Finish making AST BumpPtrAllocation runtime configurable (based on -disable-free).

snaroff% time ../../Release-Asserts/bin/clang INPUTS/Cocoa_h.m
0.179u 0.051s 0:00.23 95.6%	0+0k 0+0io 0pf+0w
snaroff% time ../../Release-Asserts/bin/clang INPUTS/Cocoa_h.m -disable-free
0.169u 0.052s 0:00.22 95.4%	0+0k 0+0io 0pf+0w


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63153 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclGroup.cpp b/lib/AST/DeclGroup.cpp
index c7af7cd..e7f84e1 100644
--- a/lib/AST/DeclGroup.cpp
+++ b/lib/AST/DeclGroup.cpp
@@ -24,7 +24,7 @@
   assert (numdecls > 0);
   unsigned size = sizeof(DeclGroup) + sizeof(Decl*) * numdecls;
   unsigned alignment = llvm::AlignOf<DeclGroup>::Alignment;  
-  void* mem = C.getAllocator().Allocate(size, alignment);
+  void* mem = C.Allocate(size, alignment);
   new (mem) DeclGroup(numdecls, decls);
   return static_cast<DeclGroup*>(mem);
 }
@@ -40,7 +40,7 @@
   unsigned NumDecls = (unsigned) D.ReadInt();
   unsigned size = sizeof(DeclGroup) + sizeof(Decl*) * NumDecls;
   unsigned alignment = llvm::AlignOf<DeclGroup>::Alignment;  
-  DeclGroup* DG = (DeclGroup*) C.getAllocator().Allocate(size, alignment);
+  DeclGroup* DG = (DeclGroup*) C.Allocate(size, alignment);
   new (DG) DeclGroup();
   DG->NumDecls = NumDecls;
   D.BatchReadOwnedPtrs(NumDecls, &(*DG)[0], C);