[llvm] [AMDGPU] IGLP: Fixes for VMEM load detection and unsigned int handling (PR #135090)

[Robert Imschweiler via llvm-commits]

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@@ -321,6 +321,28 @@ entry:
   ret void
 }
 
+; Check fixes for:
+; - detection of VMEM_READS which are FLAT loads.
+; - unsigned int underflows in MFMASmallGemmSingleWaveOpt::applyIGLPStrategy.
+; - resetting global static DSWCounters for new runs.
+; (reduced fuzzer-generated test case)
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ro-i wrote:

I mean, maybe not for every unsigned int underflow I detected there. (I detected a lot while reducing the initial fuzzer test, but I wasn't sure whether it makes sense to try to find a specific test case for every issue I encountered...)

https://github.com/llvm/llvm-project/pull/135090