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/*
* Copyright (C) 2014 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 "optimization.h"
#ifdef ART_ENABLE_CODEGEN_arm
#include "instruction_simplifier_arm.h"
#endif
#ifdef ART_ENABLE_CODEGEN_arm64
#include "instruction_simplifier_arm64.h"
#endif
#ifdef ART_ENABLE_CODEGEN_x86
#include "pc_relative_fixups_x86.h"
#include "instruction_simplifier_x86.h"
#endif
#if defined(ART_ENABLE_CODEGEN_x86) || defined(ART_ENABLE_CODEGEN_x86_64)
#include "x86_memory_gen.h"
#endif
#ifdef ART_ENABLE_CODEGEN_x86_64
#include "instruction_simplifier_x86_64.h"
#endif
#include "bounds_check_elimination.h"
#include "cha_guard_optimization.h"
#include "code_sinking.h"
#include "constant_folding.h"
#include "constructor_fence_redundancy_elimination.h"
#include "dead_code_elimination.h"
#include "dex/code_item_accessors-inl.h"
#include "driver/compiler_options.h"
#include "driver/dex_compilation_unit.h"
#include "gvn.h"
#include "induction_var_analysis.h"
#include "inliner.h"
#include "instruction_simplifier.h"
#include "intrinsics.h"
#include "licm.h"
#include "load_store_elimination.h"
#include "loop_optimization.h"
#include "scheduler.h"
#include "select_generator.h"
#include "sharpening.h"
#include "side_effects_analysis.h"
// Decide between default or alternative pass name.
namespace art {
const char* OptimizationPassName(OptimizationPass pass) {
switch (pass) {
case OptimizationPass::kSideEffectsAnalysis:
return SideEffectsAnalysis::kSideEffectsAnalysisPassName;
case OptimizationPass::kInductionVarAnalysis:
return HInductionVarAnalysis::kInductionPassName;
case OptimizationPass::kGlobalValueNumbering:
return GVNOptimization::kGlobalValueNumberingPassName;
case OptimizationPass::kInvariantCodeMotion:
return LICM::kLoopInvariantCodeMotionPassName;
case OptimizationPass::kLoopOptimization:
return HLoopOptimization::kLoopOptimizationPassName;
case OptimizationPass::kBoundsCheckElimination:
return BoundsCheckElimination::kBoundsCheckEliminationPassName;
case OptimizationPass::kLoadStoreElimination:
return LoadStoreElimination::kLoadStoreEliminationPassName;
case OptimizationPass::kConstantFolding:
return HConstantFolding::kConstantFoldingPassName;
case OptimizationPass::kDeadCodeElimination:
return HDeadCodeElimination::kDeadCodeEliminationPassName;
case OptimizationPass::kInliner:
return HInliner::kInlinerPassName;
case OptimizationPass::kSelectGenerator:
return HSelectGenerator::kSelectGeneratorPassName;
case OptimizationPass::kAggressiveInstructionSimplifier:
case OptimizationPass::kInstructionSimplifier:
return InstructionSimplifier::kInstructionSimplifierPassName;
case OptimizationPass::kCHAGuardOptimization:
return CHAGuardOptimization::kCHAGuardOptimizationPassName;
case OptimizationPass::kCodeSinking:
return CodeSinking::kCodeSinkingPassName;
case OptimizationPass::kConstructorFenceRedundancyElimination:
return ConstructorFenceRedundancyElimination::kCFREPassName;
case OptimizationPass::kScheduling:
return HInstructionScheduling::kInstructionSchedulingPassName;
#ifdef ART_ENABLE_CODEGEN_arm
case OptimizationPass::kInstructionSimplifierArm:
return arm::InstructionSimplifierArm::kInstructionSimplifierArmPassName;
#endif
#ifdef ART_ENABLE_CODEGEN_arm64
case OptimizationPass::kInstructionSimplifierArm64:
return arm64::InstructionSimplifierArm64::kInstructionSimplifierArm64PassName;
#endif
#ifdef ART_ENABLE_CODEGEN_x86
case OptimizationPass::kPcRelativeFixupsX86:
return x86::PcRelativeFixups::kPcRelativeFixupsX86PassName;
case OptimizationPass::kInstructionSimplifierX86:
return x86::InstructionSimplifierX86::kInstructionSimplifierX86PassName;
#endif
#ifdef ART_ENABLE_CODEGEN_x86_64
case OptimizationPass::kInstructionSimplifierX86_64:
return x86_64::InstructionSimplifierX86_64::kInstructionSimplifierX86_64PassName;
#endif
#if defined(ART_ENABLE_CODEGEN_x86) || defined(ART_ENABLE_CODEGEN_x86_64)
