diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index 5347bf0..d6caa3c 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -720,6 +720,14 @@
 }
 
 
+void X86Assembler::ucomiss(XmmRegister a, const Address& b) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x0F);
+  EmitUint8(0x2E);
+  EmitOperand(a, b);
+}
+
+
 void X86Assembler::ucomisd(XmmRegister a, XmmRegister b) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x66);
@@ -729,6 +737,15 @@
 }
 
 
+void X86Assembler::ucomisd(XmmRegister a, const Address& b) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0x2E);
+  EmitOperand(a, b);
+}
+
+
 void X86Assembler::roundsd(XmmRegister dst, XmmRegister src, const Immediate& imm) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x66);
diff --git a/compiler/utils/x86/assembler_x86.h b/compiler/utils/x86/assembler_x86.h
index b50fda9..655af9c 100644
--- a/compiler/utils/x86/assembler_x86.h
+++ b/compiler/utils/x86/assembler_x86.h
@@ -417,7 +417,9 @@
   void comiss(XmmRegister a, XmmRegister b);
   void comisd(XmmRegister a, XmmRegister b);
   void ucomiss(XmmRegister a, XmmRegister b);
+  void ucomiss(XmmRegister a, const Address& b);
   void ucomisd(XmmRegister a, XmmRegister b);
+  void ucomisd(XmmRegister a, const Address& b);
 
   void roundsd(XmmRegister dst, XmmRegister src, const Immediate& imm);
   void roundss(XmmRegister dst, XmmRegister src, const Immediate& imm);
diff --git a/compiler/utils/x86/assembler_x86_test.cc b/compiler/utils/x86/assembler_x86_test.cc
index 16f9db4..a9b991c 100644
--- a/compiler/utils/x86/assembler_x86_test.cc
+++ b/compiler/utils/x86/assembler_x86_test.cc
@@ -306,6 +306,19 @@
   DriverStr(RepeatRI(&x86::X86Assembler::roll, 1U, "roll ${imm}, %{reg}"), "rolli");
 }
 
+TEST_F(AssemblerX86Test, UComissAddr) {
+  GetAssembler()->ucomiss(x86::XmmRegister(x86::XMM0), x86::Address(x86::EAX, 0));
+  const char* expected = "ucomiss 0(%EAX), %xmm0\n";
+  DriverStr(expected, "ucomiss");
+}
+
+TEST_F(AssemblerX86Test, UComisdAddr) {
+  GetAssembler()->ucomisd(x86::XmmRegister(x86::XMM0), x86::Address(x86::EAX, 0));
+  const char* expected = "ucomisd 0(%EAX), %xmm0\n";
+  DriverStr(expected, "ucomisd");
+}
+
+
 /////////////////
 // Near labels //
 /////////////////