Introduce isOpaqueTy and use it rather than isa<OpaqueType>.  Also, move some
methods to try to have the type predicates be more logically positioned.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96349 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Linker/LinkModules.cpp b/lib/Linker/LinkModules.cpp
index 7f441b0..8487c83 100644
--- a/lib/Linker/LinkModules.cpp
+++ b/lib/Linker/LinkModules.cpp
@@ -159,7 +159,7 @@
   if (DstTy == SrcTy) return false;       // If already equal, noop
 
   // If we found our opaque type, resolve it now!
-  if (isa<OpaqueType>(DstTy) || isa<OpaqueType>(SrcTy))
+  if (DstTy->isOpaqueTy() || SrcTy->isOpaqueTy())
     return ResolveTypes(DstTy, SrcTy);
 
   // Two types cannot be resolved together if they are of different primitive