Add a function pass to strip debug info from functions and instructions.

PiperOrigin-RevId: 230654315

1 files changed, 50 insertions, 0 deletions

diff --git a/mlir/lib/Transforms/StripDebugInfo.cpp b/mlir/lib/Transforms/StripDebugInfo.cpp
new file mode 100644
index 00000000000..a6fa2186b15
--- /dev/null
+++ b/mlir/lib/Transforms/StripDebugInfo.cpp
@@ -0,0 +1,50 @@
+//===- StripDebugInfo.cpp - Pass to strip debug information ---------------===//
+//
+// Copyright 2019 The MLIR Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// =============================================================================
+
+#include "mlir/IR/Function.h"
+#include "mlir/Pass.h"
+#include "mlir/Transforms/Passes.h"
+
+using namespace mlir;
+
+namespace {
+struct StripDebugInfo : public FunctionPass {
+  StripDebugInfo() : FunctionPass(&StripDebugInfo::passID) {}
+
+  PassResult runOnFunction(Function *f) override;
+
+  static char passID;
+};
+} // end anonymous namespace
+
+char StripDebugInfo::passID = 0;
+
+PassResult StripDebugInfo::runOnFunction(Function *f) {
+  UnknownLoc unknownLoc = UnknownLoc::get(f->getContext());
+
+  // Strip the debug info from the function and its instructions.
+  f->setLoc(unknownLoc);
+  f->walkInsts([&](Instruction *inst) { inst->setLoc(unknownLoc); });
+  return success();
+}
+
+/// Creates a pass to strip debug information from a function.
+FunctionPass *mlir::createStripDebugInfoPass() { return new StripDebugInfo(); }
+
+static PassRegistration<StripDebugInfo>
+    pass("strip-debug-info",
+         "Strip debug info from functions and instructions");