[m32c] disable -fcombine-stack-adjustments for now

[Jeff Law]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 02/10/11 12:41, DJ Delorie wrote:
> CSA sometimes moves insns between a compare and its branch, as CSA
> happens after split2.  This patch disables CSA until m32c's flags
> tracking and compare optimization can be rewritten, but that's too big
> a change for stage4.  Applied.
> 
> 	* config/m32c/m32c.c (m32c_option_override): Disable
> 	-fcombine-stack-adjustments until flag value tracking and compare
> 	optimization can be rewritten.
Rather than doing this in m32.c, why not do it for all cc0 targets in
the generic part of the compiler.  Or twiddle the csa code itself to do
nothing if HAVE_cc0?

If csa is moving insns between the cc0 setter & user, then it's going to
break more than just the m32c.


jeff
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/

iQEcBAEBAgAGBQJNWo8MAAoJEBRtltQi2kC731AH/3crnzslh6sleCnt0sSpJWhM
Q7g55Pcf6YF8vgh2BhQRu+q9CEqu5M+KyMHu2IV2Pyx1nRPHUUOzu05C1fsfWs6r
5Kc5VYWDj74LxlkqxZGGt6KmA5yBSF9XkvoKrYQp57HHZzxa3ZLiZe1OadFSEoDp
L9fVxOIQpl2mqvR3KByTd3miGyNFzVRVs3qF6W+DTwMQt2TSKNt8r8HWaisMhBDa
lGotHerPnkGUKLI2vewYSBGTo776iT2VKsyXGQSte7B2mee1nsam2CxY3eQxiAXS
NrBlNPrMD1jBfHOR1mQ9jozYyLNud6kJ31/FahQv8FDpNLZutP3Pmw2i1J0WMqU=
=zPX1
-----END PGP SIGNATURE-----