kc3-lang/angle/src/tests/compiler_tests/PruneUnusedFunctions_test.cpp

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• Hash : 02e7f967
  Author :
  Date : 2023-05-25T14:54:49
  

  Translator: Remove the "variables" option
  
  Variable collection is invariably enabled by the front-end as well as
  other major users of ANGLE such as Firefox.  All translator backends
  except GLSL force-enable variable collection either way.
  
  This change removes this compile option and enables variable collection
  unconditionally.
  
  The flag itself remains in ShCompileOptions until references to it are
  removed from Chromium.
  
  Bug: chromium:1447314
  Change-Id: I4d3b30c1bfbd345c5ad269abc62c0a6a59de2f56
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4568524
  Auto-Submit: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/tests/compiler_tests/PruneUnusedFunctions_test.cpp

• //
  // Copyright 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.
  //
  // PruneUnusedFunctions_test.cpp:
  //   Test for the pruning of unused functions
  //
  
  #include "GLSLANG/ShaderLang.h"
  #include "angle_gl.h"
  #include "gtest/gtest.h"
  #include "tests/test_utils/compiler_test.h"
  
  using namespace sh;
  
  namespace
  {
  
  class PruneUnusedFunctionsTest : public MatchOutputCodeTest
  {
    public:
      PruneUnusedFunctionsTest() : MatchOutputCodeTest(GL_FRAGMENT_SHADER, SH_ESSL_OUTPUT) {}
  
    protected:
      void compile(const std::string &shaderString)
      {
          ShCompileOptions compileOptions = {};
  
          MatchOutputCodeTest::compile(shaderString, compileOptions);
      }
  };
  
  // Check that unused function and prototypes are removed iff the options is set
  TEST_F(PruneUnusedFunctionsTest, UnusedFunctionAndProto)
  {
      const std::string &shaderString =
          "precision mediump float;\n"
          "float unused(float a);\n"
          "void main() {\n"
          "    gl_FragColor = vec4(1.0);\n"
          "}\n"
          "float unused(float a) {\n"
          "    return a;\n"
          "}\n";
      compile(shaderString);
      EXPECT_TRUE(notFoundInCode("unused("));
      EXPECT_TRUE(foundInCode("main(", 1));
  }
  
  // Check that unimplemented prototypes are removed iff the options is set
  TEST_F(PruneUnusedFunctionsTest, UnimplementedPrototype)
  {
      const std::string &shaderString =
          "precision mediump float;\n"
          "float unused(float a);\n"
          "void main() {\n"
          "    gl_FragColor = vec4(1.0);\n"
          "}\n";
      compile(shaderString);
      EXPECT_TRUE(notFoundInCode("unused("));
      EXPECT_TRUE(foundInCode("main(", 1));
  }
  
  // Check that used functions are not pruned (duh)
  TEST_F(PruneUnusedFunctionsTest, UsedFunction)
  {
      const std::string &shaderString =
          "precision mediump float;\n"
          "float used(float a);\n"
          "void main() {\n"
          "    gl_FragColor = vec4(used(1.0));\n"
          "}\n"
          "float used(float a) {\n"
          "    return a;\n"
          "}\n";
      compile(shaderString);
      EXPECT_TRUE(foundInCode("used(", 3));
      EXPECT_TRUE(foundInCode("main(", 1));
  }
  
  }  // namespace
  

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