[PATCH] Add testcase for PR61033
Mon Feb 22 13:40:00 GMT 2016
On Sat, Feb 20, 2016 at 6:01 PM, Maxim Kuvyrkov
> This patch adds a testcase for PR61033 .
> 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 .
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?
>  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61033
>  http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=211625
> 2014-06-13 Richard Biener <email@example.com
> * 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
More information about the Gcc-patches