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[SCEV] Teach SCEVExpander to use zext nneg when possible #70815

Merged
merged 2 commits into from
Oct 31, 2023
Merged

[SCEV] Teach SCEVExpander to use zext nneg when possible #70815

merged 2 commits into from
Oct 31, 2023

Commits on Oct 31, 2023

  1. [SCEV] Teach SCEVExpander to use zext nneg when possible 

    zext nneg was recently added to the IR in llvm#67982.  Teaching SCEVExpander
to emit nneg when possible is valuable since SCEV may have proved
non-trivial facts about loop bounds which would otherwise be lost when
materializing the value.
    @preames
    preames committed Oct 31, 2023
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  2. Fix polly build failure

    @preames
    preames committed Oct 31, 2023
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    b3daadc View commit details
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