diff --git a/llvm/test/tools/opt-viewer/Outputs/basic/basic_or.c.html b/llvm/test/tools/opt-viewer/Outputs/basic/basic_or.c.html
index a97b12855bcd..0a706b631c98 100644
--- a/llvm/test/tools/opt-viewer/Outputs/basic/basic_or.c.html
+++ b/llvm/test/tools/opt-viewer/Outputs/basic/basic_or.c.html
@@ -1,5 +1,6 @@
+
diff --git a/llvm/test/tools/opt-viewer/Outputs/basic/basic_or.h.html b/llvm/test/tools/opt-viewer/Outputs/basic/basic_or.h.html
index 171bb8355633..6ca5a18f29d9 100644
--- a/llvm/test/tools/opt-viewer/Outputs/basic/basic_or.h.html
+++ b/llvm/test/tools/opt-viewer/Outputs/basic/basic_or.h.html
@@ -1,5 +1,6 @@
+
diff --git a/llvm/test/tools/opt-viewer/Outputs/basic/index.html b/llvm/test/tools/opt-viewer/Outputs/basic/index.html
index 9fe9a4a7adf7..3424a9a1f0e6 100644
--- a/llvm/test/tools/opt-viewer/Outputs/basic/index.html
+++ b/llvm/test/tools/opt-viewer/Outputs/basic/index.html
@@ -1,5 +1,6 @@
+
diff --git a/llvm/test/tools/opt-viewer/Outputs/suppress/index.html b/llvm/test/tools/opt-viewer/Outputs/suppress/index.html
index 5648b4b2d4e8..158bdd4c5eb9 100644
--- a/llvm/test/tools/opt-viewer/Outputs/suppress/index.html
+++ b/llvm/test/tools/opt-viewer/Outputs/suppress/index.html
@@ -1,5 +1,6 @@
+
diff --git a/llvm/test/tools/opt-viewer/Outputs/suppress/s.swift.html b/llvm/test/tools/opt-viewer/Outputs/suppress/s.swift.html
index f3d43c82b59e..eae4c4f56102 100644
--- a/llvm/test/tools/opt-viewer/Outputs/suppress/s.swift.html
+++ b/llvm/test/tools/opt-viewer/Outputs/suppress/s.swift.html
@@ -1,5 +1,6 @@
+
diff --git a/llvm/test/tools/opt-viewer/Outputs/unicode-function-name/index.html b/llvm/test/tools/opt-viewer/Outputs/unicode-function-name/index.html
index 3b13be6965ef..e91bf0ea4f27 100644
--- a/llvm/test/tools/opt-viewer/Outputs/unicode-function-name/index.html
+++ b/llvm/test/tools/opt-viewer/Outputs/unicode-function-name/index.html
@@ -1,5 +1,6 @@
+
diff --git a/llvm/test/tools/opt-viewer/Outputs/unicode-function-name/s.swift.html b/llvm/test/tools/opt-viewer/Outputs/unicode-function-name/s.swift.html
index cae6add04819..470c7f8061a0 100644
--- a/llvm/test/tools/opt-viewer/Outputs/unicode-function-name/s.swift.html
+++ b/llvm/test/tools/opt-viewer/Outputs/unicode-function-name/s.swift.html
@@ -1,5 +1,6 @@
+
diff --git a/llvm/tools/opt-viewer/opt-viewer.py b/llvm/tools/opt-viewer/opt-viewer.py
index 4483b94fc7fe..27b36064ced9 100755
--- a/llvm/tools/opt-viewer/opt-viewer.py
+++ b/llvm/tools/opt-viewer/opt-viewer.py
@@ -130,6 +130,7 @@ class SourceFileRenderer:
print('''
+
@@ -173,6 +174,7 @@ class IndexRenderer:
def render(self, all_remarks):
print('''
+