Revamp the "CSEMap" datastructure used in the SelectionDAG class. This

[oota-llvm.git] / include / llvm / BasicBlock.h

diff --git a/include/llvm/BasicBlock.h b/include/llvm/BasicBlock.h
index 7fcf8847bd52597c35a4861488d3096a94335ba4..0f7b3e077e4f6b65a1824b5d38fd0d84d2909647 100644 (file)
--- a/include/llvm/BasicBlock.h
+++ b/include/llvm/BasicBlock.h
@@ -91,7 +91,14 @@ public:
   ///
   TerminatorInst *getTerminator();
   const TerminatorInst *const getTerminator() const;
-
+  
+  /// Returns a pointer to the first instructon in this block that is not a 
+  /// PHINode instruction. When adding instruction to the beginning of the
+  /// basic block, they should be added before the returned value, not before
+  /// the first instruction, which might be PHI.
+  /// Returns 0 is there's no non-PHI instruction.
+  Instruction* getFirstNonPHI();
+  
   /// removeFromParent - This method unlinks 'this' from the containing
   /// function, but does not delete it.
   ///