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r217891 - in /trunk/gcc: ChangeLog testsuite/Ch...
- From: ams at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Thu, 20 Nov 2014 20:22:54 -0000
- Subject: r217891 - in /trunk/gcc: ChangeLog testsuite/Ch...
Author: ams
Date: Thu Nov 20 20:22:54 2014
New Revision: 217891
URL: https://gcc.gnu.org/viewcvs?rev=217891&root=gcc&view=rev
Log:
Warn on undefined loop exit.
2014-11-20 Andrew Stubbs <ams@codesourcery.com>
gcc/
* tree-ssa-loop-niter.c (maybe_lower_iteration_bound): Warn if a loop
condition would be removed due to undefined behaviour.
gcc/testsuite/
* gcc.dg/undefined-loop-1.c: New file.
* gcc.dg/undefined-loop-2.c: New file.
Added:
trunk/gcc/testsuite/gcc.dg/undefined-loop-1.c
trunk/gcc/testsuite/gcc.dg/undefined-loop-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-loop-niter.c