static char ID;
ARM64StorePairSuppress() : MachineFunctionPass(ID) {}
- virtual const char *getPassName() const {
+ virtual const char *getPassName() const override {
return "ARM64 Store Pair Suppression";
}
- bool runOnMachineFunction(MachineFunction &F);
+ bool runOnMachineFunction(MachineFunction &F) override;
private:
bool shouldAddSTPToBlock(const MachineBasicBlock *BB);
- bool isNarrowFPStore(const MachineInstr *MI);
+ bool isNarrowFPStore(const MachineInstr &MI);
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesCFG();
AU.addRequired<MachineTraceMetrics>();
AU.addPreserved<MachineTraceMetrics>();
///
/// FIXME: We plan to develop a decent Target abstraction for simple loads and
/// stores. Until then use a nasty switch similar to ARM64LoadStoreOptimizer.
-bool ARM64StorePairSuppress::isNarrowFPStore(const MachineInstr *MI) {
- switch (MI->getOpcode()) {
+bool ARM64StorePairSuppress::isNarrowFPStore(const MachineInstr &MI) {
+ switch (MI.getOpcode()) {
default:
return false;
case ARM64::STRSui:
// precisely determine whether a store pair can be formed. But we do want to
// filter out most situations where we can't form store pairs to avoid
// computing trace metrics in those cases.
- for (MachineFunction::iterator BI = MF->begin(), BE = MF->end(); BI != BE;
- ++BI) {
+ for (auto &MBB: *MF) {
bool SuppressSTP = false;
unsigned PrevBaseReg = 0;
- for (MachineBasicBlock::iterator I = BI->begin(), E = BI->end(); I != E;
- ++I) {
- if (!isNarrowFPStore(I))
+ for (auto &MI: MBB) {
+ if (!isNarrowFPStore(MI))
continue;
unsigned BaseReg;
unsigned Offset;
- if (TII->getLdStBaseRegImmOfs(I, BaseReg, Offset, TRI)) {
+ if (TII->getLdStBaseRegImmOfs(&MI, BaseReg, Offset, TRI)) {
if (PrevBaseReg == BaseReg) {
// If this block can take STPs, skip ahead to the next block.
- if (!SuppressSTP && shouldAddSTPToBlock(I->getParent()))
+ if (!SuppressSTP && shouldAddSTPToBlock(MI.getParent()))
break;
// Otherwise, continue unpairing the stores in this block.
- DEBUG(dbgs() << "Unpairing store " << *I << "\n");
+ DEBUG(dbgs() << "Unpairing store " << MI << "\n");
SuppressSTP = true;
- TII->suppressLdStPair(I);
+ TII->suppressLdStPair(&MI);
}
PrevBaseReg = BaseReg;
} else