kc3-lang/angle/src/compiler/translator/TranslatorMetalDirect/SeparateCompoundExpressions.h

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• Author : Kyle Piddington
  Date : 2021-04-26 16:56:15
  Hash : d7aa0130
  Message : Upstream Apple's direct-to-Metal backend: compile translator. This change is meant to merge the translator changes from Apple's direct-to-Metal backend. Taken from Kyle Piddington's CL: https://chromium-review.googlesource.com/c/angle/angle/+/2857366/ The goal of this CL is to merge the translator code in a state that compiles, but not to switch the Metal backend over to use this translator backend yet. Bug: angleproject:5505 Change-Id: I68a6354604498cd5fd1eb96c13fc56f3b38f2bd0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2897536 Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>

• src/compiler/translator/TranslatorMetalDirect/SeparateCompoundExpressions.h

• //
  // Copyright 2020 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_TRANSLATORMETALDIRECT_SEPARATECOMPOUNDEXPRESSIONS_H_
  #define COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_SEPARATECOMPOUNDEXPRESSIONS_H_
  
  #include "common/angleutils.h"
  #include "compiler/translator/Compiler.h"
  #include "compiler/translator/TranslatorMetalDirect/IdGen.h"
  #include "compiler/translator/TranslatorMetalDirect/SymbolEnv.h"
  
  namespace sh
  {
  
  // Transforms code to (usually) have most one non-terminal expression per statement.
  // This also rewrites (&&), (||), and (?:) into raw if/if-not/if-else statements, respectively.
  //
  // e.g.
  //    int x = 6 + foo(y, bar());
  // becomes
  //    auto _1 = bar();
  //    auto _2 = foo(y, _1);
  //    auto _3 = 6 + _2;
  //    int x = _3;
  //
  // WARNING:
  //    - This does not rewrite object indexing operators as a whole (e.g. foo.x, foo[x]), but will
  //      rewrite the arguments to the operator (when applicable).
  //      e.g.
  //        foo(getVec()[i + 2] + 1);
  //      becomes
  //        auto _1 = getVec();
  //        auto _2 = i + 2;
  //        auto _3 = _1[_2] + 1; // Index operator remains in (+) expr here.
  //        foo(_3);
  //
  ANGLE_NO_DISCARD bool SeparateCompoundExpressions(TCompiler &compiler,
                                                    SymbolEnv &symbolEnv,
                                                    IdGen &idGen,
                                                    TIntermBlock &root);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_SEPARATECOMPOUNDEXPRESSIONS_H_