[llvm] [AMDGPU][X86][DAG] Avoid duplicate BinOp result from narrowing insert-extract sub-vector (PR #201056)

[Simon Pilgrim via llvm-commits]

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@@ -0,0 +1,29 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=amdgcn -mcpu=gfx1250 < %s | FileCheck --check-prefix=GFX1250 %s
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RKSimon wrote:

sufficient cpu coverage?

https://github.com/llvm/llvm-project/pull/201056