1 //===----------------------------------------------------------------------===//
2 // Instruction Selector Subtarget Control
3 //===----------------------------------------------------------------------===//
5 //===----------------------------------------------------------------------===//
6 // This file defines a pass used to change the subtarget for the
7 // Mips Instruction selector.
9 //===----------------------------------------------------------------------===//
12 #include "MipsTargetMachine.h"
13 #include "llvm/CodeGen/TargetPassConfig.h"
14 #include "llvm/Support/Debug.h"
15 #include "llvm/Support/raw_ostream.h"
19 #define DEBUG_TYPE "mips-isel"
22 class MipsModuleDAGToDAGISel : public MachineFunctionPass {
26 MipsModuleDAGToDAGISel() : MachineFunctionPass(ID) {}
29 StringRef getPassName() const override {
30 return "MIPS DAG->DAG Pattern Instruction Selection";
33 void getAnalysisUsage(AnalysisUsage &AU) const override {
34 AU.addRequired<TargetPassConfig>();
35 MachineFunctionPass::getAnalysisUsage(AU);
38 bool runOnMachineFunction(MachineFunction &MF) override;
41 char MipsModuleDAGToDAGISel::ID = 0;
44 bool MipsModuleDAGToDAGISel::runOnMachineFunction(MachineFunction &MF) {
45 DEBUG(errs() << "In MipsModuleDAGToDAGISel::runMachineFunction\n");
46 auto &TPC = getAnalysis<TargetPassConfig>();
47 auto &TM = TPC.getTM<MipsTargetMachine>();
48 TM.resetSubtarget(&MF);
52 llvm::FunctionPass *llvm::createMipsModuleISelDagPass() {
53 return new MipsModuleDAGToDAGISel();