mips: Fix non mips compiler warning.
git-svn-id: svn://svn.valgrind.org/vex/trunk@2870 8f6e269a-dfd6-0310-a8e1-e2731360e62c
diff --git a/priv/guest_mips_toIR.c b/priv/guest_mips_toIR.c
index d8bdfeb..0e9f160 100644
--- a/priv/guest_mips_toIR.c
+++ b/priv/guest_mips_toIR.c
@@ -2344,7 +2344,7 @@
DIP("lasd r%u,(r%u)\n", regRd, regRs);
IRTemp new = newTemp(Ity_I64);
assign (addr, getIReg(regRs));
- assign(new, mkU64(0xffffffffffffffff));
+ assign(new, mkU64(0xffffffffffffffffULL));
mips_irgen_load_and_add64(addr, new, regRd, True);
break;
}