GCC trunk gets a ICE when building SPEC CPU2000 test 175.vpr with "-O2 -fselective-scheduling -fsel-sched-pipelining -fsched-pressure" as demonstrated by a minimized testcase that I'll attach to this PR.
elm3b149% /home/janis/tools/gcc-trunk-anonsvn/bin/gcc -c -O2 -fselective-scheduling -fsel-sched-pipelining -fsched-pressure bug.c bug.c: In function try_route: bug.c:83:1: internal compiler error: in advance_state_on_fence, at sel-sched.c:5264 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. The ICE begins with this patch: http://gcc.gnu.org/viewcvs?view=rev&rev=152291 r152291 | pthaugen | 2009-09-29 18:58:56 +0000 (Tue, 29 Sep 2009) Option -fsched-pressure is new in GCC 4.5 so this is not a regression from 4.4. -- Summary: ICE in advance_state_on_fence with sel-schd for 175.vpr Product: gcc Version: 4.5.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: rtl-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: janis at gcc dot gnu dot org GCC target triplet: powerpc64-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42389
