http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54961
--- Comment #7 from Steven Bosscher <steven at gcc dot gnu.org> 2012-10-28 11:44:50 UTC --- The problems of comment #4 and comment #5 are PR39607, a problem that should be solved in reg-stack. The problem of comment #0 is a problem in IRA. There is code to prevent stack registers from living across EDGE_ABNORMAL edges but clearly this code fails in the pr48757.f test case. I suspect there is a bug in the splitting or merging of allocno ranges where the ALLOCNO_NO_STACK_REG_P and ALLOCNO_TOTAL_NO_STACK_REG_P maybe are not properly copied/merged.
