[PATCH] D38275: [X86] Improve handling of UDIVREM8_ZEXT_HREG/SDIVREM8_SEXT_HREG to support 64-bit extensions.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon accepted this revision.
RKSimon added a comment.
This revision is now accepted and ready to land.

LGTM - possibly split the sign/known bits change from the X86ISelDAGToDAG.cpp change but its not vital to do so


https://reviews.llvm.org/D38275