update dwarf2 asm unwind info

[H.J. Lu]

On Thu, Aug 7, 2008 at 1:09 PM, Richard Henderson <rth@twiddle.net> wrote:
> H.J. Lu wrote:
>>
>> 3. When -E is used on the PCH file, __GCC_HAVE_DWARF2_CFI_ASM
>> isn't defined since no CFI directive is ever used and we get
>
> I see.  Well, there's really not reason not to pass along the -g
> option to the preprocessing step, which fixes this with the test
> case in your PR.  I've no idea why the same test passes for me
> in the testsuite...
>
>
> r~
>
>
>        * gcc.c (cpp_options): Pass along -g*.
>

I reopened

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37033

since gcc.dg/pch/valid-1b.c still fails.

-- 
H.J.