[llvm] Bug fixes for ISelLowering for HVX (PR #164416)

[Alexey Karyakin via llvm-commits]

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@@ -0,0 +1,89 @@
+;; RUN: llc --mtriple=hexagon -mattr=+hvxv79,+hvx-length128b %s -o - | FileCheck %s
+;; Sanity check for lowering masked scatter without assertion errors.
+
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quic-akaryaki wrote:

Is it one test case for two different bugs? Can it be simplified so it's clear what the problem is? I guess there should be two separate tests.

https://github.com/llvm/llvm-project/pull/164416