On 05/22/2015 09:42 AM, Richard Sandiford wrote:
This patch adjusts the fix for PR target/65689 along the lines suggested in https://gcc.gnu.org/ml/gcc-patches/2015-04/msg01559.html. The idea is to reuse the existing gensupport.c routine to work out the codes accepted by constraints.I'd originally done this with an eye to using compute_test_codes for the problem that Andreas found on s390. I don't think it's going to be useful for that after all, but it seems worth having for its on sake. Bootstrapped & regression-tested on x86_64-linux-gnu. OK to install? Thanks, Richard gcc/ * gensupport.h (compute_test_codes): Declare. * gensupport.c (compute_predicate_codes): Rename to... (compute_test_codes): ...this. Generalize error message. (process_define_predicate): Update accordingly. * genpreds.c (compute_maybe_allows): Delete. (add_constraint): Use compute_test_codes to determine whether something can accept a SUBREG, REG or MEM.
OK. jeff
