[Bug optimization/11864] [3.3 regression] miscompiles zero extention and test

[ebotcazou at gcc dot gnu dot org]

------- Additional Comments From ebotcazou at gcc dot gnu dot org  2004-02-29 12:45 -------
[It might help to CC me...]

If you are willing to backport

2004-01-27  Eric Botcazou  <ebotcazou@libertysurf.fr>

	PR target/10904
	PR target/13058
	* config/sparc/sparc.h (CANNOT_CHANGE_MODE_CLASS): New.
	Forbid mode changes from SImode for lower FP regs if ARCH64.

to the branch, I think Joern's patches are OK for SPARC.

Beware, however, that other 64-bit ports might be affected by the same problem.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11864