[PATCH] D100245: [ARM] Expand VMOVRRD simplification pattern

[Dave Green via Phabricator via llvm-commits]

dmgreen added inline comments.


================
Comment at: llvm/test/CodeGen/ARM/dagcombine-anyexttozeroext.ll:47
 ; CHECK-NEXT:    vmovl.u8 q8, d16
-; CHECK-NEXT:    vmovl.u16 q8, d16
-; CHECK-NEXT:    vmov r0, r1, d16
-; CHECK-NEXT:    vmov r2, r3, d17
+; CHECK-NEXT:    vmov.u16 r0, d16[0]
+; CHECK-NEXT:    vmov.u16 r1, d16[1]
----------------
This is a bit unfortunate, but if you run the code through opt it is already simplified to a single zext, which still becomes a vmovl; vmovl pair


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100245/new/

https://reviews.llvm.org/D100245