[wasm] Int64Lowering of I64Shl on ia32.

src/compiler/ia32/instruction-codes-ia32.h

Index: src/compiler/ia32/instruction-codes-ia32.h
diff --git a/src/compiler/ia32/instruction-codes-ia32.h b/src/compiler/ia32/instruction-codes-ia32.h
index 61fd035403de27dbd7f7f678447f90672e0aa1e1..38add2540f402e3e0a99e311c6babf0ae94bf309 100644
--- a/src/compiler/ia32/instruction-codes-ia32.h
+++ b/src/compiler/ia32/instruction-codes-ia32.h
@@ -29,6 +29,7 @@ namespace compiler {
   V(IA32Shl)                       \
   V(IA32Shr)                       \
   V(IA32Sar)                       \
+  V(IA32PairShl)                   \
   V(IA32Ror)                       \
   V(IA32Lzcnt)                     \
   V(IA32Tzcnt)                     \
@@ -105,7 +106,6 @@ namespace compiler {
   V(IA32Poke)                      \
   V(IA32StackCheck)
 
-
 // Addressing modes represent the "shape" of inputs to an instruction.
 // Many instructions support multiple addressing modes. Addressing modes
 // are encoded into the InstructionCode of the instruction and tell the