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Show First 20 Lines • Show All 1,074 Lines • ▼ Show 20 Lines	if (CmpIndVarSize > ExitCntSize) {

// Before resorting to actually inserting the truncate, use the same		// Before resorting to actually inserting the truncate, use the same
// reasoning as from SimplifyIndvar::eliminateTrunc to see if we can extend		// reasoning as from SimplifyIndvar::eliminateTrunc to see if we can extend
// the other side of the comparison instead. We still evaluate the limit		// the other side of the comparison instead. We still evaluate the limit
// in the narrower bitwidth, we just prefer a zext/sext outside the loop to		// in the narrower bitwidth, we just prefer a zext/sext outside the loop to
// a truncate within in.		// a truncate within in.
bool Extended = false;		bool Extended = false;
const SCEV *IV = SE->getSCEV(CmpIndVar);		const SCEV *IV = SE->getSCEV(CmpIndVar);
const SCEV *TruncatedIV = SE->getTruncateExpr(SE->getSCEV(CmpIndVar),		const SCEV *TruncatedIV = SE->getTruncateExpr(IV, ExitCnt->getType());
ExitCnt->getType());
const SCEV *ZExtTrunc =		const SCEV *ZExtTrunc =
SE->getZeroExtendExpr(TruncatedIV, CmpIndVar->getType());		SE->getZeroExtendExpr(TruncatedIV, CmpIndVar->getType());

if (ZExtTrunc == IV) {		if (ZExtTrunc == IV) {
Extended = true;		Extended = true;
ExitCnt = Builder.CreateZExt(ExitCnt, IndVar->getType(),		ExitCnt = Builder.CreateZExt(ExitCnt, IndVar->getType(),
"wide.trip.count");		"wide.trip.count");
} else {		} else {
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[IndVarSimplify] Remove duplicate call to getSCEV. NFCClosedPublic