1 files changed, 40 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/tree_ops/gl/RewriteRepeatedAssignToSwizzled.h b/gfx/angle/checkout/src/compiler/translator/tree_ops/gl/RewriteRepeatedAssignToSwizzled.h
new file mode 100644
index 0000000000..1ab9b7ebb8
--- /dev/null
+++ b/gfx/angle/checkout/src/compiler/translator/tree_ops/gl/RewriteRepeatedAssignToSwizzled.h
@@ -0,0 +1,40 @@
+//
+// Copyright 2018 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// RewriteRepeatedAssignToSwizzled.h: Rewrite expressions that assign an assignment to a swizzled
+// vector, like:
+//     v.x = z = expression;
+// to:
+//     z = expression;
+//     v.x = z;
+//
+// Note that this doesn't handle some corner cases: expressions nested inside other expressions,
+// inside loop headers, or inside if conditions.
+
+#ifndef COMPILER_TRANSLATOR_TREEOPS_GL_REWRITEREPEATEDASSIGNTOSWIZZLED_H_
+#define COMPILER_TRANSLATOR_TREEOPS_GL_REWRITEREPEATEDASSIGNTOSWIZZLED_H_
+
+#include "common/angleutils.h"
+
+namespace sh
+{
+
+class TCompiler;
+class TIntermBlock;
+
+#ifdef ANGLE_ENABLE_GLSL
+[[nodiscard]] bool RewriteRepeatedAssignToSwizzled(TCompiler *compiler, TIntermBlock *root);
+#else
+[[nodiscard]] ANGLE_INLINE bool RewriteRepeatedAssignToSwizzled(TCompiler *compiler,
+                                                                TIntermBlock *root)
+{
+    UNREACHABLE();
+    return false;
+}
+#endif
+
+}  // namespace sh
+
+#endif  // COMPILER_TRANSLATOR_TREEOPS_GL_REWRITEREPEATEDASSIGNTOSWIZZLED_H_