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Re: [RFC] Cleanup DW_CFA_GNU_args_size handling
On 08/23/2011 03:42 PM, Gerald Pfeifer wrote:
> On Tue, 23 Aug 2011, Richard Henderson wrote:
>> I've been trying for 2 days to replicate this with various
>> configurations and none have failed.
>
> Thanks for investigating, and sorry that this proves a worthy opponent!
>
>
> On my testers, the system compiler used for bootstrap is GCC 4.2.
> Could that make a difference?
I wouldn't think so.
> Also, comparing stage2-libiberty/fnmatch.o and stage3-libiberty/fnmatch.o
> I noticed that the latter is more than three times the size.
>
> objdump -d does not show any difference. objdump -W, however, shows
> lots of additional DWARF debugging information. I am attaching a diff
> between the two.
>
> Does that help?
Not really. This is an obvious and expected difference, since
stage2 is normally compiled *without* debug information, so that
we can verify that -g0 vs -g2 doesn't alter code generation.
r~