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Fix optIsLoopEntry to skip removed loops #61527

Merged
merged 1 commit into from
Nov 12, 2021
Merged

Fix optIsLoopEntry to skip removed loops #61527

merged 1 commit into from
Nov 12, 2021

Commits on Nov 12, 2021

  1. Fix optIsLoopEntry to skip removed loops 

    This was preventing block compaction with loop entry blocks in loops
that had been previously optimized away (and thus removed from the
loop table).

There are a few cases where we now delete dead code that was previously
left in the function. There are a number of spurious local weighting
and IG textual asm diffs changes, possibly due to how PerfScore is implemented
(there are some surprisingly large PerfScore changes in a few cases,
despite no change in (most) generated code).
    @BruceForstall
    BruceForstall committed Nov 12, 2021
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