https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98234
Bug ID: 98234
Summary: [11 Regression] OOM at -O2 for PR91257 testcase
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
> /usr/bin/time gcc-10 -S pr91257.c -O2
pr91257.c: In function 'gen_opt':
pr91257.c:291:6: warning: implicit declaration of function 'asdf'
[-Wimplicit-function-declaration]
291 | v0 = asdf(41, 28120, 584);
| ^~~~
pr91257.c:294:1: warning: implicit declaration of function 'call_err'
[-Wimplicit-function-declaration]
294 | call_err(reg);
| ^~~~~~~~
28.60user 0.41system 0:29.04elapsed 99%CPU (0avgtext+0avgdata
1377844maxresident)k
49464inputs+0outputs (7major+648860minor)pagefaults 0swaps
> /usr/bin/time ~/install/gcc-11.0/usr/local/bin/gcc -S pr91257.c -O2
pr91257.c: In function 'gen_opt':
pr91257.c:291:6: warning: implicit declaration of function 'asdf'
[-Wimplicit-function-declaration]
291 | v0 = asdf(41, 28120, 584);
| ^~~~
pr91257.c:294:1: warning: implicit declaration of function 'call_err'
[-Wimplicit-function-declaration]
294 | call_err(reg);
| ^~~~~~~~
gcc: fatal error: Killed signal terminated program cc1
compilation terminated.
Command exited with non-zero status 1
23.79user 5.15system 0:30.29elapsed 95%CPU (0avgtext+0avgdata
32175084maxresident)k
388216inputs+0outputs (4037major+8529324minor)pagefaults 0swaps
at ~7GB a backtrace is
#0 0x00007ffff739c2e7 in __memset_avx2_unaligned_erms () from /lib64/libc.so.6
#1 0x0000000001803865 in ssa_block_ranges::ssa_block_ranges (
this=0x1b0593ab0, t=0x7ffff70595e8, allocator=<optimized out>)
at /home/rguenther/src/trunk/gcc/gimple-range-cache.cc:147
#2 0x0000000001803eb9 in block_range_cache::get_block_ranges (this=0x290a238,
name=<optimized out>) at /home/rguenther/src/trunk/gcc/tree.h:3450
#3 0x0000000001804758 in block_range_cache::set_bb_range (r=...,
bb=0x7ffff6f36410, name=0x7fffddb457e0, this=0x290a238)
at /home/rguenther/src/trunk/gcc/gimple-range-cache.cc:1016
#4 ranger_cache::fill_block_cache (this=0x290a0e0, name=0x7fffddb457e0,
bb=0x7ffff6f36410, def_bb=0x7ffff6f363a8)
at /home/rguenther/src/trunk/gcc/gimple-range-cache.cc:1016
...
#16 0x000000000180c017 in execute_early_vrp ()
at /home/rguenther/src/trunk/gcc/gimple-ssa-evrp.c:349
and finishing frames never leaves EVRP before going OOM.
-O2 -fno-tree-vrp finishes with
30.27user 0.42system 0:30.76elapsed 99%CPU (0avgtext+0avgdata
1555304maxresident)k
62736inputs+0outputs (72major+610841minor)pagefaults 0swaps
