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// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#ifndef RUNTIME_VM_COMPILER_COMPILER_PASS_H_
#define RUNTIME_VM_COMPILER_COMPILER_PASS_H_
#if defined(DART_PRECOMPILED_RUNTIME)
#error "AOT runtime should not use compiler sources (including header files)"
#endif // defined(DART_PRECOMPILED_RUNTIME)
#include <initializer_list>
#include "vm/growable_array.h"
#include "vm/token_position.h"
#include "vm/zone.h"
namespace dart {
#define COMPILER_PASS_LIST(V) \
V(AllocateRegisters) \
V(AllocateRegistersForGraphIntrinsic) \
V(AllocationSinking_DetachMaterializations) \
V(AllocationSinking_Sink) \
V(ApplyClassIds) \
V(ApplyICData) \
V(BranchSimplify) \
V(CSE) \
V(Canonicalize) \
V(ComputeSSA) \
V(ConstantPropagation) \
V(DCE) \
V(DelayAllocations) \
V(DSE) \
V(EliminateDeadPhis) \
V(EliminateEnvironments) \
V(EliminateStackOverflowChecks) \
V(FinalizeGraph) \
V(IfConvert) \
V(Inlining) \
V(LICM) \
V(OptimisticallySpecializeSmiPhis) \
V(OptimizeBranches) \
V(OptimizeTypedDataAccesses) \
V(RangeAnalysis) \
V(ReorderBlocks) \
V(RoundTripSerialization) \
V(SelectRepresentations) \
V(SerializeGraph) \
V(SetOuterInliningId) \
V(TryCatchOptimization) \
V(TryOptimizePatterns) \
V(TypePropagation) \
V(UseTableDispatch) \
V(WidenSmiToInt32) \
V(EliminateWriteBarriers)
class AllocationSinking;
class BlockScheduler;
class CallSpecializer;
class FlowGraph;
class Function;
class Precompiler;
class SpeculativeInliningPolicy;
class TimelineStream;
class Thread;
struct CompilerPassState {
CompilerPassState(Thread* thread,
FlowGraph* flow_graph,
SpeculativeInliningPolicy* speculative_policy,
Precompiler* precompiler = NULL);
FlowGraph* flow_graph() const { return flow_graph_; }
void set_flow_graph(FlowGraph* flow_graph);
Thread* const thread;
Precompiler* const precompiler;
int inlining_depth;
AllocationSinking* sinking;
// Maps inline_id_to_function[inline_id] -> function. Top scope
// function has inline_id 0. The map is populated by the inliner.
GrowableArray<const Function*> inline_id_to_function;
// Token position where inlining occured.
GrowableArray<TokenPosition> inline_id_to_token_pos;
// For a given inlining-id(index) specifies the caller's inlining-id.
GrowableArray<intptr_t> caller_inline_id;
CallSpecializer* call_specializer;
SpeculativeInliningPolicy* speculative_policy;
bool reorder_blocks;
intptr_t sticky_flags;
private:
FlowGraph* flow_graph_;
};
class CompilerPass {
public:
enum Id {
#define DEF(name) k##name,
COMPILER_PASS_LIST(DEF)
#undef DEF
};
#define ADD_ONE(name) +1
static constexpr intptr_t kNumPasses = 0 COMPILER_PASS_LIST(ADD_ONE);
#undef ADD_ONE
CompilerPass(Id id, const char* name) : name_(name), flags_(0) {
ASSERT(passes_[id] == NULL);
passes_[id] = this;
// By default print the final flow-graph after the register allocation.
if (id == kAllocateRegisters) {
flags_ = kTraceAfter;
}
}
virtual ~CompilerPass() {}
enum Flag {
kDisabled = 1 << 0,
kTraceBefore = 1 << 1,
kTraceAfter = 1 << 2,
kSticky = 1 << 3,
kTraceBeforeOrAfter = kTraceBefore | kTraceAfter,
};
void Run(CompilerPassState* state) const;
intptr_t flags() const { return flags_; }
const char* name() const { return name_; }
bool IsFlagSet(Flag flag) const { return (flags() & flag) != 0; }
static CompilerPass* Get(Id id) { return passes_[id]; }
static void ParseFilters(const char* filter);
enum PipelineMode { kJIT, kAOT };
static void RunGraphIntrinsicPipeline(CompilerPassState* state);
static void RunInliningPipeline(PipelineMode mode, CompilerPassState* state);
// RunPipeline(WithPasses) may have the side effect of changing the FlowGraph
// stored in the CompilerPassState. However, existing callers may depend on
// the old invariant that the FlowGraph stored in the CompilerPassState was
// always updated, never entirely replaced.
//
// To make sure callers are updated properly, these methods also return
// the final FlowGraph and we add a check that callers use this result.
DART_WARN_UNUSED_RESULT
static FlowGraph* RunPipeline(PipelineMode mode, CompilerPassState* state);
DART_WARN_UNUSED_RESULT
static FlowGraph* RunPipelineWithPasses(
CompilerPassState* state,
std::initializer_list<CompilerPass::Id> passes);
// Pipeline which is used for "force-optimized" functions.
//
// Must not include speculative or inter-procedural optimizations.
DART_WARN_UNUSED_RESULT
static FlowGraph* RunForceOptimizedPipeline(PipelineMode mode,
CompilerPassState* state);
protected:
// This function executes the pass. If it returns true then
// we will run Canonicalize on the graph and execute the pass
// again.
virtual bool DoBody(CompilerPassState* state) const = 0;
private:
static CompilerPass* FindPassByName(const char* name) {
for (intptr_t i = 0; i < kNumPasses; i++) {
if ((passes_[i] != NULL) && (strcmp(passes_[i]->name_, name) == 0)) {
return passes_[i];
}
}
return NULL;
}
void PrintGraph(CompilerPassState* state, Flag mask, intptr_t round) const;
static CompilerPass* passes_[];
const char* name_;
intptr_t flags_;
};
} // namespace dart
#endif // RUNTIME_VM_COMPILER_COMPILER_PASS_H_