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[SCEV] ] If RHS >= Start, simplify (Start smax RHS) to RHS for trip counts.

Authored by fhahn on Aug 4 2020, 2:42 AM.



This is the max version of D85046.

This change causes binary changes in 44 out of 237 benchmarks (out of

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fhahn created this revision.Aug 4 2020, 2:42 AM
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fhahn requested review of this revision.Aug 4 2020, 2:42 AM

Looks good to me.

lebedev.ri accepted this revision.Aug 7 2020, 1:44 AM

I feel like this is pretty identical to the D85046, so lgtm modulo some possible generalization.

This revision is now accepted and ready to land.Aug 7 2020, 1:44 AM