[Bug target/38130] [4.4 regression]__builtin_alloca (vs IRA?) testsuite failures on mingw32

[dannysmith at users dot sourceforge dot net]

------- Comment #5 from dannysmith at users dot sourceforge dot net  2008-11-18 05:55 -------
(In reply to comment #4)
> Created an attachment (id=16713)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16713&action=view) [edit]
> gcc44-pr38130.patch
> 
> I've talked about this with Honza on IRC:
> <honza> I would just use "0" constraint. At least in old times with regmove,
> regmove was able to discover that it should use same pseudo for input and
> output.  If you use pair of "=a" and "a" only reload sees this fact
> <honza> so patch is OK with that change.
> This is an updated patch which uses "0" instead of "a" constraint for operand
> 1.
> So, can anyone please test it?  Thanks.
> 

This patch  bootstraps on mingw32 (c,c++,gfortran) successfully,  libstcd++ now
compiles and the two testcases reported as failing now pass.

A full regtest is in progress and so far looks good.

Thanks


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38130