3 files changed, 15 insertions, 0 deletions
diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index fa85ada864..44efc65e3f 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -1515,6 +1515,14 @@ void X86Assembler::repne_scasw() {
 }
 
 
+void X86Assembler::repe_cmpsw() {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0xF3);
+  EmitUint8(0xA7);
+}
+
+
 X86Assembler* X86Assembler::lock() {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xF0);
diff --git a/compiler/utils/x86/assembler_x86.h b/compiler/utils/x86/assembler_x86.h
index d1b4e1dc5f..e2abcde624 100644
--- a/compiler/utils/x86/assembler_x86.h
+++ b/compiler/utils/x86/assembler_x86.h
@@ -465,6 +465,7 @@ class X86Assembler FINAL : public Assembler {
   void jmp(Label* label);
 
   void repne_scasw();
+  void repe_cmpsw();
 
   X86Assembler* lock();
   void cmpxchgl(const Address& address, Register reg);
diff --git a/compiler/utils/x86/assembler_x86_test.cc b/compiler/utils/x86/assembler_x86_test.cc
index aacc57bb0c..0e8c4aee0c 100644
--- a/compiler/utils/x86/assembler_x86_test.cc
+++ b/compiler/utils/x86/assembler_x86_test.cc
@@ -196,4 +196,10 @@ TEST_F(AssemblerX86Test, Repnescasw) {
   DriverStr(expected, "Repnescasw");
 }
 
+TEST_F(AssemblerX86Test, Repecmpsw) {
+  GetAssembler()->repe_cmpsw();
+  const char* expected = "repe cmpsw\n";
+  DriverStr(expected, "Repecmpsw");
+}
+
 }  // namespace art