2 files changed, 8 insertions, 0 deletions
diff --git a/compiler/utils/x86_64/assembler_x86_64.cc b/compiler/utils/x86_64/assembler_x86_64.cc
index f4c9862f93..f164138168 100644
--- a/compiler/utils/x86_64/assembler_x86_64.cc
+++ b/compiler/utils/x86_64/assembler_x86_64.cc
@@ -1340,6 +1340,13 @@ void X86_64Assembler::negl(CpuRegister reg) {
   EmitOperand(3, Operand(reg));
 }
 
+void X86_64Assembler::negq(CpuRegister reg) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitRex64(reg);
+  EmitUint8(0xF7);
+  EmitOperand(3, Operand(reg));
+}
+
 
 void X86_64Assembler::notl(CpuRegister reg) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
diff --git a/compiler/utils/x86_64/assembler_x86_64.h b/compiler/utils/x86_64/assembler_x86_64.h
index 92b81ec2e7..ec29271b5e 100644
--- a/compiler/utils/x86_64/assembler_x86_64.h
+++ b/compiler/utils/x86_64/assembler_x86_64.h
@@ -450,6 +450,7 @@ class X86_64Assembler FINAL : public Assembler {
   void shrq(CpuRegister reg, const Immediate& imm);
 
   void negl(CpuRegister reg);
+  void negq(CpuRegister reg);
   void notl(CpuRegister reg);
 
   void enter(const Immediate& imm);