// simplification on the wide IVs.
while (!LoopPhis.empty()) {
// Evaluate as many IV expressions as possible before widening any IVs. This
- // forces SCEV to propagate no-wrap flags before evaluating sign/zero
+ // forces SCEV to set no-wrap flags before evaluating sign/zero
// extension. The first time SCEV attempts to normalize sign/zero extension,
// the result becomes final. So for the most predictable results, we delay
// evaluation of sign/zero extend evaluation until needed, and avoid running
// Simplification works best when run before other consumers of SCEV. We
// attempt to avoid evaluating SCEVs for sign/zero extend operations until
// other expressions involving loop IVs have been evaluated. This helps SCEV
- // propagate no-wrap flags before normalizing sign/zero extension.
+ // set no-wrap flags before normalizing sign/zero extension.
if (DisableIVRewrite) {
Rewriter.disableCanonicalMode();
SimplifyIVUsersNoRewrite(L, Rewriter);