kc3-lang/angle/src/compiler/translator/RemoveSwitchFallThrough.h

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• Hash : 89a69a03
  Author :
  Date : 2017-10-23T12:20:45
  

  Generate performance warnings in HLSL translation
  
  Generate performance warnings for some code that undergoes heavy
  emulation when translated to HLSL:
  1. Dynamic indexing of vectors and matrices.
  2. Non-empty fall-through cases in switch/case.
  
  The warnings are generated only when code is translated to HLSL.
  Generating them in the parsing stage would add too much maintenance
  burden.
  
  Improves switch statement fall-through handling in cases where an
  empty fall-through case follows a non-empty one so that extra
  performance warnings are not generated.
  
  BUG=angleproject:1116
  
  Change-Id: I7c85d78fe7c4f8e6042bda72ceaaf6e37dadfe6c
  Reviewed-on: https://chromium-review.googlesource.com/732986
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  

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• src/compiler/translator/RemoveSwitchFallThrough.h

• //
  // Copyright (c) 2002-2015 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.
  //
  // RemoveSwitchFallThrough.h: Remove fall-through from switch statements.
  // Note that it is unsafe to do further AST transformations on the AST generated
  // by this function. It leaves duplicate nodes in the AST making replacements
  // unreliable.
  
  #ifndef COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_
  #define COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_
  
  namespace sh
  {
  
  class TIntermBlock;
  class PerformanceDiagnostics;
  
  // When given a statementList from a switch AST node, return an updated
  // statementList that has fall-through removed.
  TIntermBlock *RemoveSwitchFallThrough(TIntermBlock *statementList,
                                        PerformanceDiagnostics *perfDiagnostics);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_
  

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