[Mlir-commits] [mlir] [MLIR][XeGPU] Add support for elementwise ops in Wg to Sg distribute pass [1/N] (PR #142797)

[Chao Chen]

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@@ -328,6 +331,63 @@ struct WgToSgPrefetchNdOp : public OpConversionPattern<xegpu::PrefetchNdOp> {
   }
 };
 
+// This pattern transforms elementwise ops in math/arith dialect
+struct WgToSgElementwiseOp : public ConversionPattern {
+  WgToSgElementwiseOp(MLIRContext *ctx)
+      : ConversionPattern(MatchAnyOpTypeTag(), /*benefit=*/1, ctx) {}
+
+  LogicalResult
+  matchAndRewrite(Operation *op, ArrayRef<ValueRange> operands,
+                  ConversionPatternRewriter &rewriter) const override {
+    // Only match ops with elementwise trait
+    if (!OpTrait::hasElementwiseMappableTraits(op))
+      return rewriter.notifyMatchFailure(op, "Not an elementwise op");
+
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chencha3 wrote:

worth to have check that the number of results is 1. 

https://github.com/llvm/llvm-project/pull/142797