[PATCH] D59227: [GlobalISel][Utils] Teach getConstantVRegVal how to look through trunc and z|sext

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet added a comment.

Prototyped a retry legalization process in D59339 <https://reviews.llvm.org/D59339>.
The problem is that this patch is still needed to access the constant, because the legalization artifacts combiner inserts copies instead of updating the users.

Bottom line, @arsenm may I land this, while we figure out what we want to do for the broader problem?


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D59227/new/

https://reviews.llvm.org/D59227