[llvm] [DAGCombiner] Require same type of splat & element for build_vector (PR #88284)

[Simon Pilgrim via llvm-commits]

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@@ -0,0 +1,24 @@
+; RUN: llc < %s -mtriple=x86_64 -mattr=avx512bw | FileCheck %s
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RKSimon wrote:

Regenerate with utils/update_llc_test_checks.py

https://github.com/llvm/llvm-project/pull/88284