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

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• Hash : 280e79e1
  Author :
  Date : 2023-08-10T14:08:00
  

  Rescope globals only used in one function to function-local.
  
  We can demote global variables when they are only used in one function.
  This has performance implications on Metal.
  
  Bug: angleproject:8311
  Change-Id: Id666e6b167be771c14768cd73efa61fdacd897d4
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4771215
  Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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

• //
  // Copyright 2023 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.
  //
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_RESCOPEGLOBALVARIABLES_H_
  #define COMPILER_TRANSLATOR_TREEOPS_RESCOPEGLOBALVARIABLES_H_
  
  #include "common/angleutils.h"
  #include "compiler/translator/Compiler.h"
  
  namespace sh
  {
  
  // This function rescopes any globally-declared variable to be local to a function if the variable
  // is only used in one function.
  [[nodiscard]] bool RescopeGlobalVariables(TCompiler &compiler, TIntermBlock &root);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_RESCOPEGLOBALVARIABLES_H_
  

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