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Cache SelectionDAGISel TargetInstrInfo lookups on the class and

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propagate. Also use the TargetSubtargetInfo and the MachineFunction
and move TargetRegisterInfo query closer to uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219273 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2014-10-08 01:58:03 +00:00
parent ede41a93d3
commit f3358e3d49
2 changed files with 11 additions and 13 deletions
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2
include/llvm/CodeGen/SelectionDAGISel.h
View File

@ -51,6 +51,8 @@ public:
AliasAnalysis *AA;
GCFunctionInfo *GFI;
CodeGenOpt::Level OptLevel;
const TargetInstrInfo *TII;
static char ID;
explicit SelectionDAGISel(TargetMachine &tm,

22
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
View File

@ -285,7 +285,7 @@ namespace llvm {
ScheduleDAGSDNodes* createDefaultScheduler(SelectionDAGISel *IS,
CodeGenOpt::Level OptLevel) {
const TargetLowering *TLI = IS->getTargetLowering();
const TargetSubtargetInfo &ST = IS->TM.getSubtarget<TargetSubtargetInfo>();
const TargetSubtargetInfo &ST = IS->MF->getSubtarget();
if (OptLevel == CodeGenOpt::None || ST.useMachineScheduler() ||
TLI->getSchedulingPreference() == Sched::Source)
@ -425,9 +425,7 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
NewOptLevel = CodeGenOpt::None;
OptLevelChanger OLC(*this, NewOptLevel);
const TargetInstrInfo &TII = *TM.getSubtargetImpl()->getInstrInfo();
const TargetRegisterInfo &TRI = *TM.getSubtargetImpl()->getRegisterInfo();
TII = TM.getSubtargetImpl()->getInstrInfo();
RegInfo = &MF->getRegInfo();
AA = &getAnalysis<AliasAnalysis>();
LibInfo = &getAnalysis<TargetLibraryInfo>();
@ -455,7 +453,8 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
// copied into vregs, emit the copies into the top of the block before
// emitting the code for the block.
MachineBasicBlock *EntryMBB = MF->begin();
RegInfo->EmitLiveInCopies(EntryMBB, TRI, TII);
const TargetRegisterInfo &TRI = *TM.getSubtargetImpl()->getRegisterInfo();
RegInfo->EmitLiveInCopies(EntryMBB, TRI, *TII);
DenseMap<unsigned, unsigned> LiveInMap;
if (!FuncInfo->ArgDbgValues.empty())
@ -496,7 +495,7 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
unsigned Offset = IsIndirect ? MI->getOperand(1).getImm() : 0;
// Def is never a terminator here, so it is ok to increment InsertPos.
BuildMI(*EntryMBB, ++InsertPos, MI->getDebugLoc(),
TII.get(TargetOpcode::DBG_VALUE), IsIndirect, LDI->second, Offset,
TII->get(TargetOpcode::DBG_VALUE), IsIndirect, LDI->second, Offset,
Variable, Expr);
// If this vreg is directly copied into an exported register then
@ -517,7 +516,7 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
if (CopyUseMI) {
MachineInstr *NewMI =
BuildMI(*MF, CopyUseMI->getDebugLoc(),
TII.get(TargetOpcode::DBG_VALUE), IsIndirect,
TII->get(TargetOpcode::DBG_VALUE), IsIndirect,
CopyUseMI->getOperand(0).getReg(), Offset, Variable, Expr);
MachineBasicBlock::iterator Pos = CopyUseMI;
EntryMBB->insertAfter(Pos, NewMI);
@ -532,8 +531,7 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
break;
for (const auto &MI : MBB) {
const MCInstrDesc &MCID =
TM.getSubtargetImpl()->getInstrInfo()->get(MI.getOpcode());
const MCInstrDesc &MCID = TII->get(MI.getOpcode());
if ((MCID.isCall() && !MCID.isReturn()) ||
MI.isStackAligningInlineAsm()) {
MFI->setHasCalls(true);
@ -900,8 +898,7 @@ void SelectionDAGISel::PrepareEHLandingPad() {
// Assign the call site to the landing pad's begin label.
MF->getMMI().setCallSiteLandingPad(Label, SDB->LPadToCallSiteMap[MBB]);
const MCInstrDesc &II =
TM.getSubtargetImpl()->getInstrInfo()->get(TargetOpcode::EH_LABEL);
const MCInstrDesc &II = TII->get(TargetOpcode::EH_LABEL);
BuildMI(*MBB, FuncInfo->InsertPt, SDB->getCurDebugLoc(), II)
.addSym(Label);
@ -3118,8 +3115,7 @@ SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable,
if (EmitNodeInfo & OPFL_MemRefs) {
// Only attach load or store memory operands if the generated
// instruction may load or store.
const MCInstrDesc &MCID =
TM.getSubtargetImpl()->getInstrInfo()->get(TargetOpc);
const MCInstrDesc &MCID = TII->get(TargetOpc);
bool mayLoad = MCID.mayLoad();
bool mayStore = MCID.mayStore();