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// Copyright (c) 2016 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "gmock/gmock.h"
#include <initializer_list>
#include "module_utils.h"
#include "opt/make_unique.h"
#include "pass_fixture.h"
namespace {
using namespace spvtools;
using spvtest::GetIdBound;
using ::testing::Eq;
// A null pass whose construtors accept arguments
class NullPassWithArgs : public opt::NullPass {
public:
NullPassWithArgs(uint32_t) {}
NullPassWithArgs(std::string) {}
NullPassWithArgs(const std::vector<int>&) {}
NullPassWithArgs(const std::vector<int>&, uint32_t) {}
const char* name() const override { return "null-with-args"; }
};
TEST(PassManager, Interface) {
opt::PassManager manager;
EXPECT_EQ(0u, manager.NumPasses());
manager.AddPass<opt::StripDebugInfoPass>();
EXPECT_EQ(1u, manager.NumPasses());
EXPECT_STREQ("strip-debug", manager.GetPass(0)->name());
manager.AddPass(MakeUnique<opt::NullPass>());
EXPECT_EQ(2u, manager.NumPasses());
EXPECT_STREQ("strip-debug", manager.GetPass(0)->name());
EXPECT_STREQ("null", manager.GetPass(1)->name());
manager.AddPass<opt::StripDebugInfoPass>();
EXPECT_EQ(3u, manager.NumPasses());
EXPECT_STREQ("strip-debug", manager.GetPass(0)->name());
EXPECT_STREQ("null", manager.GetPass(1)->name());
EXPECT_STREQ("strip-debug", manager.GetPass(2)->name());
manager.AddPass<NullPassWithArgs>(1u);
manager.AddPass<NullPassWithArgs>("null pass args");
manager.AddPass<NullPassWithArgs>(std::initializer_list<int>{1, 2});
manager.AddPass<NullPassWithArgs>(std::initializer_list<int>{1, 2}, 3);
EXPECT_EQ(7u, manager.NumPasses());
EXPECT_STREQ("strip-debug", manager.GetPass(0)->name());
EXPECT_STREQ("null", manager.GetPass(1)->name());
EXPECT_STREQ("strip-debug", manager.GetPass(2)->name());
EXPECT_STREQ("null-with-args", manager.GetPass(3)->name());
EXPECT_STREQ("null-with-args", manager.GetPass(4)->name());
EXPECT_STREQ("null-with-args", manager.GetPass(5)->name());
EXPECT_STREQ("null-with-args", manager.GetPass(6)->name());
}
// A pass that appends an OpNop instruction to the debug section.
class AppendOpNopPass : public opt::Pass {
public:
const char* name() const override { return "AppendOpNop"; }
Status Process(ir::Module* module) override {
module->AddDebugInst(MakeUnique<ir::Instruction>());
return Status::SuccessWithChange;
}
};
// A pass that appends specified number of OpNop instructions to the debug
// section.
class AppendMultipleOpNopPass : public opt::Pass {
public:
explicit AppendMultipleOpNopPass(uint32_t num_nop) : num_nop_(num_nop) {}
const char* name() const override { return "AppendOpNop"; }
Status Process(ir::Module* module) override {
for (uint32_t i = 0; i < num_nop_; i++) {
module->AddDebugInst(MakeUnique<ir::Instruction>());
}
return Status::SuccessWithChange;
}
private:
uint32_t num_nop_;
};
// A pass that duplicates the last instruction in the debug section.
class DuplicateInstPass : public opt::Pass {
public:
const char* name() const override { return "DuplicateInst"; }
Status Process(ir::Module* module) override {
auto inst = MakeUnique<ir::Instruction>(*(--module->debug_end()));
module->AddDebugInst(std::move(inst));
return Status::SuccessWithChange;
}
};
using PassManagerTest = PassTest<::testing::Test>;
TEST_F(PassManagerTest, Run) {
const std::string text = "OpMemoryModel Logical GLSL450\nOpSource ESSL 310\n";
AddPass<AppendOpNopPass>();
AddPass<AppendOpNopPass>();
RunAndCheck(text.c_str(), (text + "OpNop\nOpNop\n").c_str());
RenewPassManger();
AddPass<AppendOpNopPass>();
AddPass<DuplicateInstPass>();
RunAndCheck(text.c_str(), (text + "OpNop\nOpNop\n").c_str());
RenewPassManger();
AddPass<DuplicateInstPass>();
AddPass<AppendOpNopPass>();
RunAndCheck(text.c_str(), (text + "OpSource ESSL 310\nOpNop\n").c_str());
RenewPassManger();
AddPass<AppendMultipleOpNopPass>(3);
RunAndCheck(text.c_str(), (text + "OpNop\nOpNop\nOpNop\n").c_str());
}
// A pass that appends an OpTypeVoid instruction that uses a given id.
class AppendTypeVoidInstPass : public opt::Pass {
public:
explicit AppendTypeVoidInstPass(uint32_t result_id) : result_id_(result_id) {}
const char* name() const override { return "AppendTypeVoidInstPass"; }
Status Process(ir::Module* module) override {
auto inst = MakeUnique<ir::Instruction>(SpvOpTypeVoid, 0, result_id_,
std::vector<ir::Operand>{});
module->AddType(std::move(inst));
return Status::SuccessWithChange;
}
private:
uint32_t result_id_;
};
TEST(PassManager, RecomputeIdBoundAutomatically) {
ir::Module module;
EXPECT_THAT(GetIdBound(module), Eq(0u));
opt::PassManager manager;
manager.Run(&module);
manager.AddPass<AppendOpNopPass>();
// With no ID changes, the ID bound does not change.
EXPECT_THAT(GetIdBound(module), Eq(0u));
// Now we force an Id of 100 to be used.
manager.AddPass(MakeUnique<AppendTypeVoidInstPass>(100));
EXPECT_THAT(GetIdBound(module), Eq(0u));
manager.Run(&module);
// The Id has been updated automatically, even though the pass
// did not update it.
EXPECT_THAT(GetIdBound(module), Eq(101u));
// Try one more time!
manager.AddPass(MakeUnique<AppendTypeVoidInstPass>(200));
manager.Run(&module);
EXPECT_THAT(GetIdBound(module), Eq(201u));
// Add another pass, but which uses a lower Id.
manager.AddPass(MakeUnique<AppendTypeVoidInstPass>(10));
manager.Run(&module);
// The Id stays high.
EXPECT_THAT(GetIdBound(module), Eq(201u));
}
} // anonymous namespace
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