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[Bug lto/60404] [4.9 Regression] wrong code by LTO on x86_64-linux-gnu
- 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: Wed, 05 Mar 2014 08:47:03 +0000
- Subject: [Bug lto/60404] [4.9 Regression] wrong code by LTO on x86_64-linux-gnu
- Auto-submitted: auto-generated
- References: <bug-60404-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60404
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Mar 5 08:46:31 2014
New Revision: 208340
URL: http://gcc.gnu.org/viewcvs?rev=208340&root=gcc&view=rev
Log:
PR lto/60404
* cfgexpand.c (expand_used_vars): Do not assume all SSA_NAMEs
of PARM/RESULT_DECLs must be coalesced with optimize && in_lto_p.
* tree-ssa-coalesce.c (coalesce_ssa_name): Use MUST_COALESCE_COST - 1
cost for in_lto_p.
* gcc.dg/lto/pr60404_0.c: New test.
* gcc.dg/lto/pr60404_1.c: New file.
* gcc.dg/lto/pr60404_2.c: New file.
Added:
trunk/gcc/testsuite/gcc.dg/lto/pr60404_0.c
trunk/gcc/testsuite/gcc.dg/lto/pr60404_1.c
trunk/gcc/testsuite/gcc.dg/lto/pr60404_2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgexpand.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-coalesce.c