diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index f931d75..b865790 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -727,6 +727,14 @@
 }
 
 
+void X86Assembler::comiss(XmmRegister a, const Address& b) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x0F);
+  EmitUint8(0x2F);
+  EmitOperand(a, b);
+}
+
+
 void X86Assembler::comisd(XmmRegister a, XmmRegister b) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x66);
@@ -736,6 +744,15 @@
 }
 
 
+void X86Assembler::comisd(XmmRegister a, const Address& b) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0x2F);
+  EmitOperand(a, b);
+}
+
+
 void X86Assembler::ucomiss(XmmRegister a, XmmRegister b) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x0F);