diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 3a626bc9bb74..a96ec4713765 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,10 @@
+2016-03-22  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	PR libgcc/70363
+	* config/rs6000/extendkftf2-sw.c (__extendkftf2_sw): If libgcc was
+	built with an assembler that does not support ISA 3.0
+	instructions, rename __extendkftf2_sw to __extendkftf2.
+
 2016-03-16  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	PR target/38239
diff --git a/libgcc/config/rs6000/extendkftf2-sw.c b/libgcc/config/rs6000/extendkftf2-sw.c
index 3be88bf6128d..2ce2f7d550ad 100644
--- a/libgcc/config/rs6000/extendkftf2-sw.c
+++ b/libgcc/config/rs6000/extendkftf2-sw.c
@@ -39,6 +39,10 @@
 #include "soft-fp.h"
 #include "quad-float128.h"
 
+#ifndef FLOAT128_HW_INSNS
+#define __extendkftf2_sw __extendkftf2
+#endif
+
 IBM128_TYPE
 __extendkftf2_sw (__float128 value)
 {