eliminating g++ warnings (#105520)

fschlimb · MacDue · rengolin · web-flow · commit 48c1bb60cd9d · 2024-10-18T21:20:47.000+01:00
Eliminating g++ warnings. Mostly declaring "[[maybe_unused]]", adding
return statements where missing and fixing casts.

rengolin

---------

Co-authored-by: Benjamin Maxwell &lt;macdue@dueutil.tech&gt;
Co-authored-by: Renato Golin &lt;rengolin@systemcall.eu&gt;
diff --git a/mlir/lib/CAPI/IR/IR.cpp b/mlir/lib/CAPI/IR/IR.cpp
@@ -736,6 +736,7 @@ static mlir::WalkResult unwrap(MlirWalkResult result) {
   case MlirWalkResultSkip:
     return mlir::WalkResult::skip();
   }
+  llvm_unreachable("unknown result in WalkResult::unwrap");
 }
 
 void mlirOperationWalk(MlirOperation op, MlirOperationWalkCallback callback,

Original file line number	Diff line number	Diff line change
`@@ -736,6 +736,7 @@ static mlir::WalkResult unwrap(MlirWalkResult result) {`
`736`	`736`	`case MlirWalkResultSkip:`
`737`	`737`	`return mlir::WalkResult::skip();`
`738`	`738`	`}`
	`739`	`+ llvm_unreachable("unknown result in WalkResult::unwrap");`
`739`	`740`	`}`
`740`	`741`
`741`	`742`	`void mlirOperationWalk(MlirOperation op, MlirOperationWalkCallback callback,`