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Re: gcc-2.95.3, but not gcc-2.95.2, requires gas on hppa2.0-hp-hpux10.20
- To: Bernd Schmidt <bernds at redhat dot com>
- Subject: Re: gcc-2.95.3, but not gcc-2.95.2, requires gas on hppa2.0-hp-hpux10.20
- From: Richard Henderson <rth at redhat dot com>
- Date: Wed, 24 Jan 2001 18:09:27 -0800
- Cc: Jeffrey A Law <law at redhat dot com>, Martin Buchholz <martin at xemacs dot org>, John David Anglin <dave at hiauly1 dot hia dot nrc dot ca>, gcc-bugs at gcc dot gnu dot org
- References: <4951.980280411@slagheap.cygnus.com> <Pine.LNX.4.30.0101241319070.1128-100000@host140.cambridge.redhat.com>
On Wed, Jan 24, 2001 at 01:27:51PM +0000, Bernd Schmidt wrote:
> It's a bit odd that the label got deleted, since the load from the
> constant pool has a REG_LABEL note and you'd think flow would count
> that as a use.
Not if it doesn't create an edge to that label.
Labels that are referenced but are not relevant to the CFG are
turned into NOTE_INSN_DELETED_LABEL. Which *does* get emitted,
so if references survive, then they should be fulfilled.
Er, of course, this is mainline not 2.95, if that's what you're
working on. Perhaps I'm not paying attention...
r~