[llvm] [GlobalISel] Combine [S,U]SUBO (PR #116489)

[Amara Emerson via llvm-commits]

Thorsten =?utf-8?q?Schütt?= <schuett at gmail.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/116489 at github.com>


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@@ -1901,6 +1907,13 @@ def cmp_combines: GICombineGroup<[
   redundant_binop_in_equality
 ]>;
 
+
+def artifact_combines: GICombineGroup<[
+  merge_combines,
+  match_addos,
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aemerson wrote:

That doesn't make them artifacts. There are lots of instructions that the legalized builds like loads/stores but those aren't artifacts either.

https://github.com/llvm/llvm-project/pull/116489