================
@@ -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
+ over to the new loop. Returns "failure" if the loop doesn't support
+ this transformation.
+
+ After the transformation, the ops inserted to the parent region of the
+ loop are guaranteed to be run only if the loop body runs at least one
+ iteration.
+
+ Note: Ops in the loop body might be rearranged because of loop rotating
+ to maintain the semantic. Terminators might be removed/added during
this
+ transformation. Also callers are not required to check the side-effect
+ of loop condition, so the transformation needs to consider that to make
+ sure the loop behavior is unchanged when moving the condtion out of the
----------------
pzread wrote:
Fixed.
https://github.com/llvm/llvm-project/pull/80331
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