[PATCH] D153316: [AArch64][SelectionDAG] fix infinite loop caused by legalizing & combining CONCAT_VECTORS

[Fangrui Song via Phabricator via llvm-commits]

MaskRay accepted this revision.
MaskRay added inline comments.


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Comment at: llvm/test/CodeGen/AArch64/dag-combine-concat-vectors.ll:1
+; RUN: llc -mtriple=aarch64 -mattr=+sve < %s | FileCheck %s
+
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Run `PATH=$build_dir/bin:$PATH llvm-project/llvm/utils/update_llc_test_checks.py dag-combine-concat-vectors.ll` to regenerate this test.

https://maskray.me/blog/2021-08-08-toolchain-testing "A regression test which simply runs the compiler and expects it not to crash has low utilization. It is often better to additionally test some properties of the produced object file."

The comment can be simplified:

> Test that we do not end in an infinite loop https://github.com/llvm/llvm-project/issues/63322


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  https://reviews.llvm.org/D153316/new/

https://reviews.llvm.org/D153316