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From: "zhendong.su at inf dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/103513] [12 Regression] ICE in
 evaluate_conditions_for_known_args, at ipa-fnsummary.c:516 with -O2 and above
 since r12-5531-g1b0acc4b800b589a
Date: Thu, 09 Dec 2021 20:55:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103513

Zhendong Su <zhendong.su at inf dot ethz.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zhendong.su at inf dot eth=
z.ch

--- Comment #6 from Zhendong Su <zhendong.su at inf dot ethz.ch> ---
Another test that fails at -Os and above:

[576] % gcctk -O1 -c small.c
[577] %=20
[577] % gcctk -Os -c small.c
during IPA pass: inline
small.c:8:1: internal compiler error: in evaluate_conditions_for_known_args=
, at
ipa-fnsummary.c:516
    8 | }
      | ^
0xbd4256 evaluate_conditions_for_known_args
        ../../gcc-trunk/gcc/ipa-fnsummary.c:516
0xbd952e evaluate_properties_for_edge(cgraph_edge*, bool, unsigned int*,
unsigned int*, ipa_auto_call_arg_values*, bool)
        ../../gcc-trunk/gcc/ipa-fnsummary.c:726
0xbf0323 do_estimate_edge_time(cgraph_edge*, sreal*)
        ../../gcc-trunk/gcc/ipa-inline-analysis.c:197
0xbf1d34 do_estimate_edge_size(cgraph_edge*)
        ../../gcc-trunk/gcc/ipa-inline-analysis.c:319
0x1c0bc14 estimate_edge_size
        ../../gcc-trunk/gcc/ipa-inline.h:79
0x1c0bc14 estimate_edge_growth
        ../../gcc-trunk/gcc/ipa-inline.h:100
0x1c0eb89 want_inline_small_function_p
        ../../gcc-trunk/gcc/ipa-inline.c:912
0x1c1425c inline_small_functions
        ../../gcc-trunk/gcc/ipa-inline.c:2050
0x1c1425c ipa_inline
        ../../gcc-trunk/gcc/ipa-inline.c:2756
0x1c1425c execute
        ../../gcc-trunk/gcc/ipa-inline.c:3155
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
[578] %=20
[578] % cat small.c
int a;
void b(int c) {
  int d =3D 3;
  d ^=3D c < 2;
  if (d < 3 && a)
    while (1)
      b(!a);
}=