[llvm-commits] CVS: llvm/include/llvm/Target/TargetData.h

[Chris Lattner]

Changes in directory llvm/include/llvm/Target:

TargetData.h updated: 1.32 -> 1.33
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Log message:

Add a new InvalidateStructLayoutInfo method and some comments.


---
Diffs of the changes:  (+9 -0)

 TargetData.h |    9 +++++++++
 1 files changed, 9 insertions(+)


Index: llvm/include/llvm/Target/TargetData.h
diff -u llvm/include/llvm/Target/TargetData.h:1.32 llvm/include/llvm/Target/TargetData.h:1.33
--- llvm/include/llvm/Target/TargetData.h:1.32	Sat Apr 23 17:35:26 2005
+++ llvm/include/llvm/Target/TargetData.h	Fri Jan 13 18:06:42 2006
@@ -113,7 +113,16 @@
   uint64_t getIndexedOffset(const Type *Ty,
                             const std::vector<Value*> &Indices) const;
 
+  /// getStructLayout - Return a StructLayout object, indicating the alignment
+  /// of the struct, its size, and the offsets of its fields.  Note that this
+  /// information is lazily cached.
   const StructLayout *getStructLayout(const StructType *Ty) const;
+  
+  /// InvalidateStructLayoutInfo - TargetData speculatively caches StructLayout
+  /// objects.  If a TargetData object is alive when types are being refined and
+  /// removed, this method must be called whenever a StructType is removed to
+  /// avoid a dangling pointer in this cache.
+  void InvalidateStructLayoutInfo(const StructType *Ty) const;
 };
 
 /// StructLayout - used to lazily calculate structure layout information for a