Handle decrementing loops properly. Fixes PR1533.

Always pass the constant as the second parameter to HowManyLessThans.

Remove obsolete "isSigned" parameter.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39893 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 4 deletions

diff --git a/include/llvm/Analysis/ScalarEvolutionExpressions.h b/include/llvm/Analysis/ScalarEvolutionExpressions.h
index 957ddadcb5..af1656ee8e 100644
--- a/include/llvm/Analysis/ScalarEvolutionExpressions.h
+++ b/include/llvm/Analysis/ScalarEvolutionExpressions.h
@@ -475,10 +475,8 @@ namespace llvm {
     /// looking at this is that it returns the first iteration number where the
     /// value is not in the condition, thus computing the exit count.  If the
     /// iteration count can't be computed, an instance of SCEVCouldNotCompute is
-    /// returned. The isSigned parameter indicates whether the ConstantRange
-    /// should be treated as signed or unsigned.
-    SCEVHandle getNumIterationsInRange(ConstantRange Range, 
-                                       bool isSigned) const;
+    /// returned.
+    SCEVHandle getNumIterationsInRange(ConstantRange Range) const;
 
     SCEVHandle replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
                                                  const SCEVHandle &Conc) const;