Lines Matching defs:DU
1146 Instruction *cloneIVUser(NarrowIVDefUse DU, const SCEVAddRecExpr *WideAR);
1147 Instruction *cloneArithmeticIVUser(NarrowIVDefUse DU,
1149 Instruction *cloneBitwiseIVUser(NarrowIVDefUse DU);
1155 WidenedRecTy getWideRecurrence(NarrowIVDefUse DU);
1157 WidenedRecTy getExtendedOperandRecurrence(NarrowIVDefUse DU);
1162 Instruction *widenIVUse(NarrowIVDefUse DU, SCEVExpander &Rewriter,
1164 void truncateIVUse(NarrowIVDefUse DU);
1166 bool widenLoopCompare(NarrowIVDefUse DU);
1167 bool widenWithVariantUse(NarrowIVDefUse DU);
1255 Instruction *WidenIV::cloneIVUser(WidenIV::NarrowIVDefUse DU,
1257 unsigned Opcode = DU.NarrowUse->getOpcode();
1265 return cloneArithmeticIVUser(DU, WideAR);
1273 return cloneBitwiseIVUser(DU);
1277 Instruction *WidenIV::cloneBitwiseIVUser(WidenIV::NarrowIVDefUse DU) {
1278 Instruction *NarrowUse = DU.NarrowUse;
1279 Instruction *NarrowDef = DU.NarrowDef;
1280 Instruction *WideDef = DU.WideDef;
1307 Instruction *WidenIV::cloneArithmeticIVUser(WidenIV::NarrowIVDefUse DU,
1309 Instruction *NarrowUse = DU.NarrowUse;
1310 Instruction *NarrowDef = DU.NarrowDef;
1311 Instruction *WideDef = DU.WideDef;
1478 WidenIV::getExtendedOperandRecurrence(WidenIV::NarrowIVDefUse DU) {
1479 auto Op = matchBinaryOp(DU.NarrowUse);
1489 const unsigned ExtendOperIdx = Op->Operands[0] == DU.NarrowDef ? 1 : 0;
1490 assert(Op->Operands[1 - ExtendOperIdx] == DU.NarrowDef && "bad DU");
1492 ExtendKind ExtKind = getExtendKind(DU.NarrowDef);
1501 if (DU.NeverNegative) {
1523 const SCEV *lhs = SE->getSCEV(DU.WideDef);
1544 WidenIV::WidenedRecTy WidenIV::getWideRecurrence(WidenIV::NarrowIVDefUse DU) {
1545 if (!DU.NarrowUse->getType()->isIntegerTy())
1548 const SCEV *NarrowExpr = SE->getSCEV(DU.NarrowUse);
1558 if (DU.NeverNegative) {
1566 } else if (getExtendKind(DU.NarrowDef) == ExtendKind::Sign) {
1581 void WidenIV::truncateIVUse(NarrowIVDefUse DU) {
1582 auto *InsertPt = getInsertPointForUses(DU.NarrowUse, DU.NarrowDef, DT, LI);
1585 LLVM_DEBUG(dbgs() << "INDVARS: Truncate IV " << *DU.WideDef << " for user "
1586 << *DU.NarrowUse << "\n");
1587 ExtendKind ExtKind = getExtendKind(DU.NarrowDef);
1590 Builder.CreateTrunc(DU.WideDef, DU.NarrowDef->getType(), "",
1591 DU.NeverNegative || ExtKind == ExtendKind::Zero,
1592 DU.NeverNegative || ExtKind == ExtendKind::Sign);
1593 DU.NarrowUse->replaceUsesOfWith(DU.NarrowDef, Trunc);
1599 bool WidenIV::widenLoopCompare(WidenIV::NarrowIVDefUse DU) {
1600 ICmpInst *Cmp = dyn_cast<ICmpInst>(DU.NarrowUse);
1618 bool IsSigned = getExtendKind(DU.NarrowDef) == ExtendKind::Sign;
1619 if (!(DU.NeverNegative || IsSigned == Cmp->isSigned()))
1622 Value *Op = Cmp->getOperand(Cmp->getOperand(0) == DU.NarrowDef ? 1 : 0);
