[Mlir-commits] [mlir] [MLIR][Arith] add and(a, or(a, b)) folder (PR #138998)

[William Moses]

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@@ -896,6 +896,18 @@ OpFoldResult arith::AndIOp::fold(FoldAdaptor adaptor) {
   if (Value result = foldAndIofAndI(*this))
     return result;
 
+  /// and(a, or(a, b)) -> a
+  for (int i = 0; i < 2; i++) {
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wsmoses wrote:

so the reason that might be hard is that we need both the original operand, and also the "other" operand. In the loop form that can be written as get operand[i] and operand[1-i], and/or operand[i] and i == 0 ? operand[1] : operand[0]. Not sure how to do that as a single foreach iterator

https://github.com/llvm/llvm-project/pull/138998