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// Copyright 2022 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_MAGLEV_MAGLEV_VREG_ALLOCATOR_H_
#define V8_MAGLEV_MAGLEV_VREG_ALLOCATOR_H_
#include "src/maglev/maglev-basic-block.h"
#include "src/maglev/maglev-graph.h"
#include "src/maglev/maglev-ir.h"
namespace v8 {
namespace internal {
namespace maglev {
class ProcessingState;
class MaglevVregAllocationState {
public:
int AllocateVirtualRegister() { return next_virtual_register_++; }
int num_allocated_registers() const { return next_virtual_register_; }
private:
int next_virtual_register_ = 0;
};
class MaglevVregAllocator {
public:
void PreProcessGraph(Graph* graph) {}
void PostProcessGraph(Graph* graph) {
for (BasicBlock* block : *graph) {
if (!block->has_phi()) continue;
for (Phi* phi : *block->phis()) {
phi->AllocateVregInPostProcess(&state_);
}
}
}
void PreProcessBasicBlock(BasicBlock* block) {}
#define DEF_PROCESS_NODE(NAME) \
void Process(NAME* node, const ProcessingState& state) { \
node->AllocateVreg(&state_); \
}
NODE_BASE_LIST(DEF_PROCESS_NODE)
#undef DEF_PROCESS_NODE
private:
MaglevVregAllocationState state_;
};
} // namespace maglev
} // namespace internal
} // namespace v8
#endif // V8_MAGLEV_MAGLEV_VREG_ALLOCATOR_H_
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