[llvm] [AMDGPU] Accept arbitrary sized sources in CalculateByteProvider (PR #70240)

[Matt Arsenault via llvm-commits]

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@@ -11133,6 +11146,7 @@ calculateByteProvider(const SDValue &Op, unsigned Index, unsigned Depth,
   }
 
   case AMDGPUISD::PERM: {
+    if (IsVec) return std::nullopt;
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arsenm wrote:

new line 

https://github.com/llvm/llvm-project/pull/70240