Hello, I have set up a semi-automatic lapack tester on powerpc64-unknown-linux-gnu (gcc110 on the gcc compile farm). It downloads the current trunk, compiles it, then uses that compiler to compile the reference BLAS and Lapack and run the LAPACK test suite, cycling through the Lapack build with different compiler options.
An example of the results is at http://gcc.gnu.org/ml/gcc-testresults/2012-01/msg01757.html It is inexpensive to add another set of options to the scripts. If there is interest, I could easily do so. I have found one problem, PR 51751, which could also be an upstream bug. Thomas