[llvm] [InstCombine] Convert load from LUT into a select (PR #98339)

[Nikita Popov via llvm-commits]

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@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -passes=instcombine -S -data-layout="p:32:32:32-p1:16:16:16-p2:128:128:128:32-n8:16:32:64" < %s | FileCheck %s
+; RUN: opt -passes="instcombine<max-iterations=2>" -S -data-layout="p:32:32:32-p1:16:16:16-p2:128:128:128:32-n8:16:32:64" < %s | FileCheck %s
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nikic wrote:

> Maybe should explicitly call ConstantFoldConstant on the arms?

Can you please try this? This isn't really something that should require multiple InstCombine iterations...

https://github.com/llvm/llvm-project/pull/98339