Eli Friedman fd229caa01 [polly] Fix SCEVLoopAddRecRewriter to avoid invalid AddRecs. ...

When we're remapping an AddRec, the AddRec constructed by a partial
rewrite might not make sense.  This triggers an assertion complaining
it's not loop-invariant.

Instead of constructing the partially rewritten AddRec, just skip
straight to calling evaluateAtIteration.

Testcase was automatically reduced using llvm-reduce, so it's a little
messy, but hopefully makes sense.

Differential Revision: https://reviews.llvm.org/D102959

2021-06-01 09:51:05 -07:00

518 KiB

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