[PATCH] D109325: [ARM] Teach DemandedVectorElts about VMOVN lanes

[Sjoerd Meijer via Phabricator via llvm-commits]

SjoerdMeijer accepted this revision.
SjoerdMeijer added a comment.
This revision is now accepted and ready to land.

Ah, thanks, got it, that's clear! Looks like a good change to me.



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Comment at: llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp:276
+    break;
+  case Intrinsic::arm_mve_vcvt_narrow:
+    SimplifyNarrowInstrTopBottom(2);
----------------
The constants 2, 4, and 7 here were not immediately obvious to me. Perhaps a comment would help less familiar readers.


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  https://reviews.llvm.org/D109325/new/

https://reviews.llvm.org/D109325