[llvm] AMDGPU/GlobalISel: Add tests for missing readanylane combines (PR #142788)

[Pierre van Houtryve via llvm-commits]

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@@ -646,6 +646,7 @@ RegBankLegalizeRules::RegBankLegalizeRules(const GCNSubtarget &_ST,
       .Any({{{UniB256, UniP1}, isAlign4 && isUL}, {{SgprB256}, {SgprP1}}})
       .Any({{{UniB512, UniP1}, isAlign4 && isUL}, {{SgprB512}, {SgprP1}}})
       .Any({{{UniB32, UniP1}, !isAlign4 || !isUL}, {{UniInVgprB32}, {SgprP1}}})
+      .Any({{{UniB64, UniP1}, !isAlign4 || !isUL}, {{UniInVgprB64}, {SgprP1}}})
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Pierre-vh wrote:

The PR title says it only adds tests but it also adds code, can you either rename the PR or split this off into a separate patch?

https://github.com/llvm/llvm-project/pull/142788