old mode 100644
new mode 100755
--- a/gfx/angle/src/libANGLE/moz.build
+++ b/gfx/angle/src/libANGLE/moz.build
@@ -326,16 +326,17 @@ if CONFIG['MOZ_HAS_WINSDK_WITH_D3D']:
         'renderer/d3d/d3d11/VertexBuffer11.cpp',
     ]
 if CONFIG['MOZ_HAS_WINSDK_WITH_D3D']:
     SOURCES += [
         'renderer/d3d/d3d11/SwapChain11.cpp',
         'renderer/d3d/d3d11/win32/NativeWindow11Win32.cpp',
     ]
 
+CXXFLAGS += CONFIG['SSE2_FLAGS']
 
 if CONFIG['GNU_CXX']:
     CXXFLAGS += [
         '-Wno-attributes',
         '-Wno-shadow',
         '-Wno-sign-compare',
         '-Wno-unknown-pragmas',
         '-Wno-unreachable-code',