================
@@ -220,6 +220,31 @@ def LoopLikeOpInterface :
OpInterface<"LoopLikeOpInterface"> {
/*defaultImplementation=*/[{
return ::mlir::failure();
}]
+ >,
+ InterfaceMethod<[{
+ Add a zero-trip-check around the loop to check if the loop body is ever
+ run and return the new loop inside the check. The loop body is moved
----------------
pzread wrote:
Sometimes it is easier to create a new loop because we need to rotate the loop
(`while {}` -> `do {} while`); otherwise the condition ops will be run twice
and might have unwanted side effect. See the implementation of while loop as a
example: #80349
We can still rotate the loop without creating a new op, but that will involve
many tricky block arguments/operands updates. So I think it might be easier to
allow this method to return a new loop op.
https://github.com/llvm/llvm-project/pull/80331
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