[llvm] [AMDGPU] Add intrinsic readanylane (PR #115696)

[Jay Foad via llvm-commits]

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@@ -1081,6 +1081,7 @@ GCNTTIImpl::instCombineIntrinsic(InstCombiner &IC, IntrinsicInst &II) const {
   }
   case Intrinsic::amdgcn_permlane64:
   case Intrinsic::amdgcn_readfirstlane:
+  case Intrinsic::amdgcn_readanylane:
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jayfoad wrote:

Add some tests for this in `test/Transforms/InstCombine/AMDGPU/amdgcn-intrinsics.ll`

https://github.com/llvm/llvm-project/pull/115696