.
+ FunctionPass *Printer =
+ getTarget().createAsmPrinter(*this, std::move(AsmStreamer));
+ if (!Printer)
+ return true;
+
+ PM.add(Printer);
+ return false;
+}
+
+bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
+ raw_pwrite_stream &Out,
+ CodeGenFileType FileType,
+ bool DisableVerify,
+ MachineModuleInfo *MMI) {
+ // Add common CodeGen passes.
+ bool WillCompleteCodeGenPipeline = true;
+ MCContext *Context = addPassesToGenerateCode(
+ this, PM, DisableVerify, WillCompleteCodeGenPipeline, Out, MMI);
+ if (!Context)
+ return true;
+
+ if (WillCompleteCodeGenPipeline && addAsmPrinter(PM, Out, FileType, *Context))
+ return true;
+
+ PM.add(createFreeMachineFunctionPass());
+ return false;
+}
+
+/// addPassesToEmitMC - Add passes to the specified pass manager to get
+/// machine code emitted with the MCJIT. This method returns true if machine
+/// code is not supported. It fills the MCContext Ctx pointer which can be
+/// used to build custom MCStreamer.
+///
+bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM, MCContext *&Ctx,
+ raw_pwrite_stream &Out,
+ bool DisableVerify) {
+ // Add common CodeGen passes.
+ bool WillCompleteCodeGenPipeline = true;
+ Ctx = addPassesToGenerateCode(this, PM, DisableVerify,
+ WillCompleteCodeGenPipeline, Out,
+ /*MachineModuleInfo*/ nullptr);
+ if (!Ctx)
+ return true;
+ assert(WillCompleteCodeGenPipeline && "CodeGen pipeline has been altered");
+
+ if (Options.MCOptions.MCSaveTempLabels)
+ Ctx->setAllowTemporaryLabels(false);
+
+ // Create the code emitter for the target if it exists. If not, .o file
+ // emission fails.
+ const MCRegisterInfo &MRI = *getMCRegisterInfo();
+ MCCodeEmitter *MCE =
+ getTarget().createMCCodeEmitter(*getMCInstrInfo(), MRI, *Ctx);
+ MCAsmBackend *MAB =
+ getTarget().createMCAsmBackend(MRI, getTargetTriple().str(), TargetCPU,
+ Options.MCOptions);
+ if (!MCE || !MAB)
+ return true;
+
+ const Triple &T = getTargetTriple();
+ const MCSubtargetInfo &STI = *getMCSubtargetInfo();
+ std::unique_ptr<MCStreamer> AsmStreamer(getTarget().createMCObjectStreamer(
+ T, *Ctx, std::unique_ptr<MCAsmBackend>(MAB), Out,
+ std::unique_ptr<MCCodeEmitter>(MCE), STI, Options.MCOptions.MCRelaxAll,
+ Options.MCOptions.MCIncrementalLinkerCompatible,
+ /*DWARFMustBeAtTheEnd*/ true));
+
+ // Create the AsmPrinter, which takes ownership of AsmStreamer if successful.
+ FunctionPass *Printer =
+ getTarget().createAsmPrinter(*this, std::move(AsmStreamer));
+ if (!Printer)
+ return true;
+
+ PM.add(Printer);
+ PM.add(createFreeMachineFunctionPass());
+
+ return false; // success!
+}