[PATCH] D66181: [AArch64][GlobalISel] Add support for narrowScalar of G_ZEXT

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp:622
+    }
+    MIRBuilder.buildMerge(MI.getOperand(0).getReg(), {SrcReg, HighReg});
     MI.eraseFromParent();
----------------
This should be able to handle cases where the result size is any multiple  of the narrow size


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66181/new/

https://reviews.llvm.org/D66181