PPC/s390: [builtins] Port TypedArrayConstructByArrayBuffer to CodeStubAssembler.

src/compiler/ppc/instruction-selector-ppc.cc

Index: src/compiler/ppc/instruction-selector-ppc.cc
diff --git a/src/compiler/ppc/instruction-selector-ppc.cc b/src/compiler/ppc/instruction-selector-ppc.cc
index 7127472361bdd0781dc86e6a2bbb48ef62032bf2..07faaa6356bb2a743b45ac5065e206e15a835832 100644
--- a/src/compiler/ppc/instruction-selector-ppc.cc
+++ b/src/compiler/ppc/instruction-selector-ppc.cc
@@ -1240,6 +1240,10 @@ void InstructionSelector::VisitChangeUint32ToUint64(Node* node) {
   // TODO(mbrandy): inspect input to see if nop is appropriate.
   VisitRR(this, kPPC_Uint32ToUint64, node);
 }
+
+void InstructionSelector::VisitChangeFloat64ToUint64(Node* node) {
+  VisitRR(this, kPPC_DoubleToUint64, node);
+}
 #endif