torque-code-generator.cc

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// Copyright 2020 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.
 
#include "src/torque/torque-code-generator.h"
 
#include "src/torque/global-context.h"
 
namespace v8 {
namespace internal {
namespace torque {
 
bool TorqueCodeGenerator::IsEmptyInstruction(const Instruction& instruction) {
  switch (instruction.kind()) {
    case InstructionKind::kPeekInstruction:
    case InstructionKind::kPokeInstruction:
    case InstructionKind::kDeleteRangeInstruction:
    case InstructionKind::kPushUninitializedInstruction:
    case InstructionKind::kPushBuiltinPointerInstruction:
    case InstructionKind::kUnsafeCastInstruction:
      return true;
    default:
      return false;
  }
}
 
void TorqueCodeGenerator::EmitInstruction(const Instruction& instruction,
                                          Stack<std::string>* stack) {
#ifdef DEBUG
  if (!IsEmptyInstruction(instruction)) {
    EmitSourcePosition(instruction->pos);
  }
#endif
 
  switch (instruction.kind()) {
#define ENUM_ITEM(T)                                  \
  case InstructionKind::k##T:                         \
    if (GlobalContext::annotate_ir()) {               \
      EmitIRAnnotation(instruction.Cast<T>(), stack); \
    }                                                 \
    return EmitInstruction(instruction.Cast<T>(), stack);
    TORQUE_INSTRUCTION_LIST(ENUM_ITEM)
#undef ENUM_ITEM
  }
}
 
void TorqueCodeGenerator::EmitInstruction(const PeekInstruction& instruction,
                                          Stack<std::string>* stack) {
  stack->Push(stack->Peek(instruction.slot));
}
 
void TorqueCodeGenerator::EmitInstruction(const PokeInstruction& instruction,
                                          Stack<std::string>* stack) {
  stack->Poke(instruction.slot, stack->Top());
  stack->Pop();
}
 
void TorqueCodeGenerator::EmitInstruction(
    const DeleteRangeInstruction& instruction, Stack<std::string>* stack) {
  stack->DeleteRange(instruction.range);
}
 
}  // namespace torque
}  // namespace internal
}  // namespace v8