r221492 - in /trunk/gcc: ChangeLog testsuite/Ch...

[ams@gcc.gnu.org]

Author: ams
Date: Wed Mar 18 14:27:13 2015
New Revision: 221492

URL: https://gcc.gnu.org/viewcvs?rev=221492&root=gcc&view=rev
Log:
Fix PR64491

2015-03-18  Andrew Stubbs  <ams@codesourcery.com>

	PR middle-end/64491
	Revert:
	2014-11-20  Andrew Stubbs  <ams@codesourcery.com>

	* tree-ssa-loop-niter.c (maybe_lower_iteration_bound): Warn if a loop
	condition would be removed due to undefined behaviour.

2015-03-18  Andrew Stubbs  <ams@codesourcery.com>

	PR middle-end/64491
	Revert:
	2014-11-20  Andrew Stubbs  <ams@codesourcery.com>

	* gcc.dg/undefined-loop-1.c: New file.
	* gcc.dg/undefined-loop-2.c: New file.

	2014-12-24  Andrew Stubbs  <ams@codesourcery.com>

	PR testsuite/64032
	* gcc.dg/undefined-loop-2.c: Don't allow GCC to optimize away the
	loop exits too early.

Removed:
    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