RFC: target-hook-ize ASM_FILE_START

[Zack Weinberg]

Kazu Hirata <kazu@cs.umass.edu> writes:

> Hi Zack,
>
>> This is decidedly nontrivial and I'd appreciate port maintainers
>> checking over their chunk of it.  Problems are especially likely in
>> the ARM, PA, and RS/6000 back ends.  There are definitely behavior
>> changes in here; I *think* all of them amount to bugfixes.  Please
>> note I have not tested this at all.  I expect modifications will be
>> necessary, so I'm not going to bother writing a change log for this
>> edition.
>
> With this patch, I found no new regressions on h8300 port.  In fact,
> the following regressions went away. :-)
>
> FAIL: gcc.dg/c90-intconst-1.c (test for excess errors)
> FAIL: gcc.dg/c99-intconst-1.c (test for excess errors)
> XPASS: gcc.dg/setjmp-1.c spurious clobbered warning (test for bogus messages, line 16)
> FAIL: gcc.dg/setjmp-1.c (test for excess errors)

That should not have happened; can you make sure that it was really my
patch that did that?

zw