Rename ScalarEvolution's getIterationCount to getBackedgeTakenCount,
to more accurately describe what it does. Expand its doxygen comment
to describe what the backedge-taken count is and how it differs
from the actual iteration count of the loop. Adjust names and
comments in associated code accordingly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65382 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LoopDeletion.cpp b/lib/Transforms/Scalar/LoopDeletion.cpp
index b64131c..d7be820 100644
--- a/lib/Transforms/Scalar/LoopDeletion.cpp
+++ b/lib/Transforms/Scalar/LoopDeletion.cpp
@@ -190,7 +190,7 @@
// Don't remove loops for which we can't solve the trip count.
// They could be infinite, in which case we'd be changing program behavior.
ScalarEvolution& SE = getAnalysis<ScalarEvolution>();
- SCEVHandle S = SE.getIterationCount(L);
+ SCEVHandle S = SE.getBackedgeTakenCount(L);
if (isa<SCEVCouldNotCompute>(S))
return false;
@@ -267,7 +267,7 @@
(*LI)->eraseFromParent();
// Tell ScalarEvolution that the loop is deleted.
- SE.forgetLoopIterationCount(L);
+ SE.forgetLoopBackedgeTakenCount(L);
// Finally, the blocks from loopinfo. This has to happen late because
// otherwise our loop iterators won't work.