On Fri, 2006-11-17 at 12:22 -0500, Andrew MacLeod wrote: > I just tried compiling cplusplus_grammer.ii with mainline, checking > disabled, and had to stop it after 30 minutes (use to be <50 seconds on > my x86-linux box). A quick check with GDB seems to show that its > spending in inordinate amount of time in may_alias: > > #0 0x0816d1ac in bitmap_ior_into (a=0x99916d8, b=0x98f60a0) > at /src/gcc/2006-11-16/gcc/gcc/bitmap.c:1167 > #1 0x083c8071 in set_union_with_increment (to=0x99916d8, from=0x98f60a0, > inc=0) at /src/gcc/2006-11-16/gcc/gcc/tree-ssa-structalias.c:715 > #2 0x083cacf4 in solve_graph (graph=0x9a11d10) > at /src/gcc/2006-11-16/gcc/gcc/tree-ssa-structalias.c:1721 > #3 0x083cbb7d in compute_points_to_sets (ai=0x8ccc200) > at /src/gcc/2006-11-16/gcc/gcc/tree-ssa-structalias.c:4846 > #4 0x08133ab9 in compute_may_aliases () > at /src/gcc/2006-11-16/gcc/gcc/tree-ssa-alias.c:665 > > > If anyone has changed this recently, you might want to have a look.
Im seeing the same thing in all.i from 26854... I had to kill the process after 20 minutes. It was in 'solve_graph' there as well. Andrew
