Hello, > By "this change" I mean just commenting out the check in > doloop_condition_get. After applying the patch that introduced DOLOOP > patterns for SPU (http://gcc.gnu.org/ml/gcc-patches/2007-01/msg01470.html) > we needed this hack in order to be able to use the doloop_condition_get to > return the register decremented by the branch instruction for any unrolled > loop (The unroller changed originally GE loops to EQ ). Where can this check > be required? Note that we did not touched the similar check in > doloop_modify. We tested this on our SPU branch and saw no regressions.
hmmm.... I see now that modulo-sched.c:doloop_register_get uses doloop_condition_get, which is why this may affect something. Anyway, changing doloop_condition_get is wrong. Just teach modulo-sched to use number of iterations analysis from loop-iv.c instead of the doloop_register_get hack, Zdenek
