[wasm] Int64Lowering of I64Shl on ia32.

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

Index: src/compiler/arm/instruction-selector-arm.cc
diff --git a/src/compiler/arm/instruction-selector-arm.cc b/src/compiler/arm/instruction-selector-arm.cc
index 5c5e3043192ede5f1e60baafbf4482c384a375cc..7def9bd7979442e017e309cbec4ca176e9ad5d10 100644
--- a/src/compiler/arm/instruction-selector-arm.cc
+++ b/src/compiler/arm/instruction-selector-arm.cc
@@ -769,6 +769,7 @@ void InstructionSelector::VisitWord32Sar(Node* node) {
   VisitShift(this, node, TryMatchASR);
 }
 
+void InstructionSelector::VisitWord32PairShl(Node* node) { UNIMPLEMENTED(); }
 
 void InstructionSelector::VisitWord32Ror(Node* node) {
   VisitShift(this, node, TryMatchROR);