Change TargetFolder's TD member from a reference to a

pointer, now that ConstantFoldConstantExpression can
accept a null TargetData pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72744 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 5 deletions

diff --git a/include/llvm/Support/TargetFolder.h b/include/llvm/Support/TargetFolder.h
index 14f2c9b..172e4fe 100644
--- a/include/llvm/Support/TargetFolder.h
+++ b/include/llvm/Support/TargetFolder.h
@@ -9,8 +9,10 @@
 //
 // This file defines the TargetFolder class, a helper for IRBuilder.
 // It provides IRBuilder with a set of methods for creating constants with
-// target dependent folding.  For general constant creation and folding,
-// use ConstantExpr and the routines in llvm/Analysis/ConstantFolding.h.
+// target dependent folding, in addition to the same target-independent
+// folding that the ConstantFolder class provides.  For general constant
+// creation and folding, use ConstantExpr and the routines in
+// llvm/Analysis/ConstantFolding.h.
 //
 //===----------------------------------------------------------------------===//
 
@@ -26,18 +28,18 @@ class TargetData;
 
 /// TargetFolder - Create constants with target dependent folding.
 class TargetFolder {
-  const TargetData &TD;
+  const TargetData *TD;
 
   /// Fold - Fold the constant using target specific information.
   Constant *Fold(Constant *C) const {
     if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
-      if (Constant *CF = ConstantFoldConstantExpression(CE, &TD))
+      if (Constant *CF = ConstantFoldConstantExpression(CE, TD))
         return CF;
     return C;
   }
 
 public:
-  TargetFolder(const TargetData &TheTD) : TD(TheTD) {}
+  explicit TargetFolder(const TargetData *TheTD) : TD(TheTD) {}
 
   //===--------------------------------------------------------------------===//
   // Binary Operators