diff -ur root-6.12.04.orig/interpreter/llvm/src/lib/Target/PowerPC/PPCISelLowering.cpp root-6.12.04/interpreter/llvm/src/lib/Target/PowerPC/PPCISelLowering.cpp
--- root-6.12.04.orig/interpreter/llvm/src/lib/Target/PowerPC/PPCISelLowering.cpp	2017-12-13 08:27:42.000000000 +0100
+++ root-6.12.04/interpreter/llvm/src/lib/Target/PowerPC/PPCISelLowering.cpp	2018-01-11 12:40:14.956914822 +0100
@@ -7448,9 +7448,11 @@
 /// - The node is a "load-and-splat"
 /// In all other cases, we will choose to keep the BUILD_VECTOR.
 static bool haveEfficientBuildVectorPattern(BuildVectorSDNode *V,
-                                            bool HasDirectMove) {
+                                            bool HasDirectMove,
+                                            bool HasP8Vector) {
   EVT VecVT = V->getValueType(0);
-  bool RightType = VecVT == MVT::v2f64 || VecVT == MVT::v4f32 ||
+  bool RightType = VecVT == MVT::v2f64 ||
+    (HasP8Vector && VecVT == MVT::v4f32) ||
     (HasDirectMove && (VecVT == MVT::v2i64 || VecVT == MVT::v4i32));
   if (!RightType)
     return false;
@@ -7612,7 +7614,8 @@
     // lowered to VSX instructions under certain conditions.
     // Without VSX, there is no pattern more efficient than expanding the node.
     if (Subtarget.hasVSX() &&
-        haveEfficientBuildVectorPattern(BVN, Subtarget.hasDirectMove()))
+        haveEfficientBuildVectorPattern(BVN, Subtarget.hasDirectMove(),
+                                        Subtarget.hasP8Vector()))
       return Op;
     return SDValue();
   }