209   case Instruction::Trunc:  in EvaluateInDifferentType()
303         (CI.getOpcode() == Instruction::Trunc &&  in commonCastTransforms()
461   case Instruction::Trunc:  in canEvaluateTruncated()
498 static Instruction *foldVecTruncToExtElt(TruncInst &Trunc,  in foldVecTruncToExtElt()  argument
500   Value *TruncOp = Trunc.getOperand(0);  in foldVecTruncToExtElt()
501   Type *DestType = Trunc.getType();  in foldVecTruncToExtElt()
538 Instruction *InstCombinerImpl::narrowFunnelShift(TruncInst &Trunc) {  in narrowFunnelShift()  argument
539   assert((isa<VectorType>(Trunc.getSrcTy()) ||  in narrowFunnelShift()
540           shouldChangeType(Trunc.getSrcTy(), Trunc.getType())) &&  in narrowFunnelShift()
545   Type *DestTy = Trunc.getType();  in narrowFunnelShift()
547   unsigned WideWidth = Trunc.getSrcTy()->getScalarSizeInBits();  in narrowFunnelShift()
554   if (!match(Trunc.getOperand(0), m_OneUse(m_Or(m_BinOp(Or0), m_BinOp(Or1)))))  in narrowFunnelShift()
620   if (!MaskedValueIsZero(ShVal1, HiBitMask, 0, &Trunc))  in narrowFunnelShift()
633   Function *F = Intrinsic::getDeclaration(Trunc.getModule(), IID, DestTy);  in narrowFunnelShift()
640 Instruction *InstCombinerImpl::narrowBinOp(TruncInst &Trunc) {  in narrowBinOp()  argument
641   Type *SrcTy = Trunc.getSrcTy();  in narrowBinOp()
642   Type *DestTy = Trunc.getType();  in narrowBinOp()
647   if (!match(Trunc.getOperand(0), m_OneUse(m_BinOp(BinOp))))  in narrowBinOp()
689   if (Instruction *NarrowOr = narrowFunnelShift(Trunc))  in narrowBinOp()
698 static Instruction *shrinkSplatShuffle(TruncInst &Trunc,  in shrinkSplatShuffle()  argument
700   auto *Shuf = dyn_cast<ShuffleVectorInst>(Trunc.getOperand(0));  in shrinkSplatShuffle()
705     Constant *NarrowUndef = UndefValue::get(Trunc.getType());  in shrinkSplatShuffle()
706     Value *NarrowOp = Builder.CreateTrunc(Shuf->getOperand(0), Trunc.getType());  in shrinkSplatShuffle()
718 static Instruction *shrinkInsertElt(CastInst &Trunc,  in shrinkInsertElt()  argument
720   Instruction::CastOps Opcode = Trunc.getOpcode();  in shrinkInsertElt()
721   assert((Opcode == Instruction::Trunc || Opcode == Instruction::FPTrunc) &&  in shrinkInsertElt()
724   auto *InsElt = dyn_cast<InsertElementInst>(Trunc.getOperand(0));  in shrinkInsertElt()
728   Type *DestTy = Trunc.getType();  in shrinkInsertElt()
745 Instruction *InstCombinerImpl::visitTrunc(TruncInst &Trunc) {  in visitTrunc()  argument
746   if (Instruction *Result = commonCastTransforms(Trunc))  in visitTrunc()
749   Value *Src = Trunc.getOperand(0);  in visitTrunc()
750   Type *DestTy = Trunc.getType(), *SrcTy = Src->getType();  in visitTrunc()
759       canEvaluateTruncated(Src, DestTy, *this, &Trunc)) {  in visitTrunc()
766                << Trunc << '\n');  in visitTrunc()
769     return replaceInstUsesWith(Trunc, Res);  in visitTrunc()
780           canEvaluateTruncated(Src, NewDestTy, *this, &Trunc)) {  in visitTrunc()
784                    << Trunc << '\n');  in visitTrunc()
802   if (SimplifyDemandedInstructionBits(Trunc))  in visitTrunc()
803     return &Trunc;  in visitTrunc()
893   if (Instruction *I = narrowBinOp(Trunc))  in visitTrunc()
896   if (Instruction *I = shrinkSplatShuffle(Trunc, Builder))  in visitTrunc()
899   if (Instruction *I = shrinkInsertElt(Trunc, Builder))  in visitTrunc()
919   if (Instruction *I = foldVecTruncToExtElt(Trunc, *this))  in visitTrunc()
960           Builder.CreateIntrinsic(Intrinsic::ctlz, {Trunc.getType()}, {A, B});  in visitTrunc()
1136   case Instruction::Trunc: // zext(trunc(x)) -> trunc(x) or zext(x)  in canEvaluateZExtd()
1308       Value *Trunc = Builder.CreateTrunc(A, CI.getType());  in visitZExt()  local
1310       return BinaryOperator::CreateAnd(Trunc,  in visitZExt()
1311                                        ConstantInt::get(Trunc->getType(),  in visitZExt()
1469   case Instruction::Trunc: // sext(trunc(x)) -> trunc(x) or sext(x)  in canEvaluateSExtd()