Speculatively revert r97010, "Add an argument to PHITranslateValue to specify

the DominatorTree. ...", in hopes of restoring poor old PPC bootstrap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97027 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 7 deletions

diff --git a/include/llvm/Analysis/PHITransAddr.h b/include/llvm/Analysis/PHITransAddr.h
index 033efba..b612316 100644
--- a/include/llvm/Analysis/PHITransAddr.h
+++ b/include/llvm/Analysis/PHITransAddr.h
@@ -66,11 +66,9 @@ public:
   bool IsPotentiallyPHITranslatable() const;
   
   /// PHITranslateValue - PHI translate the current address up the CFG from
-  /// CurBB to Pred, updating our state to reflect any needed changes.  If the
-  /// dominator tree DT is non-null, the translated value must dominate
-  /// PredBB.  This returns true on failure and sets Addr to null.
-  bool PHITranslateValue(BasicBlock *CurBB, BasicBlock *PredBB,
-                         const DominatorTree *DT);
+  /// CurBB to Pred, updating our state the reflect any needed changes.  This
+  /// returns true on failure and sets Addr to null.
+  bool PHITranslateValue(BasicBlock *CurBB, BasicBlock *PredBB);
   
   /// PHITranslateWithInsertion - PHI translate this value into the specified
   /// predecessor block, inserting a computation of the value if it is
@@ -90,8 +88,14 @@ public:
   /// returns false.
   bool Verify() const;
 private:
-  Value *PHITranslateSubExpr(Value *V, BasicBlock *CurBB, BasicBlock *PredBB,
-                             const DominatorTree *DT);
+  Value *PHITranslateSubExpr(Value *V, BasicBlock *CurBB, BasicBlock *PredBB);
+  
+  
+  /// GetAvailablePHITranslatedSubExpr - Return the value computed by
+  /// PHITranslateSubExpr if it dominates PredBB, otherwise return null.
+  Value *GetAvailablePHITranslatedSubExpr(Value *V,
+                                          BasicBlock *CurBB, BasicBlock *PredBB,
+                                          const DominatorTree &DT) const;
   
   /// InsertPHITranslatedSubExpr - Insert a computation of the PHI translated
   /// version of 'V' for the edge PredBB->CurBB into the end of the PredBB