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/*
* Copyright (C) 2022 The Android Open Source Project
*
* 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 <gtest/gtest.h>
#include "code_info_table_deduper.h"
#include "arch/instruction_set.h"
#include "base/malloc_arena_pool.h"
#include "base/scoped_arena_allocator.h"
#include "base/scoped_arena_containers.h"
#include "optimizing/stack_map_stream.h"
namespace art {
namespace linker {
TEST(StackMapTest, TestDedupeBitTables) {
constexpr static uint32_t kPcAlign = GetInstructionSetInstructionAlignment(kRuntimeISA);
using Kind = DexRegisterLocation::Kind;
MallocArenaPool pool;
ArenaStack arena_stack(&pool);
ScopedArenaAllocator allocator(&arena_stack);
StackMapStream stream(&allocator, kRuntimeISA);
stream.BeginMethod(/* frame_size_in_bytes= */ 32,
/* core_spill_mask= */ 0,
/* fp_spill_mask= */ 0,
/* num_dex_registers= */ 2,
/* baseline= */ false,
/* debuggable= */ false);
stream.BeginStackMapEntry(0, 64 * kPcAlign);
stream.AddDexRegisterEntry(Kind::kInStack, 0);
stream.AddDexRegisterEntry(Kind::kConstant, -2);
stream.EndStackMapEntry();
stream.EndMethod(64 * kPcAlign);
ScopedArenaVector<uint8_t> memory = stream.Encode();
std::vector<uint8_t> out;
CodeInfoTableDeduper deduper(&out);
size_t deduped1 = deduper.Dedupe(memory.data());
size_t deduped2 = deduper.Dedupe(memory.data());
for (size_t deduped : { deduped1, deduped2 }) {
CodeInfo code_info(out.data() + deduped);
ASSERT_EQ(1u, code_info.GetNumberOfStackMaps());
StackMap stack_map = code_info.GetStackMapAt(0);
ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForDexPc(0)));
ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForNativePcOffset(64 * kPcAlign)));
ASSERT_EQ(0u, stack_map.GetDexPc());
ASSERT_EQ(64u * kPcAlign, stack_map.GetNativePcOffset(kRuntimeISA));
ASSERT_TRUE(stack_map.HasDexRegisterMap());
DexRegisterMap dex_register_map = code_info.GetDexRegisterMapOf(stack_map);
ASSERT_EQ(Kind::kInStack, dex_register_map[0].GetKind());
ASSERT_EQ(Kind::kConstant, dex_register_map[1].GetKind());
ASSERT_EQ(0, dex_register_map[0].GetStackOffsetInBytes());
ASSERT_EQ(-2, dex_register_map[1].GetConstant());
}
ASSERT_GT(memory.size() * 2, out.size());
}
} // namespace linker
} // namespace art
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