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Re: PowerPC -many

On Wed, Feb 15, 2017 at 11:34:26AM +1030, Alan Modra wrote:
> On Tue, Feb 14, 2017 at 06:38:40PM -0600, Segher Boessenkool wrote:
> > On Wed, Feb 15, 2017 at 10:36:02AM +1030, Alan Modra wrote:
> > > Since we've been talking about obsoleting cpu support, how about
> > > getting rid of -many in ASM_CPU_SPEC for gcc-8?
> > 
> > Sure, but that doesn't need advance warning to the users, does it?
> 
> Probably not.
> 
> > Things worked before and stay working, nothing user-visible?
> 
> Except for bad user asm() that ought to be true.  Oh, and gcc bugs
> like emitting power9 insns when -mcpu=power8.  You'd have some chance
> that the assembler would complain rather than getting sigill at
> run-time.

What does gcc do when using target attribute, where one function is
power7, another power9, then another power8?

	Jakub
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