PR target/34526 doesn't show up as a regression but it is in that on powerpc-linux "-O3 -mcpu=970" now includes -ftree-vectorize and with the default, non-AltiVec ABI vector registers can be clobbered by other functions in the same call tree. An example of this is 176.gcc from SPEC CPU2000.
The fix at http://gcc.gnu.org/ml/gcc-patches/2008-02/msg00094.html introduces a regression by exposing an existing bug in varargs passing of generic vectors with "-mno-altivec -mabi=altivec". I'm still trying to get that fixed (delayed last week by father's surgery and daughter's wedding), but even if the fix doesn't make it in time the fix for vectorization is much more important than breakage to functionality that probably isn't used in the real world. RMs, please take a look at this. Janis
