From: Andrew Carlotti <andrew.carlotti@arm.com>
Date: Wed, 9 Nov 2022 15:59:21 +0000 (+0000)
Subject: Expand comment for tree_niter_desc.max
X-Git-Tag: upstream/13.1.0~3034
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f80bfdcc84707583a66526fb1fb428eb66389359;p=platform%2Fupstream%2Fgcc.git

Expand comment for tree_niter_desc.max

This requirement is enforced by a gcc_checking_assert in
record_estimate.

gcc/ChangeLog:

	* tree-ssa-loop.h (tree_niter_desc): Update comment.
---

diff --git a/gcc/tree-ssa-loop.h b/gcc/tree-ssa-loop.h
index 6c70f79..c24215b 100644
--- a/gcc/tree-ssa-loop.h
+++ b/gcc/tree-ssa-loop.h
@@ -52,7 +52,8 @@ public:
 			   may_be_zero == false), more precisely the number
 			   of executions of the latch of the loop.  */
   widest_int max;	/* The upper bound on the number of iterations of
-			   the loop.  */
+			   the loop.  If niter is constant, then these values
+			   must agree.  */
 
   /* The simplified shape of the exit condition.  This information is used by
      loop unrolling.  If CMP is ERROR_MARK, then the loop cannot be unrolled.