diff -r 21d557c85b87 Eigen/src/Core/arch/AltiVec/PacketMath.h
--- a/Eigen/src/Core/arch/AltiVec/PacketMath.h	Thu May 23 15:31:12 2019 +0200
+++ b/Eigen/src/Core/arch/AltiVec/PacketMath.h	Thu May 23 14:26:19 2019 -0300
@@ -452,7 +452,7 @@
 template<> EIGEN_STRONG_INLINE Packet4i pandnot<Packet4i>(const Packet4i& a, const Packet4i& b) { return vec_and(a, vec_nor(b, b)); }
 
 template<> EIGEN_STRONG_INLINE Packet4f pselect(const Packet4f& mask, const Packet4f& a, const Packet4f& b) {
-  return vec_sel(b, a, mask);
+  return vec_sel(b, a, reinterpret_cast<Packet4ui>(mask));
 }
 
 template<> EIGEN_STRONG_INLINE Packet4f pround<Packet4f>(const Packet4f& a) { return vec_round(a); }