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Record likely upper bounds for loops

Message ID 20160528122259.GA61699@kam.mff.cuni.cz
State New
Headers show

Commit Message

Jan Hubicka May 28, 2016, 12:23 p.m. UTC 
> Hi,
> 
> On Fri, 27 May 2016, Jan Hubicka wrote:
> > Thanks, updatted and comitted.
> 
> This checkin seems to regress gcc.c-torture/execute/20050826-2.c at -Os:
> 
> gcc/xgcc -Bgcc/ ../gcc/gcc/testsuite/gcc.c-torture/execute/20050826-2.c -Os \
>   -o ./20050826-2.exe  
> 
> ./20050826-2.exe
> Aborted
> 
> (the previous revision is fine)
Sorry,
I amanged to accidentally commit the following change:


I will revert it after re-testing.
Honza
diff mbox

Patch

Index: tree-ssa-loop-niter.c
===================================================================
--- tree-ssa-loop-niter.c	(revision 236816)
+++ tree-ssa-loop-niter.c	(working copy)
@@ -2289,11 +2289,7 @@  number_of_iterations_exit (struct loop *
 
   /* If NITER has simplified into a constant, update MAX.  */
   if (TREE_CODE (niter->niter) == INTEGER_CST)
-    {
-      niter->max = wi::to_widest (niter->niter);
-      record_niter_bound (loop, niter->max, loop_only_exit_p (loop, exit),
-			  true);
-    }
+    niter->max = wi::to_widest (niter->niter);
 
   if (integer_onep (niter->assumptions))
     return true;