The "Intel 64 and IA-32 Architectures Software Developer's Manual" (at least recent versions) clearly says that the comparison is signed.
Signed-off-by: Aurelien Jarno <aurel...@aurel32.net> --- target-i386/ops_sse.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/target-i386/ops_sse.h b/target-i386/ops_sse.h index cad9d75..0136df9 100644 --- a/target-i386/ops_sse.h +++ b/target-i386/ops_sse.h @@ -1933,8 +1933,7 @@ void glue(helper_mpsadbw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s, } /* SSE4.2 op helpers */ -/* it's unclear whether signed or unsigned */ -#define FCMPGTQ(d, s) (d > s ? -1 : 0) +#define FCMPGTQ(d, s) ((int64_t)d > (int64_t)s ? -1 : 0) SSE_HELPER_Q(helper_pcmpgtq, FCMPGTQ) static inline int pcmp_elen(CPUX86State *env, int reg, uint32_t ctrl) -- 1.7.10.4
