[llvm] Shuffle patterns to vdeal + vpack (PR #159464)

[Alexey Karyakin via llvm-commits]

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@@ -0,0 +1,17 @@
+; RUN: llc -march=hexagon -O2  < %s | FileCheck %s
+
+;; Test that a vdeal + vpack can be lowered.
+
+; CHECK: v[[#V1:]]:[[#V0:]] = vdeal(v[[#]],v[[#]],r[[#]])
+; CHECK: v[[#]].h = vpacke(v[[#V1]].w,v[[#V0]].w)
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quic-akaryaki wrote:

In the baseline, it asserts. I have added a REQUIRES.

https://github.com/llvm/llvm-project/pull/159464