Change Pass:getFunction() to return pointer instead of ref - NFC

- change this for consistency - everything else similar takes/returns a
  Function pointer - the FuncBuilder ctor,
  Block/Value/Instruction::getFunction(), etc.
- saves a whole bunch of &s everywhere

PiperOrigin-RevId: 236928761

1 files changed, 4 insertions, 4 deletions

diff --git a/mlir/lib/Transforms/StripDebugInfo.cpp b/mlir/lib/Transforms/StripDebugInfo.cpp
index 47244f94ac9..f8f90c0cdb1 100644
--- a/mlir/lib/Transforms/StripDebugInfo.cpp
+++ b/mlir/lib/Transforms/StripDebugInfo.cpp
@@ -29,12 +29,12 @@ struct StripDebugInfo : public FunctionPass<StripDebugInfo> {
 } // end anonymous namespace
 
 void StripDebugInfo::runOnFunction() {
-  Function &func = getFunction();
-  UnknownLoc unknownLoc = UnknownLoc::get(func.getContext());
+  Function *func = getFunction();
+  UnknownLoc unknownLoc = UnknownLoc::get(func->getContext());
 
   // Strip the debug info from the function and its instructions.
-  func.setLoc(unknownLoc);
-  func.walk([&](Instruction *inst) { inst->setLoc(unknownLoc); });
+  func->setLoc(unknownLoc);
+  func->walk([&](Instruction *inst) { inst->setLoc(unknownLoc); });
 }
 
 /// Creates a pass to strip debug information from a function.