Function TEST

test/opt/compact_ids_test.cpp:130–181

}

TEST(CompactIds, InstructionResultIsUpdated) {
  // For https://github.com/KhronosGroup/SPIRV-Tools/issues/827
  // In that bug, the compact Ids pass was directly updating the result Id
  // word for an OpFunction instruction, but not updating the cached
  // result_id_ in that Instruction object.
  //
  // This test is a bit cheesy.  We don't expose internal interfaces enough
  // to see the inconsistency.  So reproduce the original scenario, with
  // compact ids followed by a pass that trips up on the inconsistency.

  const std::string input(R"(OpCapability Shader
OpMemoryModel Logical Simple
OpEntryPoint GLCompute %100 "main"
%200 = OpTypeVoid
%300 = OpTypeFunction %200
%100 = OpFunction %200 None %300
%400 = OpLabel
OpReturn
OpFunctionEnd
)");

  std::vector<uint32_t> binary;
  const spv_target_env env = SPV_ENV_UNIVERSAL_1_0;
  spvtools::SpirvTools tools(env);
  auto assembled = tools.Assemble(
      input, &binary, SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
  EXPECT_TRUE(assembled);

  spvtools::Optimizer optimizer(env);
  optimizer.RegisterPass(CreateCompactIdsPass());
  // The exhaustive inliner will use the result_id
  optimizer.RegisterPass(CreateInlineExhaustivePass());

  // This should not crash!
  optimizer.Run(binary.data(), binary.size(), &binary);

  std::string disassembly;
  tools.Disassemble(binary, &disassembly, SPV_BINARY_TO_TEXT_OPTION_NO_HEADER);

  const std::string expected(R"(OpCapability Shader
OpMemoryModel Logical Simple
OpEntryPoint GLCompute %1 "main"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%1 = OpFunction %2 None %3
%4 = OpLabel
OpReturn
OpFunctionEnd
)");

  EXPECT_THAT(disassembly, ::testing::Eq(expected));
}

TEST(CompactIds, HeaderIsUpdated) {
  const std::string input(R"(OpCapability Shader