[llvm] 91f4655 - snapshot - do not push

[Philip Reames via llvm-commits]

Author: Philip Reames
Date: 2021-09-01T16:59:01-07:00
New Revision: 91f4655d9273ecefab1b7f0ea26d44f5de6fd0af

URL: https://github.com/llvm/llvm-project/commit/91f4655d9273ecefab1b7f0ea26d44f5de6fd0af
DIFF: https://github.com/llvm/llvm-project/commit/91f4655d9273ecefab1b7f0ea26d44f5de6fd0af.diff

LOG: snapshot - do not push

Added: 
    

Modified: 
    llvm/lib/Analysis/ScalarEvolution.cpp

Removed: 
    


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diff  --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
index 9ceae4aeca7a7..144fe0766d061 100644
--- a/llvm/lib/Analysis/ScalarEvolution.cpp
+++ b/llvm/lib/Analysis/ScalarEvolution.cpp
@@ -11632,9 +11632,9 @@ ScalarEvolution::howManyLessThans(const SCEV *LHS, const SCEV *RHS,
     //
     // a) IV is either nuw or nsw depending upon signedness (indicated by the
     //    NoWrap flag).
-    // b) loop is single exit with no side effects.
-    // c) loop has no abnormal exits
-    //
+    // b) the loop is guaranteed to be finite (e.g. is mustprogress and has
+    //    no side effects within the loop)
+    // b) loop has a single static exit (with no abnormal exits)
     //
     // Precondition a) implies that if the stride is negative, this is a single
     // trip loop. The backedge taken count formula reduces to zero in this case.