[mlir] NFC: work around gcc-aarch64 v8.3 compilation issue in getRegionBranchSuccessorOperands implementation.

chsigg · chsigg · commit 25671db3d343 · 2022-12-28T12:23:37.000+01:00
diff --git a/mlir/lib/Interfaces/ControlFlowInterfaces.cpp b/mlir/lib/Interfaces/ControlFlowInterfaces.cpp
@@ -394,5 +394,7 @@ std::optional<OperandRange>
 mlir::getRegionBranchSuccessorOperands(Operation *operation,
                                        std::optional<unsigned> regionIndex) {
   auto range = getMutableRegionBranchSuccessorOperands(operation, regionIndex);
-  return range ? std::optional<OperandRange>(*range) : std::nullopt;
+  if (range)
+    return static_cast<OperandRange>(*range);
+  return std::nullopt;
 }

Original file line number	Diff line number	Diff line change
`@@ -394,5 +394,7 @@ std::optional<OperandRange>`
`394`	`394`	`mlir::getRegionBranchSuccessorOperands(Operation *operation,`
`395`	`395`	`std::optional<unsigned> regionIndex) {`
`396`	`396`	`auto range = getMutableRegionBranchSuccessorOperands(operation, regionIndex);`
`397`		`- return range ? std::optional<OperandRange>(*range) : std::nullopt;`
	`397`	`+ if (range)`
	`398`	`+ return static_cast<OperandRange>(*range);`
	`399`	`+ return std::nullopt;`
`398`	`400`	`}`