[llvm-commits] [llvm] r93930 - in /llvm/trunk: include/llvm/Analysis/ScalarEvolution.h lib/Analysis/ScalarEvolution.cpp

[Dan Gohman]

Author: djg
Date: Tue Jan 19 16:21:27 2010
New Revision: 93930

URL: http://llvm.org/viewvc/llvm-project?rev=93930&view=rev
Log:
Give ScalarEvolution access to the DominatorTree. It'll need this
to make more intellegent AddRec folding decisions.

Modified:
    llvm/trunk/include/llvm/Analysis/ScalarEvolution.h
    llvm/trunk/lib/Analysis/ScalarEvolution.cpp

Modified: llvm/trunk/include/llvm/Analysis/ScalarEvolution.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Analysis/ScalarEvolution.h?rev=93930&r1=93929&r2=93930&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Analysis/ScalarEvolution.h (original)
+++ llvm/trunk/include/llvm/Analysis/ScalarEvolution.h Tue Jan 19 16:21:27 2010
@@ -181,6 +181,10 @@
     ///
     TargetData *TD;
 
+    /// DT - The dominator tree.
+    ///
+    DominatorTree *DT;
+
     /// CouldNotCompute - This SCEV is used to represent unknown trip
     /// counts and things.
     SCEVCouldNotCompute CouldNotCompute;

Modified: llvm/trunk/lib/Analysis/ScalarEvolution.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/ScalarEvolution.cpp?rev=93930&r1=93929&r2=93930&view=diff

==============================================================================
--- llvm/trunk/lib/Analysis/ScalarEvolution.cpp (original)
+++ llvm/trunk/lib/Analysis/ScalarEvolution.cpp Tue Jan 19 16:21:27 2010
@@ -5167,6 +5167,7 @@
 bool ScalarEvolution::runOnFunction(Function &F) {
   this->F = &F;
   LI = &getAnalysis<LoopInfo>();
+  DT = &getAnalysis<DominatorTree>();
   TD = getAnalysisIfAvailable<TargetData>();
   return false;
 }
@@ -5183,6 +5184,7 @@
 void ScalarEvolution::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
   AU.addRequiredTransitive<LoopInfo>();
+  AU.addRequiredTransitive<DominatorTree>();
 }
 
 bool ScalarEvolution::hasLoopInvariantBackedgeTakenCount(const Loop *L) {