diff a/src/hotspot/cpu/ppc/ppc.ad b/src/hotspot/cpu/ppc/ppc.ad
--- a/src/hotspot/cpu/ppc/ppc.ad
+++ b/src/hotspot/cpu/ppc/ppc.ad
@@ -2377,10 +2377,18 @@
 
 const int Matcher::min_vector_size(const BasicType bt) {
   return max_vector_size(bt); // Same as max.
 }
 
+const bool Matcher::supports_scalable_vector() {
+  return false;
+}
+
+const int Matcher::scalable_vector_reg_size(const BasicType bt) {
+  return -1;
+}
+
 // PPC implementation uses VSX load/store instructions (if
 // SuperwordUseVSX) which support 4 byte but not arbitrary alignment
 const bool Matcher::misaligned_vectors_ok() {
   return false;
 }