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Re: middle-end/6180: Infinite loop in cc1 during dbr pass
- From: "John David Anglin" <dave at hiauly1 dot hia dot nrc dot ca>
- To: dave at hiauly1 dot hia dot nrc dot ca (John David Anglin)
- Cc: gcc-bugs at gcc dot gnu dot org, gcc at gcc dot gnu dot org, rth at redhat dot com
- Date: Fri, 5 Apr 2002 14:54:08 -0500 (EST)
- Subject: Re: middle-end/6180: Infinite loop in cc1 during dbr pass
> in an indeterminate position. reposition_prologue_and_epilogue_notes
> moves the epilogue begin note before the sequence. However, in
> fixing the insn chain, it apparently doesn't check for a sequence
> and the chain is left in a corrupt state. In particular, it doesn't
> touch the numbering inside the sequence.
reposition_prologue_and_epilogue_notes uses reorder_insns. The comments
for reorder_insns_nobb indicate that it doesn't know about sequences
and it looks like the same is true for reorder_insns. Thus, it can't
be used at this point.
Do we actually need to call reposition_prologue_and_epilogue_notes
at this point?
Dave
--
J. David Anglin dave.anglin@nrc.ca
National Research Council of Canada (613) 990-0752 (FAX: 952-6605)