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

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• Hash : 87c35883
  Author :
  Date : 2017-10-19T15:19:38
  

  Prune no-op statements with a single traverser
  
  We put pruning literal statements and pruning empty declarations in
  the same traverser, as some of the required logic is the same. This
  pruning of no-ops is always done as one of the first processing steps
  after parsing, so further processing of the AST is simpler.
  
  Since we now prune pure literals before removing no-op cases from the
  end of switch statements, we also don't need any sort of special
  handling for switch statements in pruning pure literals.
  
  BUG=angleproject:2181
  TEST=angle_unittests
  
  Change-Id: I2d86efaeb80baab63ac3cc803f3fd9e7ec02908a
  Reviewed-on: https://chromium-review.googlesource.com/727803
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  

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• src/compiler/translator/PruneNoOps.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.
  //
  // PruneNoOps.h: The PruneNoOps function prunes:
  //   1. Empty declarations "int;". Empty declarators will be pruned as well, so for example:
  //        int , a;
  //      is turned into
  //        int a;
  //   2. Literal statements: "1.0;". The ESSL output doesn't define a default precision for float,
  //      so float literal statements would end up with no precision which is invalid ESSL.
  
  #ifndef COMPILER_TRANSLATOR_PRUNENOOPS_H_
  #define COMPILER_TRANSLATOR_PRUNENOOPS_H_
  
  namespace sh
  {
  class TIntermBlock;
  
  void PruneNoOps(TIntermBlock *root);
  }
  
  #endif  // COMPILER_TRANSLATOR_PRUNENOOPS_H_
  

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