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[Bug rtl-optimization/20972] Register allocator/reload uses auto-inc register in non-addressing operand
- From: "zadeck at naturalbridge dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 17 Jun 2006 04:14:23 -0000
- Subject: [Bug rtl-optimization/20972] Register allocator/reload uses auto-inc register in non-addressing operand
- References: <bug-20972-10413@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #10 from zadeck at naturalbridge dot com 2006-06-17 04:14 -------
(In reply to comment #9)
> The bug is in flow.c and fixed by the new df.c rewrite of dataflow. Ken and I
> tripped over the same problem.
>
While I thought this earlier, I do not believe it now. There is a problem in
flow that it fails to generate reg-dead notes for dead index regs in auto-inc
insns, but this is a separate problem.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20972