[PATCH] D29495: [SelectionDAG] In InstrEmitter, handle EXTRACT_SUBREG of a physical register.

Geoff Berry via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Feb 3 08:39:28 PST 2017

gberry created this revision.
Herald added subscribers: mcrosier, aemerson.

Without this change, the getVR() call would hit an assert since it was
being passed a physical register.

Update the AArch64/ldst-opt.ll test with a case that triggers this
behavior by adding a run with strict-align, which causes an unaligned
STR XZR instruction to be split into byte stores, creating an
EXTRACT_SUBREG of XZR that triggers the original problem.



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