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//===----------------------------------------------------------------------===//
// Instruction Selector Subtarget Control
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// This file defines a pass used to change the subtarget for the
// Mips Instruction selector.
//
//===----------------------------------------------------------------------===//
#include "Mips.h"
#include "MipsTargetMachine.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/CodeGen/StackProtector.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
#define DEBUG_TYPE "mips-isel"
namespace {
class MipsModuleDAGToDAGISel : public MachineFunctionPass {
public:
static char ID;
MipsModuleDAGToDAGISel() : MachineFunctionPass(ID) {}
// Pass Name
StringRef getPassName() const override {
return "MIPS DAG->DAG Pattern Instruction Selection";
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.addRequired<TargetPassConfig>();
AU.addPreserved<StackProtector>();
MachineFunctionPass::getAnalysisUsage(AU);
}
bool runOnMachineFunction(MachineFunction &MF) override;
};
char MipsModuleDAGToDAGISel::ID = 0;
}
bool MipsModuleDAGToDAGISel::runOnMachineFunction(MachineFunction &MF) {
LLVM_DEBUG(errs() << "In MipsModuleDAGToDAGISel::runMachineFunction\n");
auto &TPC = getAnalysis<TargetPassConfig>();
auto &TM = TPC.getTM<MipsTargetMachine>();
TM.resetSubtarget(&MF);
return false;
}
llvm::FunctionPass *llvm::createMipsModuleISelDagPass() {
return new MipsModuleDAGToDAGISel();
}
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