1628 DU.NarrowUse->replaceUsesOfWith(DU.NarrowDef, DU.WideDef);
1633 DU.NarrowUse->replaceUsesOfWith(Op, ExtOp);
1658 bool WidenIV::widenWithVariantUse(WidenIV::NarrowIVDefUse DU) {
1659 Instruction *NarrowUse = DU.NarrowUse;
1660 Instruction *NarrowDef = DU.NarrowDef;
1661 Instruction *WideDef = DU.WideDef;
1670 // The operand that is not defined by NarrowDef of DU. Let's call it the
1674 "bad DU");
1835 Instruction *WidenIV::widenIVUse(WidenIV::NarrowIVDefUse DU,
1838 assert(ExtendKindMap.count(DU.NarrowDef) &&
1844 DU.NeverNegative || getExtendKind(DU.NarrowDef) == ExtendKind::Sign;
1846 DU.NeverNegative || getExtendKind(DU.NarrowDef) == ExtendKind::Zero;
1849 if (PHINode *UsePhi = dyn_cast<PHINode>(DU.NarrowUse)) {
1855 truncateIVUse(DU);
1864 PHINode::Create(DU.WideDef->getType(), 1, UsePhi->getName() + ".wide",
1866 WidePhi->addIncoming(DU.WideDef, UsePhi->getIncomingBlock(0));
1869 Value *Trunc = Builder.CreateTrunc(WidePhi, DU.NarrowDef->getType(), "",
1881 if ((match(DU.NarrowUse, m_SExtLike(m_Value())) && CanWidenBySExt) ||
1882 (isa<ZExtInst>(DU.NarrowUse) && CanWidenByZExt)) {
1883 Value *NewDef = DU.WideDef;
1884 if (DU.NarrowUse->getType() != WideType) {
1885 unsigned CastWidth = SE->getTypeSizeInBits(DU.NarrowUse->getType());
1889 IRBuilder<> Builder(DU.NarrowUse);
1890 NewDef = Builder.CreateTrunc(DU.WideDef, DU.NarrowUse->getType(), "",
1898 << " not wide enough to subsume " << *DU.NarrowUse
1900 DU.NarrowUse->replaceUsesOfWith(DU.NarrowDef, DU.WideDef);
1901 NewDef = DU.NarrowUse;
1904 if (NewDef != DU.NarrowUse) {
1905 LLVM_DEBUG(dbgs() << "INDVARS: eliminating " << *DU.NarrowUse
1906 << " replaced by " << *DU.WideDef << "\n");
1908 DU.NarrowUse->replaceAllUsesWith(NewDef);
1909 DeadInsts.emplace_back(DU.NarrowUse);
1923 WidenedRecTy WideAddRec = getExtendedOperandRecurrence(DU);
1925 WideAddRec = getWideRecurrence(DU);
1940 OrigPhi, WidePhi, DU.NarrowUse, WideInc) ||
1941 DU.NarrowUse->hasNoUnsignedWrap() != WideInc->hasNoUnsignedWrap() ||
1942 DU.NarrowUse->hasNoSignedWrap() != WideInc->hasNoSignedWrap();
1944 Rewriter.hoistIVInc(WideInc, DU.NarrowUse, NeedToRecomputeFlags);
1951 WideUse = cloneIVUser(DU, WideAddRec.first);
1969 // DU.NarrowUse with WideUse. Reattach DbgValue then.
1970 replaceAllDbgUsesWith(*DU.NarrowUse, *WideUse, *WideUse, *DT);
1972 ExtendKindMap[DU.NarrowUse] = WideAddRec.second;
1982 if (widenLoopCompare(DU))
1990 if (widenWithVariantUse(DU))
1996 truncateIVUse(DU);
2137 WidenIV::NarrowIVDefUse DU = NarrowIVUsers.pop_back_val();
2141 Instruction *WideUse = widenIVUse(DU, Rewriter, OrigPhi, WidePhi);
2145 pushNarrowIVUsers(DU.NarrowUse, WideUse);
2148 if (DU.NarrowDef->use_empty())
2149 DeadInsts.emplace_back(DU.NarrowDef);