This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug bootstrap/52397] [4.7 regression] comparison failure with Ada enabled
- From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 28 Feb 2012 16:33:42 +0000
- Subject: [Bug bootstrap/52397] [4.7 regression] comparison failure with Ada enabled
- Auto-submitted: auto-generated
- References: <bug-52397-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52397
--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-02-28 16:33:42 UTC ---
> I wonder if df_reg_chain_unlink/df_install_ref shouldn't just ignore DEBUG_INSN
> refs when updating df->hard_regs_live_count array, do we care at all when
> testing regs_ever_live if something is live in debug insns?
Probably not. Moreover, hard_regs_live_count isn't used outside of df-scan.c
as both df_hard_reg_used_p and df_hard_reg_used_count are only used there (in
fact the latter isn't used at all and could be eliminated altogether).