This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/50078] [4.6/4.7 Regression] combine wrong code: volatile accesses optimized out
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 28 Nov 2011 21:03:16 +0000
- Subject: [Bug tree-optimization/50078] [4.6/4.7 Regression] combine wrong code: volatile accesses optimized out
- Auto-submitted: auto-generated
- References: <bug-50078-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50078
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-28 21:03:16 UTC ---
Author: jakub
Date: Mon Nov 28 21:03:11 2011
New Revision: 181786
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181786
Log:
PR tree-optimization/50078
* tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Copy over
TREE_THIS_VOLATILE also from the old to new lhs resp. rhs.
* gcc.dg/pr50078.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr50078.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-forwprop.c