kc3-lang/angle/src/compiler/translator/tree_ops/ExpandIntegerPowExpressions.h

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• Hash : 472c74c6
  Author :
  Date : 2019-08-19T16:32:13
  

  Translator: Allow tree validation in children of TCompiler
  
  This is to be able to perform validation inside TranslatorVulkan, even
  if it's through ASSERTs.
  
  Additionally, every transformation is changed such that they do their
  validation themselves.  TIntermTraverser::updateTree() performs the
  validation, which indirectly validates many of three tree
  transformations.  Some of the more ancient transformations that don't
  use this function directly call TCompiler::validateAST.
  
  Bug: angleproject:2733
  Change-Id: Ie4af029d34e053c5ad1dc8c2c2568eecd625d344
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1761149
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/tree_ops/ExpandIntegerPowExpressions.h

• //
  // Copyright 2016 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.
  //
  // This mutating tree traversal works around a bug in the HLSL compiler optimizer with "pow" that
  // manifests under the following conditions:
  //
  // - If pow() has a literal exponent value
  // - ... and this value is integer or within 10e-6 of an integer
  // - ... and it is in {-4, -3, -2, 2, 3, 4, 5, 6, 7, 8}
  //
  // The workaround is to replace the pow with a series of multiplies.
  // See http://anglebug.com/851
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_EXPANDINTEGERPOWEXPRESSIONS_H_
  #define COMPILER_TRANSLATOR_TREEOPS_EXPANDINTEGERPOWEXPRESSIONS_H_
  
  #include "common/angleutils.h"
  
  namespace sh
  {
  
  class TCompiler;
  class TIntermNode;
  class TSymbolTable;
  
  ANGLE_NO_DISCARD bool ExpandIntegerPowExpressions(TCompiler *compiler,
                                                    TIntermNode *root,
                                                    TSymbolTable *symbolTable);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_EXPANDINTEGERPOWEXPRESSIONS_H_
  

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