[PATCH] D60854: [DAGLegalize][PowerPC] Add promote legalization of addc/adde and subc/sube

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

Oh, I see, we start with an i32 ADDE, then https://github.com/llvm/llvm-project/blob/e7fe6dd5edb828e702d02c7cdc6565ace4c84f5b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp#L10232 narrows the operation.  We probably shouldn't perform that transform if it would produce an illegal ADDE.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D60854/new/

https://reviews.llvm.org/D60854