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//===-- PTXTargetMachine.cpp - Define TargetMachine for PTX ---------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Top-level implementation for the PTX target.
//
//===----------------------------------------------------------------------===//
#include "PTXTargetMachine.h"
#include "PTX.h"
#include "llvm/PassManager.h"
#include "llvm/Analysis/Passes.h"
#include "llvm/Analysis/Verifier.h"
#include "llvm/Assembly/PrintModulePass.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineFunctionAnalysis.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Transforms/Scalar.h"
using namespace llvm;
namespace llvm {
MCStreamer *createPTXAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
bool isVerboseAsm, bool useLoc,
bool useCFI, bool useDwarfDirectory,
MCInstPrinter *InstPrint,
MCCodeEmitter *CE,
MCAsmBackend *MAB,
bool ShowInst);
}
extern "C" void LLVMInitializePTXTarget() {
RegisterTargetMachine<PTX32TargetMachine> X(ThePTX32Target);
RegisterTargetMachine<PTX64TargetMachine> Y(ThePTX64Target);
TargetRegistry::RegisterAsmStreamer(ThePTX32Target, createPTXAsmStreamer);
TargetRegistry::RegisterAsmStreamer(ThePTX64Target, createPTXAsmStreamer);
}
namespace {
const char* DataLayout32 =
"e-p:32:32-i64:32:32-f64:32:32-v128:32:128-v64:32:64-n32:64";
const char* DataLayout64 =
"e-p:64:64-i64:32:32-f64:32:32-v128:32:128-v64:32:64-n32:64";
}
// DataLayout and FrameLowering are filled with dummy data
PTXTargetMachine::PTXTargetMachine(const Target &T,
StringRef TT, StringRef CPU, StringRef FS,
const TargetOptions &Options,
Reloc::Model RM, CodeModel::Model CM,
CodeGenOpt::Level OL,
bool is64Bit)
: LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
DataLayout(is64Bit ? DataLayout64 : DataLayout32),
Subtarget(TT, CPU, FS, is64Bit),
FrameLowering(Subtarget),
InstrInfo(*this),
TSInfo(*this),
TLInfo(*this) {
}
void PTX32TargetMachine::anchor() { }
PTX32TargetMachine::PTX32TargetMachine(const Target &T, StringRef TT,
StringRef CPU, StringRef FS,
const TargetOptions &Options,
Reloc::Model RM, CodeModel::Model CM,
CodeGenOpt::Level OL)
: PTXTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL, false) {
}
void PTX64TargetMachine::anchor() { }
PTX64TargetMachine::PTX64TargetMachine(const Target &T, StringRef TT,
StringRef CPU, StringRef FS,
const TargetOptions &Options,
Reloc::Model RM, CodeModel::Model CM,
CodeGenOpt::Level OL)
: PTXTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL, true) {
}
namespace llvm {
/// PTX Code Generator Pass Configuration Options.
class PTXPassConfig : public TargetPassConfig {
public:
PTXPassConfig(PTXTargetMachine *TM, PassManagerBase &PM)
: TargetPassConfig(TM, PM) {}
PTXTargetMachine &getPTXTargetMachine() const {
return getTM<PTXTargetMachine>();
}
bool addInstSelector();
FunctionPass *createTargetRegisterAllocator(bool);
void addOptimizedRegAlloc(FunctionPass *RegAllocPass);
bool addPostRegAlloc();
void addMachineLateOptimization();
bool addPreEmitPass();
};
} // namespace
TargetPassConfig *PTXTargetMachine::createPassConfig(PassManagerBase &PM) {
PTXPassConfig *PassConfig = new PTXPassConfig(this, PM);
PassConfig->disablePass(PrologEpilogCodeInserterID);
return PassConfig;
}
bool PTXPassConfig::addInstSelector() {
PM->add(createPTXISelDag(getPTXTargetMachine(), getOptLevel()));
return false;
}
FunctionPass *PTXPassConfig::createTargetRegisterAllocator(bool /*Optimized*/) {
return createPTXRegisterAllocator();
}
// Modify the optimized compilation path to bypass optimized register alloction.
void PTXPassConfig::addOptimizedRegAlloc(FunctionPass *RegAllocPass) {
addFastRegAlloc(RegAllocPass);
}
bool PTXPassConfig::addPostRegAlloc() {
// PTXMFInfoExtract must after register allocation!
//PM->add(createPTXMFInfoExtract(getPTXTargetMachine()));
return false;
}
/// Add passes that optimize machine instructions after register allocation.
void PTXPassConfig::addMachineLateOptimization() {
if (addPass(BranchFolderPassID) != &NoPassID)
printAndVerify("After BranchFolding");
if (addPass(TailDuplicateID) != &NoPassID)
printAndVerify("After TailDuplicate");
}
bool PTXPassConfig::addPreEmitPass() {
PM->add(createPTXMFInfoExtract(getPTXTargetMachine(), getOptLevel()));
PM->add(createPTXFPRoundingModePass(getPTXTargetMachine(), getOptLevel()));
return true;
}
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