[llvm] AMDGPU/GlobalISel: RegBankLegalize rules for s_bitreplicate (PR #189138)

[Matt Arsenault via llvm-commits]

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+// End-to-end test for the divergent VALU expansion of the AMDGPU
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arsenm wrote:

> We generally don't add execution tests for compiler-related changes.

This isn't a good thing 

> The idea is that as long as the generated code is correct, it should behave correctly at runtime. 

How do you know with these long sequences if it's correct?



https://github.com/llvm/llvm-project/pull/189138