[wasm] Int64Lowering of Int64Mul on ia32 and arm.

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 95a8f317bff057d522fb4225bafae9a37453cd7e..273dab01531749ad11a2cd0ee7ae969d11c53dc5 100644
--- a/src/compiler/ppc/instruction-selector-ppc.cc
+++ b/src/compiler/ppc/instruction-selector-ppc.cc
@@ -810,6 +810,8 @@ void InstructionSelector::VisitInt32PairSub(Node* node) {
   VisitPairBinop(this, kPPC_SubPair, node);
 }
 
+void InstructionSelector::VisitInt32PairMul(Node* node) { UNIMPLEMENTED(); }
+
 void VisitPairShift(InstructionSelector* selector, InstructionCode opcode,
                     Node* node) {
   PPCOperandGenerator g(selector);