[Bug target/36827] [4.3/4.4 Regression] newlib:libm/math/k_rem_pio2.c fails in reload

["joseph at codesourcery dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #12 from joseph at codesourcery dot com  2008-07-16 20:25 -------
Subject: Re:  [4.3/4.4 Regression] newlib:libm/math/k_rem_pio2.c
 fails in reload

On Wed, 16 Jul 2008, dj at redhat dot com wrote:

> Last night's builds showed a flaw in the patch.  The "++rii" address
> created by m32c_legitimize_reload_address is *not* legitimate, it's
> used as a marker for addresses that need to be reloaded into an
> address register.  If I fix m32c_print_operand() to print those, it
> ends up printing an address that exceeds the displacement range of the
> FB register:

Try changing the "reloaded != 1" condition in find_reloads_subreg_address 
to "reloaded == 0" (as a replacement for my m32c patch, and probably for 
the SH patch as well).  I hope that should avoid these problems in the 
cases where LEGITIMIZE_RELOAD_ADDRESS does something like this, and I've 
verified the original ARM testcase that motivated my reload change still 
works with that change.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36827