[wasm] Int64Lowering of Int64Mul on ia32 and arm.

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

Index: src/compiler/mips/instruction-selector-mips.cc
diff --git a/src/compiler/mips/instruction-selector-mips.cc b/src/compiler/mips/instruction-selector-mips.cc
index 4c13fcc660b2dc07b0d19658609ae7411da97730..0c180a14fba3ab6d72c9ccc198db87113a94d353 100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -399,6 +399,8 @@ void InstructionSelector::VisitInt32PairAdd(Node* node) { UNIMPLEMENTED(); }
 
 void InstructionSelector::VisitInt32PairSub(Node* node) { UNIMPLEMENTED(); }
 
+void InstructionSelector::VisitInt32PairMul(Node* node) { UNIMPLEMENTED(); }
+
 void InstructionSelector::VisitWord32PairShl(Node* node) { UNIMPLEMENTED(); }
 
 void InstructionSelector::VisitWord32PairShr(Node* node) { UNIMPLEMENTED(); }