19a004b468
Follow up to the series: 1. https://reviews.llvm.org/D140161 2. https://reviews.llvm.org/D140349 3. https://reviews.llvm.org/D140331 4. https://reviews.llvm.org/D140323 Completes the work from the previous two for remaining targets. This creates the following named passes that can be run via `llc -{start|stop}-{before|after}`: - arc-isel - arm-isel - avr-isel - bpf-isel - csky-isel - hexagon-isel - lanai-isel - loongarch-isel - m68k-isel - msp430-isel - mips-isel - nvptx-isel - ppc-codegen - riscv-isel - sparc-isel - systemz-isel - ve-isel - wasm-isel - xcore-isel A nice way to write tests for SelectionDAGISel might be to use a RUN: line like: llc -mtriple=<triple> -start-before=<arch>-isel -stop-after=finalize-isel -o - Fixes: https://github.com/llvm/llvm-project/issues/59538 Reviewed By: asb, zixuan-wu Differential Revision: https://reviews.llvm.org/D140364
126 lines
4.2 KiB
C++
126 lines
4.2 KiB
C++
//===--- CSKYTargetMachine.cpp - Define TargetMachine for CSKY ------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Implements the info about CSKY target spec.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "CSKYTargetMachine.h"
|
|
#include "CSKY.h"
|
|
#include "CSKYSubtarget.h"
|
|
#include "CSKYTargetObjectFile.h"
|
|
#include "TargetInfo/CSKYTargetInfo.h"
|
|
#include "llvm/CodeGen/MachineFrameInfo.h"
|
|
#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
|
|
#include "llvm/CodeGen/TargetPassConfig.h"
|
|
#include "llvm/CodeGen/TargetSubtargetInfo.h"
|
|
#include "llvm/MC/TargetRegistry.h"
|
|
#include <optional>
|
|
|
|
using namespace llvm;
|
|
|
|
extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeCSKYTarget() {
|
|
RegisterTargetMachine<CSKYTargetMachine> X(getTheCSKYTarget());
|
|
|
|
PassRegistry *Registry = PassRegistry::getPassRegistry();
|
|
initializeCSKYConstantIslandsPass(*Registry);
|
|
initializeCSKYDAGToDAGISelPass(*Registry);
|
|
}
|
|
|
|
static std::string computeDataLayout(const Triple &TT) {
|
|
std::string Ret;
|
|
|
|
// Only support little endian for now.
|
|
// TODO: Add support for big endian.
|
|
Ret += "e";
|
|
|
|
// CSKY is always 32-bit target with the CSKYv2 ABI as prefer now.
|
|
// It's a 4-byte aligned stack with ELF mangling only.
|
|
Ret += "-m:e-S32-p:32:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:32"
|
|
"-v128:32:32-a:0:32-Fi32-n32";
|
|
|
|
return Ret;
|
|
}
|
|
|
|
CSKYTargetMachine::CSKYTargetMachine(const Target &T, const Triple &TT,
|
|
StringRef CPU, StringRef FS,
|
|
const TargetOptions &Options,
|
|
std::optional<Reloc::Model> RM,
|
|
std::optional<CodeModel::Model> CM,
|
|
CodeGenOpt::Level OL, bool JIT)
|
|
: LLVMTargetMachine(T, computeDataLayout(TT), TT, CPU, FS, Options,
|
|
RM.value_or(Reloc::Static),
|
|
getEffectiveCodeModel(CM, CodeModel::Small), OL),
|
|
TLOF(std::make_unique<CSKYELFTargetObjectFile>()) {
|
|
initAsmInfo();
|
|
}
|
|
|
|
const CSKYSubtarget *
|
|
CSKYTargetMachine::getSubtargetImpl(const Function &F) const {
|
|
Attribute CPUAttr = F.getFnAttribute("target-cpu");
|
|
Attribute TuneAttr = F.getFnAttribute("tune-cpu");
|
|
Attribute FSAttr = F.getFnAttribute("target-features");
|
|
|
|
std::string CPU =
|
|
CPUAttr.isValid() ? CPUAttr.getValueAsString().str() : TargetCPU;
|
|
std::string TuneCPU =
|
|
TuneAttr.isValid() ? TuneAttr.getValueAsString().str() : CPU;
|
|
std::string FS =
|
|
FSAttr.isValid() ? FSAttr.getValueAsString().str() : TargetFS;
|
|
|
|
std::string Key = CPU + TuneCPU + FS;
|
|
auto &I = SubtargetMap[Key];
|
|
if (!I) {
|
|
// This needs to be done before we create a new subtarget since any
|
|
// creation will depend on the TM and the code generation flags on the
|
|
// function that reside in TargetOptions.
|
|
resetTargetOptions(F);
|
|
I = std::make_unique<CSKYSubtarget>(TargetTriple, CPU, TuneCPU, FS, *this);
|
|
if (I->useHardFloat() && !I->hasAnyFloatExt())
|
|
errs() << "Hard-float can't be used with current CPU,"
|
|
" set to Soft-float\n";
|
|
}
|
|
return I.get();
|
|
}
|
|
|
|
namespace {
|
|
class CSKYPassConfig : public TargetPassConfig {
|
|
public:
|
|
CSKYPassConfig(CSKYTargetMachine &TM, PassManagerBase &PM)
|
|
: TargetPassConfig(TM, PM) {}
|
|
|
|
CSKYTargetMachine &getCSKYTargetMachine() const {
|
|
return getTM<CSKYTargetMachine>();
|
|
}
|
|
|
|
void addIRPasses() override;
|
|
bool addInstSelector() override;
|
|
void addPreEmitPass() override;
|
|
};
|
|
|
|
} // namespace
|
|
|
|
TargetPassConfig *CSKYTargetMachine::createPassConfig(PassManagerBase &PM) {
|
|
return new CSKYPassConfig(*this, PM);
|
|
}
|
|
|
|
void CSKYPassConfig::addIRPasses() {
|
|
addPass(createAtomicExpandPass());
|
|
TargetPassConfig::addIRPasses();
|
|
}
|
|
|
|
bool CSKYPassConfig::addInstSelector() {
|
|
addPass(createCSKYISelDag(getCSKYTargetMachine(), getOptLevel()));
|
|
|
|
return false;
|
|
}
|
|
|
|
void CSKYPassConfig::addPreEmitPass() {
|
|
addPass(createCSKYConstantIslandPass());
|
|
}
|