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[GISel] Correct the known bits of G_ANYEXT

Authored by bogner on Aug 20 2020, 5:03 PM.

Description

[GISel] Correct the known bits of G_ANYEXT

Known bits for G_ANYEXT was incorrectly using KnownBits::zext, causing
us to treat the high bits as zero even though they're (by definition)
unknown.

Differential Revision: https://reviews.llvm.org/D86323

Details

Committed
bognerAug 20 2020, 5:17 PM
Differential Revision
D86323: [GISel] Correct the known bits of G_ANYEXT
Parents
rG70923983e542: Improve pretty-printing for APValues of void type.
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