[llvm-commits] CVS: llvm/include/llvm/Analysis/ValueNumbering.h
Chris Lattner
lattner at cs.uiuc.edu
Sat Apr 10 17:33:01 PDT 2004
Changes in directory llvm/include/llvm/Analysis:
ValueNumbering.h updated: 1.4 -> 1.5
---
Log message:
Add an interface to update value numbering
---
Diffs of the changes: (+10 -1)
Index: llvm/include/llvm/Analysis/ValueNumbering.h
diff -u llvm/include/llvm/Analysis/ValueNumbering.h:1.4 llvm/include/llvm/Analysis/ValueNumbering.h:1.5
--- llvm/include/llvm/Analysis/ValueNumbering.h:1.4 Wed Dec 10 23:05:56 2003
+++ llvm/include/llvm/Analysis/ValueNumbering.h Sat Apr 10 17:32:09 2004
@@ -28,6 +28,7 @@
class Value;
struct ValueNumbering {
+ virtual ~ValueNumbering(); // We want to be subclassed
/// getEqualNumberNodes - Return nodes with the same value number as the
/// specified Value. This fills in the argument vector with any equal values.
@@ -35,7 +36,15 @@
virtual void getEqualNumberNodes(Value *V1,
std::vector<Value*> &RetVals) const = 0;
- virtual ~ValueNumbering(); // We want to be subclassed
+ ///===-------------------------------------------------------------------===//
+ /// Interfaces to update value numbering analysis information as the client
+ /// changes the program
+ ///
+
+ /// deleteInstruction - Clients should invoke this method when they delete an
+ /// instruction from the program. This allows the analysis implementations to
+ /// avoid having dangling pointers in their representation.
+ virtual void deleteInstruction(Instruction *I) {}
};
extern void BasicValueNumberingStub();
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