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

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• Author : Jamie Madill
  Date : 2016-11-07 13:58:48
  Hash : 45bcc784
  Message : translator: Scope all classes with "sh". I was seeing an odd problem with our PoolAlloc conflicting with the glslang/Vulkan TIntermNode, so the fix was to move everything to a separate namespace. The bison grammars are also regenerated. No functional changes. BUG=angleproject:1576 Change-Id: I959c7afe4c092f0d458432c07b4dcee4d39513f3 Reviewed-on: https://chromium-review.googlesource.com/408267 Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/tests/compiler_tests/PruneUnusedFunctions_test.cpp

• //
  // Copyright (c) 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 function with the SH_PRUNE_UNUSED_FUNCTIONS compile flag
  //
  
  #include "angle_gl.h"
  #include "gtest/gtest.h"
  #include "GLSLANG/ShaderLang.h"
  #include "tests/test_utils/compiler_test.h"
  
  using namespace sh;
  
  namespace
  {
  
  class PruneUnusedFunctionsTest : public MatchOutputCodeTest
  {
    public:
      PruneUnusedFunctionsTest() : MatchOutputCodeTest(GL_FRAGMENT_SHADER, 0, SH_ESSL_OUTPUT) {}
  
    protected:
      void compile(const std::string &shaderString, bool prune)
      {
          int compilationFlags = SH_VARIABLES | (prune ? 0 : SH_DONT_PRUNE_UNUSED_FUNCTIONS);
          MatchOutputCodeTest::compile(shaderString, compilationFlags);
      }
  };
  
  // 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, true);
      EXPECT_TRUE(notFoundInCode("unused("));
      EXPECT_TRUE(foundInCode("main(", 1));
  
      compile(shaderString, false);
      EXPECT_TRUE(foundInCode("unused(", 2));
      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, true);
      EXPECT_TRUE(notFoundInCode("unused("));
      EXPECT_TRUE(foundInCode("main(", 1));
  
      compile(shaderString, false);
      EXPECT_TRUE(foundInCode("unused(", 1));
      EXPECT_TRUE(foundInCode("main(", 1));
  }
  
  // Check that used functions are not prunued (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, true);
      EXPECT_TRUE(foundInCode("used(", 3));
      EXPECT_TRUE(foundInCode("main(", 1));
  
      compile(shaderString, false);
      EXPECT_TRUE(foundInCode("used(", 3));
      EXPECT_TRUE(foundInCode("main(", 1));
  }
  
  }