Fix more -Wshorten-64-to-32 warnings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50659 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Allocator.cpp b/lib/Support/Allocator.cpp
index 4b6f9ff..ba6a393 100644
--- a/lib/Support/Allocator.cpp
+++ b/lib/Support/Allocator.cpp
@@ -45,7 +45,7 @@
   
   /// Allocate - Allocate and return at least the specified number of bytes.
   ///
-  void *Allocate(unsigned AllocSize, unsigned Alignment, MemRegion **RegPtr) {
+  void *Allocate(size_t AllocSize, size_t Alignment, MemRegion **RegPtr) {
     
     char* Result = (char*) (((uintptr_t) (NextPtr+Alignment-1)) 
                             & ~((uintptr_t) Alignment-1));
@@ -113,7 +113,7 @@
   TheMemory = MRP;
 }
 
-void *BumpPtrAllocator::Allocate(unsigned Size, unsigned Align) {
+void *BumpPtrAllocator::Allocate(size_t Size, size_t Align) {
   MemRegion *MRP = (MemRegion*)TheMemory;
   void *Ptr = MRP->Allocate(Size, Align, &MRP);
   TheMemory = MRP;