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diff --git a/deps/v8/src/lithium-inl.h b/deps/v8/src/lithium-inl.h
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+// Copyright 2012 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_LITHIUM_INL_H_
+#define V8_LITHIUM_INL_H_
+
+#include "src/lithium.h"
+
+#if V8_TARGET_ARCH_IA32
+#include "src/ia32/lithium-ia32.h" // NOLINT
+#elif V8_TARGET_ARCH_X64
+#include "src/x64/lithium-x64.h" // NOLINT
+#elif V8_TARGET_ARCH_ARM64
+#include "src/arm64/lithium-arm64.h" // NOLINT
+#elif V8_TARGET_ARCH_ARM
+#include "src/arm/lithium-arm.h" // NOLINT
+#elif V8_TARGET_ARCH_MIPS
+#include "src/mips/lithium-mips.h" // NOLINT
+#elif V8_TARGET_ARCH_MIPS64
+#include "src/mips64/lithium-mips64.h" // NOLINT
+#elif V8_TARGET_ARCH_X87
+#include "src/x87/lithium-x87.h" // NOLINT
+#else
+#error "Unknown architecture."
+#endif
+
+namespace v8 {
+namespace internal {
+
+TempIterator::TempIterator(LInstruction* instr)
+ : instr_(instr), limit_(instr->TempCount()), current_(0) {
+ SkipUninteresting();
+}
+
+
+bool TempIterator::Done() { return current_ >= limit_; }
+
+
+LOperand* TempIterator::Current() {
+ DCHECK(!Done());
+ return instr_->TempAt(current_);
+}
+
+
+void TempIterator::SkipUninteresting() {
+ while (current_ < limit_ && instr_->TempAt(current_) == NULL) ++current_;
+}
+
+
+void TempIterator::Advance() {
+ ++current_;
+ SkipUninteresting();
+}
+
+
+InputIterator::InputIterator(LInstruction* instr)
+ : instr_(instr), limit_(instr->InputCount()), current_(0) {
+ SkipUninteresting();
+}
+
+
+bool InputIterator::Done() { return current_ >= limit_; }
+
+
+LOperand* InputIterator::Current() {
+ DCHECK(!Done());
+ DCHECK(instr_->InputAt(current_) != NULL);
+ return instr_->InputAt(current_);
+}
+
+
+void InputIterator::Advance() {
+ ++current_;
+ SkipUninteresting();
+}
+
+
+void InputIterator::SkipUninteresting() {
+ while (current_ < limit_) {
+ LOperand* current = instr_->InputAt(current_);
+ if (current != NULL && !current->IsConstantOperand()) break;
+ ++current_;
+ }
+}
+
+
+UseIterator::UseIterator(LInstruction* instr)
+ : input_iterator_(instr), env_iterator_(instr->environment()) {}
+
+
+bool UseIterator::Done() {
+ return input_iterator_.Done() && env_iterator_.Done();
+}
+
+
+LOperand* UseIterator::Current() {
+ DCHECK(!Done());
+ LOperand* result = input_iterator_.Done() ? env_iterator_.Current()
+ : input_iterator_.Current();
+ DCHECK(result != NULL);
+ return result;
+}
+
+
+void UseIterator::Advance() {
+ input_iterator_.Done() ? env_iterator_.Advance() : input_iterator_.Advance();
+}
+}
+} // namespace v8::internal
+
+#endif // V8_LITHIUM_INL_H_