diff --git a/examples/TraceDialect/.gitignore b/examples/TraceDialect/.gitignore
new file mode 100644
index 000000000..b149ed6a1
--- /dev/null
+++ b/examples/TraceDialect/.gitignore
@@ -0,0 +1,6 @@
+log.mlir
+log.ll
+log.s
+log.o
+a.out
+
diff --git a/midend/lib/Conversion/LowerTrace/LowerTracePass.cpp b/midend/lib/Conversion/LowerTrace/LowerTracePass.cpp
index ce3dae29f..e3d1ee4e3 100644
--- a/midend/lib/Conversion/LowerTrace/LowerTracePass.cpp
+++ b/midend/lib/Conversion/LowerTrace/LowerTracePass.cpp
@@ -43,7 +43,7 @@ namespace {
 class TraceStartLowering : public OpRewritePattern<trace::TimeStartOp> {
 public:
   using OpRewritePattern<trace::TimeStartOp>::OpRewritePattern;
-
+  // TODO: will use our own runtime functions.
   LogicalResult matchAndRewrite(trace::TimeStartOp op,
                                 PatternRewriter &rewriter) const override {
     auto loc = op.getLoc();
@@ -77,7 +77,7 @@ class TraceStartLowering : public OpRewritePattern<trace::TimeStartOp> {
 class TraceEndLowering : public OpRewritePattern<trace::TimeEndOp> {
 public:
   using OpRewritePattern<trace::TimeEndOp>::OpRewritePattern;
-
+  // TODO: will use our own runtime functions.
   LogicalResult matchAndRewrite(trace::TimeEndOp op,
                                 PatternRewriter &rewriter) const override {
     auto loc = op.getLoc();
diff --git a/midend/lib/Dialect/Trace/TraceDialect.cpp b/midend/lib/Dialect/Trace/TraceDialect.cpp
index f38b64760..3143332fa 100644
--- a/midend/lib/Dialect/Trace/TraceDialect.cpp
+++ b/midend/lib/Dialect/Trace/TraceDialect.cpp
@@ -1,5 +1,4 @@
-//===- TraceDialect.cpp - Trace Dialect Definition-------------------*- C++
-//-*-===//
+//===- TraceDialect.cpp - Trace Dialect Definition----------------*- C++-*-===//
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/midend/lib/Dialect/Trace/TraceOps.cpp b/midend/lib/Dialect/Trace/TraceOps.cpp
index d66fa583e..2ed957221 100644
--- a/midend/lib/Dialect/Trace/TraceOps.cpp
+++ b/midend/lib/Dialect/Trace/TraceOps.cpp
@@ -1,5 +1,4 @@
-//===- TraceOps.cpp - Trace Dialect Ops -----------------------------*- C++
-//-*-===//
+//===- TraceOps.cpp - Trace Dialect Ops --------------------------*- C++-*-===//
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.