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//===-- SPUTargetMachine.cpp - Define TargetMachine for Cell SPU ----------===//
//
// 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 Cell SPU target.
//
//===----------------------------------------------------------------------===//
#include "SPUTargetMachine.h"
#include "SPU.h"
#include "llvm/PassManager.h"
#include "llvm/CodeGen/SchedulerRegistry.h"
#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
extern "C" void LLVMInitializeCellSPUTarget() {
// Register the target.
RegisterTargetMachine<SPUTargetMachine> X(TheCellSPUTarget);
}
const std::pair<unsigned, int> *
SPUFrameLowering::getCalleeSaveSpillSlots(unsigned &NumEntries) const {
NumEntries = 1;
return &LR[0];
}
SPUTargetMachine::SPUTargetMachine(const Target &T, StringRef TT,
StringRef CPU, StringRef FS,
const TargetOptions &Options,
Reloc::Model RM, CodeModel::Model CM,
CodeGenOpt::Level OL)
: LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
Subtarget(TT, CPU, FS),
DataLayout(Subtarget.getTargetDataString()),
InstrInfo(*this),
FrameLowering(Subtarget),
TLInfo(*this),
TSInfo(*this),
InstrItins(Subtarget.getInstrItineraryData()) {
}
//===----------------------------------------------------------------------===//
// Pass Pipeline Configuration
//===----------------------------------------------------------------------===//
namespace {
/// SPU Code Generator Pass Configuration Options.
class SPUPassConfig : public TargetPassConfig {
public:
SPUPassConfig(SPUTargetMachine *TM, PassManagerBase &PM)
: TargetPassConfig(TM, PM) {}
SPUTargetMachine &getSPUTargetMachine() const {
return getTM<SPUTargetMachine>();
}
virtual bool addInstSelector();
virtual bool addPreEmitPass();
};
} // namespace
TargetPassConfig *SPUTargetMachine::createPassConfig(PassManagerBase &PM) {
return new SPUPassConfig(this, PM);
}
bool SPUPassConfig::addInstSelector() {
// Install an instruction selector.
PM->add(createSPUISelDag(getSPUTargetMachine()));
return false;
}
// passes to run just before printing the assembly
bool SPUPassConfig::addPreEmitPass() {
// load the TCE instruction scheduler, if available via
// loaded plugins
typedef llvm::FunctionPass* (*BuilderFunc)(const char*);
BuilderFunc schedulerCreator =
(BuilderFunc)(intptr_t)sys::DynamicLibrary::SearchForAddressOfSymbol(
"createTCESchedulerPass");
if (schedulerCreator != NULL)
PM->add(schedulerCreator("cellspu"));
//align instructions with nops/lnops for dual issue
PM->add(createSPUNopFillerPass(getSPUTargetMachine()));
return true;
}
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