[PATCH] D136319: [GISel] Rework trunc/shl combine in a generic trunc/shift combine

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp:2313
+    //
+    // TODO: Fix truncstore combine to handle (trunc(lshr (trunc x), k)).
+    for (auto &User : MRI.use_instructions(DstReg))
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arsenm wrote:
> I don't understand special casing this, I'd rather just ignore it
Do this first then?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D136319/new/

https://reviews.llvm.org/D136319