================
@@ -2903,6 +2920,38 @@ void
LoopVectorizationCostModel::collectLoopUniforms(ElementCount VF) {
AddToWorklistIfAllowed(IndUpdate);
}
+ // Handle monotonic phis (similarly to induction vars).
+ for (const auto &MonotonicPHI : Legal->getMonotonicPHIs()) {
----------------
MacDue wrote:
I'll have a look into reworking the descriptor to only allow
compresstore/expandload uses for now. I agree it would be safer (and less of a
hack than the invalid cost).
https://github.com/llvm/llvm-project/pull/214491
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