[wasm] Int64Lowering of Int64Add 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 3cd0dae3ce47f516fcef6efa5a502dae9e07e39d..6e844135decf95bd847de1601704a1f2144a2f09 100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -395,6 +395,8 @@ void InstructionSelector::VisitWord32Sar(Node* node) {
   VisitRRO(this, kMipsSar, node);
 }
 
+void InstructionSelector::VisitInt32PairAdd(Node* node) { UNIMPLEMENTED(); }
+
 void InstructionSelector::VisitWord32PairShl(Node* node) { UNIMPLEMENTED(); }
 
 void InstructionSelector::VisitWord32PairShr(Node* node) { UNIMPLEMENTED(); }