diff --git a/lib/mpi/longlong.h b/lib/mpi/longlong.h
index 3bb6260d8f42..2dceaca27489 100644
--- a/lib/mpi/longlong.h
+++ b/lib/mpi/longlong.h
@@ -639,30 +639,12 @@ do { \
 	**************  MIPS  *****************
 	***************************************/
 #if defined(__mips__) && W_TYPE_SIZE == 32
-#if (__GNUC__ >= 5) || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
 #define umul_ppmm(w1, w0, u, v)			\
 do {						\
 	UDItype __ll = (UDItype)(u) * (v);	\
 	w1 = __ll >> 32;			\
 	w0 = __ll;				\
 } while (0)
-#elif __GNUC__ > 2 || __GNUC_MINOR__ >= 7
-#define umul_ppmm(w1, w0, u, v) \
-	__asm__ ("multu %2,%3" \
-	: "=l" ((USItype)(w0)), \
-	     "=h" ((USItype)(w1)) \
-	: "d" ((USItype)(u)), \
-	     "d" ((USItype)(v)))
-#else
-#define umul_ppmm(w1, w0, u, v) \
-	__asm__ ("multu %2,%3\n" \
-	   "mflo %0\n" \
-	   "mfhi %1" \
-	: "=d" ((USItype)(w0)), \
-	     "=d" ((USItype)(w1)) \
-	: "d" ((USItype)(u)), \
-	     "d" ((USItype)(v)))
-#endif
 #define UMUL_TIME 10
 #define UDIV_TIME 100
 #endif /* __mips__ */
@@ -687,7 +669,7 @@ do {									\
 		 : "d" ((UDItype)(u)),					\
 		   "d" ((UDItype)(v)));					\
 } while (0)
-#elif (__GNUC__ >= 5) || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
+#else
 #define umul_ppmm(w1, w0, u, v) \
 do {									\
 	typedef unsigned int __ll_UTItype __attribute__((mode(TI)));	\
@@ -695,22 +677,6 @@ do {									\
 	w1 = __ll >> 64;						\
 	w0 = __ll;							\
 } while (0)
-#elif __GNUC__ > 2 || __GNUC_MINOR__ >= 7
-#define umul_ppmm(w1, w0, u, v) \
-	__asm__ ("dmultu %2,%3" \
-	: "=l" ((UDItype)(w0)), \
-	     "=h" ((UDItype)(w1)) \
-	: "d" ((UDItype)(u)), \
-	     "d" ((UDItype)(v)))
-#else
-#define umul_ppmm(w1, w0, u, v) \
-	__asm__ ("dmultu %2,%3\n" \
-	   "mflo %0\n" \
-	   "mfhi %1" \
-	: "=d" ((UDItype)(w0)), \
-	     "=d" ((UDItype)(w1)) \
-	: "d" ((UDItype)(u)), \
-	     "d" ((UDItype)(v)))
 #endif
 #define UMUL_TIME 20
 #define UDIV_TIME 140