[Mlir-commits] [mlir] [mlir][SCF] Skip dynamic front-peeling for non-index loops (PR #218238)

[Matthias Springer]

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@@ -236,6 +236,11 @@ LogicalResult mlir::scf::peelForLoopFirstIteration(RewriterBase &b, ForOp forOp,
   if (lbInt && ubInt && stepInt && ceil(float(*ubInt - *lbInt) / *stepInt) <= 1)
     return failure();
 
+  // The peeling bound (%lb + %step) is computed with affine.apply, which
+  // accepts only index operands.
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matthias-springer wrote:

nit: Add comment why you are checking for `(!lbInt || !stepInt)`.

https://github.com/llvm/llvm-project/pull/218238