3 files changed, 13 insertions, 0 deletions
diff --git a/compiler/utils/x86_64/assembler_x86_64.cc b/compiler/utils/x86_64/assembler_x86_64.cc
index bd155ed788..b8c757c05d 100644
--- a/compiler/utils/x86_64/assembler_x86_64.cc
+++ b/compiler/utils/x86_64/assembler_x86_64.cc
@@ -1597,6 +1597,14 @@ void X86_64Assembler::imull(CpuRegister reg) {
 }
 
 
+void X86_64Assembler::imulq(CpuRegister reg) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitRex64(reg);
+  EmitUint8(0xF7);
+  EmitOperand(5, Operand(reg));
+}
+
+
 void X86_64Assembler::imull(const Address& address) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitOptionalRex32(address);
diff --git a/compiler/utils/x86_64/assembler_x86_64.h b/compiler/utils/x86_64/assembler_x86_64.h
index 495f74f498..e2fd5fbb80 100644
--- a/compiler/utils/x86_64/assembler_x86_64.h
+++ b/compiler/utils/x86_64/assembler_x86_64.h
@@ -465,6 +465,7 @@ class X86_64Assembler FINAL : public Assembler {
   void imull(CpuRegister reg, const Immediate& imm);
   void imull(CpuRegister reg, const Address& address);
 
+  void imulq(CpuRegister src);
   void imulq(CpuRegister dst, CpuRegister src);
   void imulq(CpuRegister reg, const Immediate& imm);
   void imulq(CpuRegister reg, const Address& address);
diff --git a/compiler/utils/x86_64/assembler_x86_64_test.cc b/compiler/utils/x86_64/assembler_x86_64_test.cc
index 00f508b23f..c2052c7732 100644
--- a/compiler/utils/x86_64/assembler_x86_64_test.cc
+++ b/compiler/utils/x86_64/assembler_x86_64_test.cc
@@ -269,6 +269,10 @@ TEST_F(AssemblerX86_64Test, AddlImm) {
   DriverStr(Repeatri(&x86_64::X86_64Assembler::addl, 4U, "add ${imm}, %{reg}"), "addli");
 }
 
+TEST_F(AssemblerX86_64Test, ImulqReg1) {
+  DriverStr(RepeatR(&x86_64::X86_64Assembler::imulq, "imulq %{reg}"), "imulq");
+}
+
 TEST_F(AssemblerX86_64Test, ImulqRegs) {
   DriverStr(RepeatRR(&x86_64::X86_64Assembler::imulq, "imulq %{reg2}, %{reg1}"), "imulq");
 }