1 //
2 // Copyright 2018 The ANGLE Project Authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file.
5 //
6 // RewriteRepeatedAssignToSwizzled.h: Rewrite expressions that assign an assignment to a swizzled
7 // vector, like:
8 //     v.x = z = expression;
9 // to:
10 //     z = expression;
11 //     v.x = z;
12 //
13 // Note that this doesn't handle some corner cases: expressions nested inside other expressions,
14 // inside loop headers, or inside if conditions.
15 
16 #ifndef COMPILER_TRANSLATOR_TREEOPS_GL_REWRITEREPEATEDASSIGNTOSWIZZLED_H_
17 #define COMPILER_TRANSLATOR_TREEOPS_GL_REWRITEREPEATEDASSIGNTOSWIZZLED_H_
18 
19 #include "common/angleutils.h"
20 
21 namespace sh
22 {
23 
24 class TCompiler;
25 class TIntermBlock;
26 
27 #ifdef ANGLE_ENABLE_GLSL
28 ANGLE_NO_DISCARD bool RewriteRepeatedAssignToSwizzled(TCompiler *compiler, TIntermBlock *root);
29 #else
RewriteRepeatedAssignToSwizzled(TCompiler * compiler,TIntermBlock * root)30 ANGLE_NO_DISCARD ANGLE_INLINE bool RewriteRepeatedAssignToSwizzled(TCompiler *compiler,
31                                                                    TIntermBlock *root)
32 {
33     UNREACHABLE();
34     return false;
35 }
36 #endif
37 
38 }  // namespace sh
39 
40 #endif  // COMPILER_TRANSLATOR_TREEOPS_GL_REWRITEREPEATEDASSIGNTOSWIZZLED_H_
41