On 06/29/2015 08:24 AM, Tom de Vries wrote:
Hi,
this patch fixes PR66652.
It uses max_loop_iterations in transform_to_exit_first_loop_alt to
ensure that the new loop bound nit + 1 doesn't overflow.
Bootstrapped and reg-tested on x86_64.
OK for trunk?
Thanks,
- Tom
0001-Use-max_loop_iterations-in-transform_to_exit_first_l.patch
Use max_loop_iterations in transform_to_exit_first_loop_alt
2015-06-29 Tom de Vries<t...@codesourcery.com>
PR tree-optimization/66652
* tree-parloops.c (try_transform_to_exit_first_loop_alt): Use
max_loop_iterations to determine if nit + 1 overflows.
* testsuite/libgomp.c/parloops-exit-first-loop-alt-3.c (f): Rewrite
using restrict pointers.
(main): Add arguments to calls to f.
* testsuite/libgomp.c/parloops-exit-first-loop-alt.c: Same.
* gcc.dg/parloops-exit-first-loop-alt-pr66652.c: New test.
* gcc.dg/parloops-exit-first-loop-alt-3.c (f): Rewrite using restrict
pointers.
* gcc.dg/parloops-exit-first-loop-alt.c: Same.
OK.
Make sure to put the PR marker in the testsuite/ChangeLog entry and drop
the testsuite/ prefix in the testsuite/ChangeLog entry.
jeff
