Add a method to ScalarEvolution for telling it when a loop has been

modified in a way that may effect the trip count calculation. Change
IndVars to use this method when it rewrites pointer or floating-point
induction variables instead of using a doInitialization method to
sneak these changes in before ScalarEvolution has a chance to see
the loop. This eliminates the need for LoopPass to depend on
ScalarEvolution.

llvm-svn: 64810

1 files changed, 0 insertions, 3 deletions

diff --git a/llvm/lib/Analysis/LoopPass.cpp b/llvm/lib/Analysis/LoopPass.cpp
index da9ac2749a0..c45c2ef4c0b 100644
--- a/llvm/lib/Analysis/LoopPass.cpp
+++ b/llvm/lib/Analysis/LoopPass.cpp
@@ -14,7 +14,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/LoopPass.h"
-#include "llvm/Analysis/ScalarEvolution.h"
 using namespace llvm;
 
 //===----------------------------------------------------------------------===//
@@ -173,8 +172,6 @@ void LPPassManager::getAnalysisUsage(AnalysisUsage &Info) const {
   // LPPassManager needs LoopInfo. In the long term LoopInfo class will 
   // become part of LPPassManager.
   Info.addRequired<LoopInfo>();
-  // Used by IndVar doInitialization.
-  Info.addRequired<ScalarEvolution>();
   Info.setPreservesAll();
 }