case OptimizationPass::kX86MemoryOperandGeneration:
return x86::X86MemoryOperandGeneration::kX86MemoryOperandGenerationPassName;
#endif
case OptimizationPass::kNone:
LOG(FATAL) << "kNone does not represent an actual pass";
UNREACHABLE();
}
}
#define X(x) if (pass_name == OptimizationPassName((x))) return (x)
OptimizationPass OptimizationPassByName(const std::string& pass_name) {
X(OptimizationPass::kBoundsCheckElimination);
X(OptimizationPass::kCHAGuardOptimization);
X(OptimizationPass::kCodeSinking);
X(OptimizationPass::kConstantFolding);
X(OptimizationPass::kConstructorFenceRedundancyElimination);
X(OptimizationPass::kDeadCodeElimination);
X(OptimizationPass::kGlobalValueNumbering);
X(OptimizationPass::kInductionVarAnalysis);
X(OptimizationPass::kInliner);
X(OptimizationPass::kInstructionSimplifier);
X(OptimizationPass::kInvariantCodeMotion);
X(OptimizationPass::kLoadStoreElimination);
X(OptimizationPass::kLoopOptimization);
X(OptimizationPass::kScheduling);
X(OptimizationPass::kSelectGenerator);
X(OptimizationPass::kSideEffectsAnalysis);
#ifdef ART_ENABLE_CODEGEN_arm
X(OptimizationPass::kInstructionSimplifierArm);
#endif
#ifdef ART_ENABLE_CODEGEN_arm64
X(OptimizationPass::kInstructionSimplifierArm64);
#endif
#ifdef ART_ENABLE_CODEGEN_x86
X(OptimizationPass::kPcRelativeFixupsX86);
X(OptimizationPass::kX86MemoryOperandGeneration);
#endif
LOG(FATAL) << "Cannot find optimization " << pass_name;
UNREACHABLE();
}
#undef X
ArenaVector<HOptimization*> ConstructOptimizations(
const OptimizationDef definitions[],
size_t length,
ArenaAllocator* allocator,
HGraph* graph,
OptimizingCompilerStats* stats,
CodeGenerator* codegen,
const DexCompilationUnit& dex_compilation_unit) {
ArenaVector<HOptimization*> optimizations(allocator->Adapter());
// Some optimizations require SideEffectsAnalysis or HInductionVarAnalysis
// instances. This method uses the nearest instance preceeding it in the pass
// name list or fails fatally if no such analysis can be found.
SideEffectsAnalysis* most_recent_side_effects = nullptr;
HInductionVarAnalysis* most_recent_induction = nullptr;
// Loop over the requested optimizations.
for (size_t i = 0; i < length; i++) {
OptimizationPass pass = definitions[i].pass;
const char* alt_name = definitions[i].pass_name;
const char* pass_name = alt_name != nullptr
? alt_name
: OptimizationPassName(pass);
HOptimization* opt = nullptr;
switch (pass) {
//
// Analysis passes (kept in most recent for subsequent passes).
//
case OptimizationPass::kSideEffectsAnalysis:
opt = most_recent_side_effects = new (allocator) SideEffectsAnalysis(graph, pass_name);
break;
case OptimizationPass::kInductionVarAnalysis:
opt = most_recent_induction = new (allocator) HInductionVarAnalysis(graph, pass_name);
break;
//
// Passes that need prior analysis.
//
case OptimizationPass::kGlobalValueNumbering:
CHECK(most_recent_side_effects != nullptr);
opt = new (allocator) GVNOptimization(graph, *most_recent_side_effects, pass_name);
break;
case OptimizationPass::kInvariantCodeMotion:
CHECK(most_recent_side_effects != nullptr);
opt = new (allocator) LICM(graph, *most_recent_side_effects, stats, pass_name);
break;
case OptimizationPass::kLoopOptimization:
CHECK(most_recent_induction != nullptr);
opt = new (allocator) HLoopOptimization(
graph, *codegen, most_recent_induction, stats, pass_name);
break;
case OptimizationPass::kBoundsCheckElimination:
CHECK(most_recent_side_effects != nullptr && most_recent_induction != nullptr);
opt = new (allocator) BoundsCheckElimination(
graph, *most_recent_side_effects, most_recent_induction, pass_name);
break;
case OptimizationPass::kLoadStoreElimination:
CHECK(most_recent_side_effects != nullptr && most_recent_induction != nullptr);
opt = new (allocator) LoadStoreElimination(
graph, *most_recent_side_effects, stats, pass_name);
break;
//
// Regular passes.
