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[Bug target/54602] [SH] Register pop insn not put in rts delay slot
- From: "olegendo at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 10 Oct 2012 23:24:07 +0000
- Subject: [Bug target/54602] [SH] Register pop insn not put in rts delay slot
- Auto-submitted: auto-generated
- References: <bug-54602-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54602
--- Comment #5 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-10-10 23:24:07 UTC ---
(In reply to comment #4)
>
> I don't know the history about it. I can only imagine that some
> system could assume some banked regs will be not clobbered with
> their exception handler and will be used like as normal registers.
> A new -m option which controls the behavior of which default
> is not to save/restore the banked regs?
Oh well, why not ;)
But first I'd like to think this through. I'll open a new PR for it later.