[llvm] [DAGCombiner] Handle extending EXTRACT_VECTOR_ELTs in calculateByteProvider (PR #83963)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,17 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
+; RUN: llc < %s -mtriple=riscv64 -mattr=+v -verify-machineinstrs | FileCheck %s
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arsenm wrote:

Don't need -verify-machineinstrs

https://github.com/llvm/llvm-project/pull/83963