================
@@ -544,7 +545,10 @@ class ThreeOpFragSDAG<SDPatternOperator op1,
SDPatternOperator op2> : PatFrag<
let PredicateCodeUsesOperands = 1;
}
-class ThreeOpFrag<SDPatternOperator op1, SDPatternOperator op2> :
ThreeOpFragSDAG<op1, op2> {
+// Matches (op2 (op1 x, y), z) if op1IsRight = 0 and
+// matches (op2 z, (op1, x, y)) if op1IsRight = 1.
----------------
arsenm wrote:
You shouldn't need to explicitly commute the patterns, the pattern generator
should do this for commutable nodes
https://github.com/llvm/llvm-project/pull/143881
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