[wasm] Int64Lowering of I64Shl on ia32.

src/compiler/raw-machine-assembler.h

Index: src/compiler/raw-machine-assembler.h
diff --git a/src/compiler/raw-machine-assembler.h b/src/compiler/raw-machine-assembler.h
index c1965c24c02834bfd7f370b7f7a1725970b13005..82c323390a7143caa5a1386cc2ee38cbd18f4349 100644
--- a/src/compiler/raw-machine-assembler.h
+++ b/src/compiler/raw-machine-assembler.h
@@ -324,6 +324,9 @@ class RawMachineAssembler {
   Node* Uint64Mod(Node* a, Node* b) {
     return AddNode(machine()->Uint64Mod(), a, b);
   }
+  Node* Word32PairShl(Node* low_word, Node* high_word, Node* shift) {
+    return AddNode(machine()->Word32PairShl(), low_word, high_word, shift);
+  }
 
 #define INTPTR_BINOP(prefix, name)                     \
   Node* IntPtr##name(Node* a, Node* b) {               \