Subzero: Add -Wshadow to the build.

src/IceInst.h

Index: src/IceInst.h
diff --git a/src/IceInst.h b/src/IceInst.h
index 7aad05455aa7d7519f671eb99ee7c38334324861..e1abc87a4a7d1903868950f13d9234d85b4d7cd2 100644
--- a/src/IceInst.h
+++ b/src/IceInst.h
@@ -394,8 +394,9 @@ public:
 
 protected:
   InstCall(Cfg *Func, SizeT NumArgs, Variable *Dest, Operand *CallTarget,
-           bool HasTailCall, bool HasSideEff, InstKind Kind)
-      : InstHighLevel(Func, Kind, NumArgs + 1, Dest), HasTailCall(HasTailCall) {
+           bool MyHasTailCall, bool HasSideEff, InstKind Kind)
+      : InstHighLevel(Func, Kind, NumArgs + 1, Dest),
+        HasTailCall(MyHasTailCall) {
     HasSideEffects = HasSideEff;
     addSource(CallTarget);
   }
@@ -565,10 +566,11 @@ public:
 
 private:
   InstIntrinsicCall(Cfg *Func, SizeT NumArgs, Variable *Dest,
-                    Operand *CallTarget, const Intrinsics::IntrinsicInfo &Info)
-      : InstCall(Func, NumArgs, Dest, CallTarget, false, Info.HasSideEffects,
+                    Operand *CallTarget,
+                    const Intrinsics::IntrinsicInfo &MyInfo)
+      : InstCall(Func, NumArgs, Dest, CallTarget, false, MyInfo.HasSideEffects,
                  Inst::IntrinsicCall),
-        Info(Info) {}
+        Info(MyInfo) {}
 
   const Intrinsics::IntrinsicInfo Info;
 };