On Sat, Feb 20, 2016 at 6:01 PM, Maxim Kuvyrkov <maxim.kuvyr...@linaro.org> wrote: > This patch adds a testcase for PR61033 [1]. > > The bug is about compiler going into infinite loop while solving data-flow in > vt_find_locations on arm-* targets. The issue in fixed in GCC 5 and later by > Richard B.'s r211624 [2].
Well, made latent I would guess. > The bug affects GCC 4.8 and 4.9, but is unlikely to be fixed there. > > This patch adds a regression test to make sure we catch the problem should it > re-appear again. > > Tested on arm-linux-gnueabihf and x86_64-linux-gnu. > > OK to apply? Ok. Thanks, Richard. > > [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61033 > > [2] http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=211625 > 2014-06-13 Richard Biener <rguent...@suse.de > > * tree-ssa-pre.c (eliminate_dom_walker::before_dom_children): > Rewrite to propagate the VN result into all uses where > possible and to remove stmts becoming dead because of that. > (eliminate): Generalize stmt removal handling, remove in > reverse dominator order to support proper debug stmt > generation. Update stmts before removing stmts. > * tree-ssa-propagate.c (propagate_tree_value): Remove > bogus assert. > > -- > Maxim Kuvyrkov > www.linaro.org > >
