[WebAssembly] Skeleton FastISel support

llvm-svn: 245860
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.h b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.h
index 9af4e45..ea845cd 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.h
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.h
@@ -45,6 +45,9 @@
   /// right decision when generating code for different targets.
   const WebAssemblySubtarget *Subtarget;
 
+  FastISel *createFastISel(FunctionLoweringInfo &FuncInfo,
+                           const TargetLibraryInfo *LibInfo) const override;
+
   MVT getScalarShiftAmountTy(const DataLayout &DL, EVT) const override;
 
   const char *getTargetNodeName(unsigned Opcode) const override;
@@ -66,6 +69,11 @@
                                SmallVectorImpl<SDValue> &InVals) const override;
 };
 
+namespace WebAssembly {
+FastISel *createFastISel(FunctionLoweringInfo &funcInfo,
+                         const TargetLibraryInfo *libInfo);
+} // end namespace WebAssembly
+
 } // end namespace llvm
 
 #endif