//
case OptimizationPass::kConstantFolding:
opt = new (allocator) HConstantFolding(graph, pass_name);
break;
case OptimizationPass::kDeadCodeElimination:
opt = new (allocator) HDeadCodeElimination(graph, stats, pass_name);
break;
case OptimizationPass::kInliner: {
CodeItemDataAccessor accessor(*dex_compilation_unit.GetDexFile(),
dex_compilation_unit.GetCodeItem());
opt = new (allocator) HInliner(graph, // outer_graph
graph, // outermost_graph
codegen,
dex_compilation_unit, // outer_compilation_unit
dex_compilation_unit, // outermost_compilation_unit
stats,
accessor.RegistersSize(),
/* total_number_of_instructions= */ 0,
/* parent= */ nullptr,
/* depth= */ 0,
pass_name);
break;
}
case OptimizationPass::kSelectGenerator:
opt = new (allocator) HSelectGenerator(graph, stats, pass_name);
break;
case OptimizationPass::kInstructionSimplifier:
opt = new (allocator) InstructionSimplifier(graph, codegen, stats, pass_name);
break;
case OptimizationPass::kAggressiveInstructionSimplifier:
opt = new (allocator) InstructionSimplifier(graph,
codegen,
stats,
pass_name,
/* use_all_optimizations_ = */ true);
break;
case OptimizationPass::kCHAGuardOptimization:
opt = new (allocator) CHAGuardOptimization(graph, pass_name);
break;
case OptimizationPass::kCodeSinking:
opt = new (allocator) CodeSinking(graph, stats, pass_name);
break;
case OptimizationPass::kConstructorFenceRedundancyElimination:
opt = new (allocator) ConstructorFenceRedundancyElimination(graph, stats, pass_name);
break;
case OptimizationPass::kScheduling:
opt = new (allocator) HInstructionScheduling(
graph, codegen->GetCompilerOptions().GetInstructionSet(), codegen, pass_name);
break;
//
// Arch-specific passes.
//
#ifdef ART_ENABLE_CODEGEN_arm
case OptimizationPass::kInstructionSimplifierArm:
DCHECK(alt_name == nullptr) << "arch-specific pass does not support alternative name";
opt = new (allocator) arm::InstructionSimplifierArm(graph, stats);
break;
#endif
#ifdef ART_ENABLE_CODEGEN_arm64
case OptimizationPass::kInstructionSimplifierArm64:
DCHECK(alt_name == nullptr) << "arch-specific pass does not support alternative name";
opt = new (allocator) arm64::InstructionSimplifierArm64(graph, stats);
break;
#endif
#ifdef ART_ENABLE_CODEGEN_x86
case OptimizationPass::kPcRelativeFixupsX86:
DCHECK(alt_name == nullptr) << "arch-specific pass does not support alternative name";
opt = new (allocator) x86::PcRelativeFixups(graph, codegen, stats);
break;
case OptimizationPass::kX86MemoryOperandGeneration:
DCHECK(alt_name == nullptr) << "arch-specific pass does not support alternative name";
opt = new (allocator) x86::X86MemoryOperandGeneration(graph, codegen, stats);
break;
case OptimizationPass::kInstructionSimplifierX86:
opt = new (allocator) x86::InstructionSimplifierX86(graph, codegen, stats);
break;
#endif
#ifdef ART_ENABLE_CODEGEN_x86_64
case OptimizationPass::kInstructionSimplifierX86_64:
opt = new (allocator) x86_64::InstructionSimplifierX86_64(graph, codegen, stats);
break;
#endif
case OptimizationPass::kNone:
LOG(FATAL) << "kNone does not represent an actual pass";
UNREACHABLE();
} // switch
// Add each next optimization to result vector.
CHECK(opt != nullptr);
DCHECK_STREQ(pass_name, opt->GetPassName()); // sanity
optimizations.push_back(opt);
}
return optimizations;
}
} // namespace art