[llvm] [AMDGPU] Reset WavesPerEU in AAAMDWavesPerEU::initialize (PR #114162)

[Matt Arsenault via llvm-commits]

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@@ -843,7 +843,9 @@ struct AAAMDWavesPerEU : public AAAMDSizeRangeAttribute {
                AssumedGroupSize->getAssumed().getUpper().getZExtValue() - 1});
 
       ConstantRange Range(APInt(32, Min), APInt(32, Max + 1));
-      intersectKnown(Range);
+      
+      // Reset in case this is subsequent run and CallGraph is updated
+      *this &= Range;
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arsenm wrote:

Can you assert this is a valid state after this point 

https://github.com/llvm/llvm-project/pull/114162