Petar Avramovic 2bf4eeeeb6 [GlobalISel] Avoid creating COPY in LegalizationArtifactCombiner ...

When Src and Dst used in buildAnyExtOrTrunc or buildSExtOrTrunc
have the same type (creates COPY) use Src register directly or
use replaceRegOrBuildCopy instead.

Differential Revision: https://reviews.llvm.org/D108306

2021-08-24 11:09:56 +02:00

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