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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug bootstrap/97857] [11 Regression] profiledbootstrap broken freeing speculative call summary since r11-4987-g602c6cfc79ce4ae61e277107e0a60079c1a93a97 Date: Mon, 16 Nov 2020 21:27:46 +0000 [thread overview] Message-ID: <bug-97857-4-CJWdDd7HEI@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-97857-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97857 --- Comment #8 from Jan Hubicka <hubicka at gcc dot gnu.org> --- In my setup I get ICE segfault with #0 0x00000000011fcf44 in vec<speculative_call_target, va_heap, vl_ptr>::release (this=0x0) at ../../gcc/vec.h:1811 #1 0x00000000011fcf2f in auto_vec<speculative_call_target, 0ul>::~auto_vec (this=<optimized out>, this=<optimized out>) at ../../gcc/vec.h:1542 #2 speculative_call_summary::~speculative_call_summary (this=<optimized out>, this=<optimized out>) at ../../gcc/ipa-profile.c:178 #3 object_allocator<speculative_call_summary>::remove (object=0x0, this=0x2c980f8) at ../../gcc/alloc-pool.h:522 #4 call_summary_base<speculative_call_summary>::release (this=0x2c980c0, item=0x0) at ../../gcc/symbol-summary.h:625 #5 0x0000000000d03fbf in call_summary<speculative_call_summary*>::~call_summary (this=<optimized out>, this=<optimized out>) at ../../gcc/hash-map.h:270 #6 0x00000000011e1070 in ipa_profile_call_summaries::~ipa_profile_call_summaries (this=<optimized out>, this=<optimized out>) at ../../gcc/ipa-profile.c:192 #7 ipa_profile_call_summaries::~ipa_profile_call_summaries (this=<optimized out>, this=<optimized out>) at ../../gcc/ipa-profile.c:192 #8 0x00000000011e0d00 in ipa_profile () at ../../gcc/ipa-profile.c:1031 #9 (anonymous namespace)::pass_ipa_profile::execute (this=<optimized out>) at ../../gcc/ipa-profile.c:1070 #10 0x0000000000d01344 in execute_one_pass (pass=0x1cc8fe0) at ../../gcc/passes.c:2564 #11 0x00000000011ded75 in execute_ipa_pass_list (pass=0x1cc8fe0) at ../../gcc/passes.c:2993 #12 0x0000000000cffe1f in ipa_passes () at ../../gcc/cgraphunit.c:2217 #13 symbol_table::compile (this=0x7ffff7066100) at ../../gcc/cgraphunit.c:2294 #14 0x00000000011cb792 in symbol_table::finalize_compilation_unit (this=0x7ffff7066100) at ../../gcc/cgraphunit.c:2542 #15 compile_file () at ../../gcc/toplev.c:485 #16 0x000000000119744d in do_compile () at ../../gcc/toplev.c:2321 #17 toplev::main (argv=<optimized out>, argc=6, this=<synthetic pointer>) at ../../gcc/toplev.c:2460 #18 main (argc=<optimized out>, argv=0x7fffffffeb08) at ../../gcc/main.c:39 What is wrong is already #4 call_summary_base<speculative_call_summary>::release (this=0x2c980c0, item=0x0) at ../../gcc/symbol-summary.h:625 625 m_allocator.remove (item); here item should be non-NULL. This is called from: template <typename T> call_summary<T *>::~call_summary () { this->unregister_hooks (); /* Release all summaries. */ typedef typename hash_map <map_hash, T *>::iterator map_iterator; for (map_iterator it = m_map.begin (); it != m_map.end (); ++it) this->release ((*it).second); } and here Dump of assembler code for function call_summary<speculative_call_summary*>::~call_summary(): 0x0000000000d03f9e <+94>: movaps %xmm0,(%rsp) 0x0000000000d03fa2 <+98>: callq 0xd16140 <hash_table<hash_map<int_hash<int, 0, -1>, thunk_info*, simple_hashmap_traits<default_hash_traits<int_hash<int, 0, -1> >, thunk_info*> >::hash_entry, false, xcallocator>::iterator::slide()> 0x0000000000d03fa7 <+103>: movdqa (%rsp),%xmm2 0x0000000000d03fac <+108>: movaps %xmm2,0x10(%rsp) 0x0000000000d03fb1 <+113>: jmp 0xd03fcf <call_summary<speculative_call_summary*>::~call_summary()+143> 0x0000000000d03fb3 <+115>: mov 0x8(%rdx),%rsi 0x0000000000d03fb7 <+119>: mov %rbx,%rdi 0x0000000000d03fba <+122>: callq 0x11fcf10 <call_summary_base<speculative_call_summary>::release(speculative_call_summary*)> => 0x0000000000d03fbf <+127>: lea 0x10(%rsp),%rdi 0x0000000000d03fc4 <+132>: addq $0x10,0x10(%rsp) 0x0000000000d03fca <+138>: callq 0xd16140 <hash_table<hash_map<int_hash<int, 0, -1>, thunk_info*, simple_hashmap_traits<default_hash_traits<int_hash<int, 0, -1> >, thunk_info*> >::hash_entry, false, xcallocator>::iterator::slide()> 0x0000000000d03fcf <+143>: mov 0x10(%rsp),%rdx 0x0000000000d03fd4 <+148>: test %rdx,%rdx so clearly ICF happens on iterator::slide() and something goes wrong here. We merge quite a lot of slies.
next prev parent reply other threads:[~2020-11-16 21:27 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-16 18:22 [Bug bootstrap/97857] New: profiledbootstrap broken freeing speculative call summary hubicka at gcc dot gnu.org 2020-11-16 19:38 ` [Bug bootstrap/97857] [11 Regression] profiledbootstrap broken freeing speculative call summary since r11-4987-g602c6cfc79ce4ae61e277107e0a60079c1a93a97 marxin at gcc dot gnu.org 2020-11-16 19:48 ` Jan Hubicka 2020-11-16 19:48 ` hubicka at ucw dot cz 2020-11-16 19:50 ` marxin at gcc dot gnu.org 2020-11-16 19:54 ` Jan Hubicka 2020-11-16 19:54 ` hubicka at ucw dot cz 2020-11-16 19:58 ` marxin at gcc dot gnu.org 2020-11-16 20:03 ` marxin at gcc dot gnu.org 2020-11-16 20:09 ` Jan Hubicka 2020-11-16 20:09 ` hubicka at ucw dot cz 2020-11-16 21:27 ` hubicka at gcc dot gnu.org [this message] 2020-11-16 21:43 ` Jan Hubicka 2020-11-16 21:43 ` hubicka at ucw dot cz 2020-11-16 22:55 ` hubicka at ucw dot cz 2020-11-16 23:30 ` Jan Hubicka 2020-11-16 23:30 ` hubicka at ucw dot cz 2020-11-17 7:09 ` marxin at gcc dot gnu.org 2020-11-17 14:38 ` cvs-commit at gcc dot gnu.org 2020-11-17 14:43 ` hubicka at gcc dot gnu.org
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