[clang-diff] Make printing of matches optional

Reviewers: arphaman

Subscribers: klimek

Differential Revision: https://reviews.llvm.org/D36181

llvm-svn: 311237

2 files changed, 5 insertions, 1 deletions

diff --git a/clang/test/Tooling/clang-diff-args.test b/clang/test/Tooling/clang-diff-args.test
index a051c3ba79b..a4ce1ea9250 100644
--- a/clang/test/Tooling/clang-diff-args.test
+++ b/clang/test/Tooling/clang-diff-args.test
@@ -6,3 +6,7 @@ check adding compiler cflags
 RUN: clang-diff -ast-dump -extra-arg=-Da=X        %t.cpp -- 2>&1 | FileCheck %s
 RUN: clang-diff -ast-dump -extra-arg-before=-Da=X %t.cpp -- 2>&1 | FileCheck %s
 RUN: clang-diff -ast-dump %t.cpp -- 2>&1 -Da=X | FileCheck %s
+
+NOMATCH-CHECK-NOT: {{.}}
+RUN: clang-diff %S/clang-diff-ast.cpp %S/clang-diff-ast.cpp -- 2>&1 -std=c++11 \
+RUN: | FileCheck -check-prefix=NOMATCH-CHECK -allow-empty %s
diff --git a/clang/test/Tooling/clang-diff-basic.cpp b/clang/test/Tooling/clang-diff-basic.cpp
index e70171509d0..23534749e17 100644
--- a/clang/test/Tooling/clang-diff-basic.cpp
+++ b/clang/test/Tooling/clang-diff-basic.cpp
@@ -1,6 +1,6 @@
 // RUN: %clang_cc1 -E %s > %t.src.cpp
 // RUN: %clang_cc1 -E %s > %t.dst.cpp -DDEST
-// RUN: clang-diff %t.src.cpp %t.dst.cpp -- | FileCheck %s
+// RUN: clang-diff -dump-matches %t.src.cpp %t.dst.cpp -- | FileCheck %s
 
 #ifndef DEST
 namespace src {