[PATCH] D50977: [TableGen] Examine entire subreg compositions to detect ambiguity

[Krzysztof Parzyszek via Phabricator via llvm-commits]

kparzysz updated this revision to Diff 175318.
kparzysz retitled this revision from "[TableGen] Prefer user-defined subregister compositions over inferred ones" to "[TableGen] Examine entire subreg compositions to detect ambiguity".
kparzysz added a comment.

Examine subregister (and composition) actions on all registers when detecting ambiguities. This eliminates the warning from the SystemZ build, but keeps the warning in the `subreg_ll32` from earlier comments.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D50977/new/

https://reviews.llvm.org/D50977

Files:
  test/TableGen/ambiguous-composition.td
  utils/TableGen/CodeGenRegisters.cpp

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