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src/compiler/code-generator-impl.h

Index: src/compiler/code-generator-impl.h
diff --git a/src/compiler/code-generator-impl.h b/src/compiler/code-generator-impl.h
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+// Copyright 2013 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_COMPILER_CODE_GENERATOR_IMPL_H_
+#define V8_COMPILER_CODE_GENERATOR_IMPL_H_
+
+#include "src/compiler/code-generator.h"
+#include "src/compiler/common-operator.h"
+#include "src/compiler/generic-graph.h"
+#include "src/compiler/instruction.h"
+#include "src/compiler/linkage.h"
+#include "src/compiler/machine-operator.h"
+#include "src/compiler/node.h"
+#include "src/compiler/opcodes.h"
+#include "src/compiler/operator.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// Converts InstructionOperands from a given instruction to
+// architecture-specific
+// registers and operands after they have been assigned by the register
+// allocator.
+class InstructionOperandConverter {
+ public:
+  InstructionOperandConverter(CodeGenerator* gen, Instruction* instr)
+      : gen_(gen), instr_(instr) {}
+
+  Register InputRegister(int index) {
+    return ToRegister(instr_->InputAt(index));
+  }
+
+  DoubleRegister InputDoubleRegister(int index) {
+    return ToDoubleRegister(instr_->InputAt(index));
+  }
+
+  double InputDouble(int index) { return ToDouble(instr_->InputAt(index)); }
+
+  int32_t InputInt32(int index) {
+    return ToConstant(instr_->InputAt(index)).ToInt32();
+  }
+
+  int8_t InputInt8(int index) { return static_cast<int8_t>(InputInt32(index)); }
+
+  int16_t InputInt16(int index) {
+    return static_cast<int16_t>(InputInt32(index));
+  }
+
+  uint8_t InputInt5(int index) {
+    return static_cast<uint8_t>(InputInt32(index) & 0x1F);
+  }
+
+  uint8_t InputInt6(int index) {
+    return static_cast<uint8_t>(InputInt32(index) & 0x3F);
+  }
+
+  Handle<HeapObject> InputHeapObject(int index) {
+    return ToHeapObject(instr_->InputAt(index));
+  }
+
+  Label* InputLabel(int index) {
+    return gen_->code()->GetLabel(InputBlock(index));
+  }
+
+  BasicBlock* InputBlock(int index) {
+    NodeId block_id = static_cast<NodeId>(instr_->InputAt(index)->index());
+    // operand should be a block id.
+    ASSERT(block_id >= 0);
+    ASSERT(block_id < gen_->schedule()->BasicBlockCount());
+    return gen_->schedule()->GetBlockById(block_id);
+  }
+
+  Register OutputRegister() { return ToRegister(instr_->Output()); }
+
+  DoubleRegister OutputDoubleRegister() {
+    return ToDoubleRegister(instr_->Output());
+  }
+
+  Register TempRegister(int index) { return ToRegister(instr_->TempAt(index)); }
+
+  Register ToRegister(InstructionOperand* op) {
+    ASSERT(op->IsRegister());
+    return Register::FromAllocationIndex(op->index());
+  }
+
+  DoubleRegister ToDoubleRegister(InstructionOperand* op) {
+    ASSERT(op->IsDoubleRegister());
+    return DoubleRegister::FromAllocationIndex(op->index());
+  }
+
+  Constant ToConstant(InstructionOperand* operand) {
+    if (operand->IsImmediate()) {
+      return gen_->code()->GetImmediate(operand->index());
+    }
+    return gen_->code()->GetConstant(operand->index());
+  }
+
+  double ToDouble(InstructionOperand* operand) {
+    return ToConstant(operand).ToFloat64();
+  }
+
+  Handle<HeapObject> ToHeapObject(InstructionOperand* operand) {
+    return ToConstant(operand).ToHeapObject();
+  }
+
+  Frame* frame() const { return gen_->frame(); }
+  Isolate* isolate() const { return gen_->isolate(); }
+  Linkage* linkage() const { return gen_->linkage(); }
+
+ protected:
+  CodeGenerator* gen_;
+  Instruction* instr_;
+};
+
+
+// TODO(dcarney): generify this on bleeding_edge and replace this call
+// when merged.
+static inline void FinishCode(MacroAssembler* masm) {
+#if V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_ARM
+  masm->CheckConstPool(true, false);
+#endif
+}
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_COMPILER_CODE_GENERATOR_IMPL_H