[flang-commits] [flang] [mlir] [mlir][TilingInterface] Use `LoopLikeOpInterface` in tiling using SCF to unify tiling with `scf.for` and `scf.forall`. (PR #77874)

[Matthias Springer via flang-commits]

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@@ -78,21 +79,22 @@ LogicalResult detail::verifyLoopLikeOpInterface(Operation *op) {
 
   // Verify types of inits/iter_args/yielded values/loop results.
   int64_t i = 0;
-  for (const auto it :
-       llvm::zip_equal(loopLikeOp.getInits(), loopLikeOp.getRegionIterArgs(),
-                       loopLikeOp.getYieldedValues())) {
-    if (std::get<0>(it).getType() != std::get<1>(it).getType())
-      return op->emitOpError(std::to_string(i))
-             << "-th init and " << i
-             << "-th region iter_arg have different type: "
-             << std::get<0>(it).getType()
-             << " != " << std::get<1>(it).getType();
-    if (std::get<1>(it).getType() != std::get<2>(it).getType())
-      return op->emitOpError(std::to_string(i))
-             << "-th region iter_arg and " << i
-             << "-th yielded value have different type: "
-             << std::get<1>(it).getType()
-             << " != " << std::get<2>(it).getType();
+  auto yieldedValues = loopLikeOp.getYieldedValues();
+  for (const auto [index, init, regionIterArg] :
+       llvm::enumerate(loopLikeOp.getInits(), loopLikeOp.getRegionIterArgs())) {
+    if (init.getType() != regionIterArg.getType())
+      return op->emitOpError(std::to_string(index))
+             << "-th init and " << index
+             << "-th region iter_arg have different type: " << init.getType()
+             << " != " << regionIterArg.getType();
+    if (!yieldedValues.empty()) {
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matthias-springer wrote:

Same here: `!loopLikeOp.getYieldedValuesMutable().has_value()`.

https://github.com/llvm/llvm-project/pull/77874