56   case Instruction::Trunc:  in EvaluateInDifferentType()
183         (CI.getOpcode() == Instruction::Trunc &&  in commonCastTransforms()
349   case Instruction::Trunc:  in canEvaluateTruncated()
401 static Instruction *foldVecTruncToExtElt(TruncInst &Trunc,  in foldVecTruncToExtElt()  argument
403   Value *TruncOp = Trunc.getOperand(0);  in foldVecTruncToExtElt()
404   Type *DestType = Trunc.getType();  in foldVecTruncToExtElt()
441 Instruction *InstCombinerImpl::narrowFunnelShift(TruncInst &Trunc) {  in narrowFunnelShift()  argument
442   assert((isa<VectorType>(Trunc.getSrcTy()) ||  in narrowFunnelShift()
443           shouldChangeType(Trunc.getSrcTy(), Trunc.getType())) &&  in narrowFunnelShift()
448   Type *DestTy = Trunc.getType();  in narrowFunnelShift()
450   unsigned WideWidth = Trunc.getSrcTy()->getScalarSizeInBits();  in narrowFunnelShift()
457   if (!match(Trunc.getOperand(0), m_OneUse(m_Or(m_BinOp(Or0), m_BinOp(Or1)))))  in narrowFunnelShift()
523   if (!MaskedValueIsZero(ShVal1, HiBitMask, 0, &Trunc))  in narrowFunnelShift()
538   Function *F = Intrinsic::getDeclaration(Trunc.getModule(), IID, DestTy);  in narrowFunnelShift()
544 Instruction *InstCombinerImpl::narrowBinOp(TruncInst &Trunc) {  in narrowBinOp()  argument
545   Type *SrcTy = Trunc.getSrcTy();  in narrowBinOp()
546   Type *DestTy = Trunc.getType();  in narrowBinOp()
554   if (!match(Trunc.getOperand(0), m_OneUse(m_BinOp(BinOp))))  in narrowBinOp()
603         auto *OldShift = cast<Instruction>(Trunc.getOperand(0));  in narrowBinOp()
621   if (Instruction *NarrowOr = narrowFunnelShift(Trunc))  in narrowBinOp()
630 static Instruction *shrinkSplatShuffle(TruncInst &Trunc,  in shrinkSplatShuffle()  argument
632   auto *Shuf = dyn_cast<ShuffleVectorInst>(Trunc.getOperand(0));  in shrinkSplatShuffle()
638     Value *NarrowOp = Builder.CreateTrunc(Shuf->getOperand(0), Trunc.getType());  in shrinkSplatShuffle()
650 static Instruction *shrinkInsertElt(CastInst &Trunc,  in shrinkInsertElt()  argument
652   Instruction::CastOps Opcode = Trunc.getOpcode();  in shrinkInsertElt()
653   assert((Opcode == Instruction::Trunc || Opcode == Instruction::FPTrunc) &&  in shrinkInsertElt()
656   auto *InsElt = dyn_cast<InsertElementInst>(Trunc.getOperand(0));  in shrinkInsertElt()
660   Type *DestTy = Trunc.getType();  in shrinkInsertElt()
677 Instruction *InstCombinerImpl::visitTrunc(TruncInst &Trunc) {  in visitTrunc()  argument
678   if (Instruction *Result = commonCastTransforms(Trunc))  in visitTrunc()
681   Value *Src = Trunc.getOperand(0);  in visitTrunc()
682   Type *DestTy = Trunc.getType(), *SrcTy = Src->getType();  in visitTrunc()
691       canEvaluateTruncated(Src, DestTy, *this, &Trunc)) {  in visitTrunc()
698                << Trunc << '\n');  in visitTrunc()
701     return replaceInstUsesWith(Trunc, Res);  in visitTrunc()
712           canEvaluateTruncated(Src, NewDestTy, *this, &Trunc)) {  in visitTrunc()
716                    << Trunc << '\n');  in visitTrunc()
734   if (SimplifyDemandedInstructionBits(Trunc))  in visitTrunc()
735     return &Trunc;  in visitTrunc()
776     if (Trunc.hasNoUnsignedWrap() || Trunc.hasNoSignedWrap()) {  in visitTrunc()
800         return ConstantFoldCastOperand(Instruction::Trunc, ShAmt, A->getType(),  in visitTrunc()
822   if (Instruction *I = narrowBinOp(Trunc))  in visitTrunc()
825   if (Instruction *I = shrinkSplatShuffle(Trunc, Builder))  in visitTrunc()
828   if (Instruction *I = shrinkInsertElt(Trunc, Builder))  in visitTrunc()
848   if (Instruction *I = foldVecTruncToExtElt(Trunc, *this))  in visitTrunc()
889           Builder.CreateIntrinsic(Intrinsic::ctlz, {Trunc.getType()}, {A, B});  in visitTrunc()
895     if (Trunc.getFunction() &&  in visitTrunc()
896         Trunc.getFunction()->hasFnAttribute(Attribute::VScaleRange)) {  in visitTrunc()
898           Trunc.getFunction()->getFnAttribute(Attribute::VScaleRange);  in visitTrunc()
902           return replaceInstUsesWith(Trunc, VScale);  in visitTrunc()
909   if (!Trunc.hasNoSignedWrap() &&  in visitTrunc()
910       ComputeMaxSignificantBits(Src, /*Depth=*/0, &Trunc) <= DestWidth) {  in visitTrunc()
911     Trunc.setHasNoSignedWrap(true);  in visitTrunc()
914   if (!Trunc.hasNoUnsignedWrap() &&  in visitTrunc()
916                         /*Depth=*/0, &Trunc)) {  in visitTrunc()
917     Trunc.setHasNoUnsignedWrap(true);  in visitTrunc()
921   return Changed ? &Trunc : nullptr;  in visitTrunc()
1038   case Instruction::Trunc: // zext(trunc(x)) -> trunc(x) or zext(x)  in canEvaluateZExtd()
1222       Value *Trunc = Builder.CreateTrunc(A, DestTy);  in visitZExt()  local
1224       return BinaryOperator::CreateAnd(Trunc,  in visitZExt()
1225                                        ConstantInt::get(Trunc->getType(),  in visitZExt()
1392   case Instruction::Trunc: // sext(trunc(x)) -> trunc(x) or sext(x)  in canEvaluateSExtd()