------- Comment #26 from bernds_cb1 at t-online dot de 2010-02-18 11:51 ------- Created an attachment (id=19905) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19905&action=view) A patch to help debug the problem
I'll need some help since on my system a compiler targetting powerpc-apple-darwin9 produces rather different output in the dumps than what is attached to this bug. The powerpc-linux failures look unrelated as they appear even at -O0. If the problem really is in regrename, the attached patch should help debug it. If you wish to help, please follow these instructions. You'll need to use a kind of binary search using the -fdbg-cnt=rnreg:N option, where N is an integer. Start with something small, maybe even 1, then double it until the failure appears. Then do a binary search between the last number that produced a working binary, and the one that did not. You should end up with a value of N such that -fdbg-cnt=rnreg:N produces a working executable, and -fdbg-cnt=rnreg:N+1 does not. Please attach the .rnreg dumps and assembly files for both. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42220
