[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.

I'm going to hold on that one for a little longer.
I wonder how SDAG handle constant during legalization, because I was not expecting that we would not issue the constant for the new type period.
I suspect it works because constants are just not materialized via instructions and maybe we should just ignore them during legalization. (If a constant is illegal, at the end of the legalization process, it should have any users, right?)


Repository:
  rL LLVM

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  https://reviews.llvm.org/D59227/new/

https://reviews.llvm.org/D59227