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//===-- Target.h ------------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
///
/// Classes that handle the creation of target-specific objects. This is
/// similar to llvm::Target/TargetRegistry.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_EXEGESIS_TARGET_H
#define LLVM_TOOLS_LLVM_EXEGESIS_TARGET_H
#include "BenchmarkResult.h"
#include "BenchmarkRunner.h"
#include "LlvmState.h"
#include "llvm/ADT/Triple.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCRegisterInfo.h"
namespace exegesis {
class ExegesisTarget {
public:
// Targets can use this to add target-specific passes in assembleToStream();
virtual void addTargetSpecificPasses(llvm::PassManagerBase &PM) const {}
// Generates code to move a constant into a the given register.
virtual std::vector<llvm::MCInst>
setRegToConstant(const llvm::MCSubtargetInfo &STI, unsigned Reg) const {
return {};
}
// Creates a benchmark runner for the given mode.
std::unique_ptr<BenchmarkRunner>
createBenchmarkRunner(InstructionBenchmark::ModeE Mode,
const LLVMState &State) const;
// Returns the ExegesisTarget for the given triple or nullptr if the target
// does not exist.
static const ExegesisTarget *lookup(llvm::Triple TT);
// Returns the default (unspecialized) ExegesisTarget.
static const ExegesisTarget &getDefault();
// Registers a target. Not thread safe.
static void registerTarget(ExegesisTarget *T);
virtual ~ExegesisTarget();
private:
virtual bool matchesArch(llvm::Triple::ArchType Arch) const = 0;
// Targets can implement their own Latency/Uops benchmarks runners by
// implementing these.
std::unique_ptr<BenchmarkRunner> virtual createLatencyBenchmarkRunner(
const LLVMState &State) const;
std::unique_ptr<BenchmarkRunner> virtual createUopsBenchmarkRunner(
const LLVMState &State) const;
const ExegesisTarget *Next = nullptr;
};
} // namespace exegesis
#endif // LLVM_TOOLS_LLVM_EXEGESIS_TARGET_H
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