================
@@ -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
----------------
pzread wrote:
I think whether the loop rotation is needed (or possible) is the implementation
details of each type of loop. `scf.while` needs it because the before block is
in the loop and can contain ops with side-effects. `scf.for` is simpler as the
`lb < ub` should have no side-effect and lightweight, which can be run twice
(for `scf.if` and the for loop)
https://github.com/llvm/llvm-project/pull/80331
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