diff --git a/compiler/utils/mips64/assembler_mips64.cc b/compiler/utils/mips64/assembler_mips64.cc
index 8a5ae75..7d6a7f8 100644
--- a/compiler/utils/mips64/assembler_mips64.cc
+++ b/compiler/utils/mips64/assembler_mips64.cc
@@ -1661,6 +1661,7 @@
   }
 }
 
+// TODO: don't use rtmp, use daui, dahi, dati.
 void Mips64Assembler::Daddiu64(GpuRegister rt, GpuRegister rs, int64_t value, GpuRegister rtmp) {
   if (IsInt<16>(value)) {
     Daddiu(rt, rs, value);