------- Comment #56 from bernds at gcc dot gnu dot org 2010-08-05 11:31 ------- Created an attachment (id=21400) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21400&action=view) A patch to aid debugging
This patch should help pinpoint exactly what went wrong. It adds a dbg-cnt to the code in question. If you could experiment with passing -fdbg-cnt=bug:N to the compiler, where N is an integer value, using a binary search you should arrive relatively quickly at a value of N where the generated code is OK for N but fails for N + 1. Then, could you attach good/bad assembly files and debug dumps? Just the .expand, .combine and .ira dumps initially would be helpful if we want to save disk space here. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44970
