land David Blaikie's patch to de-constify Type, with a few tweaks.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135375 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Writer/ValueEnumerator.cpp b/lib/Bitcode/Writer/ValueEnumerator.cpp
index b68bf92..db766b1 100644
--- a/lib/Bitcode/Writer/ValueEnumerator.cpp
+++ b/lib/Bitcode/Writer/ValueEnumerator.cpp
@@ -315,7 +315,7 @@
 }
 
 
-void ValueEnumerator::EnumerateType(const Type *Ty) {
+void ValueEnumerator::EnumerateType(Type *Ty) {
   unsigned *TypeID = &TypeMap[Ty];
 
   // We've already seen this type.
@@ -325,7 +325,7 @@
   // If it is a non-anonymous struct, mark the type as being visited so that we
   // don't recursively visit it.  This is safe because we allow forward
   // references of these in the bitcode reader.
-  if (const StructType *STy = dyn_cast<StructType>(Ty))
+  if (StructType *STy = dyn_cast<StructType>(Ty))
     if (!STy->isAnonymous())
       *TypeID = ~0U;