[Bug ipa/80581] [8 Regression] ICE: in estimate_node_size_and_time, at ipa-inline-analysis.c:3425

["helloqirun at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80581

Qirun Zhang <helloqirun at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |helloqirun at gmail dot com

--- Comment #3 from Qirun Zhang <helloqirun at gmail dot com> ---
The following smaller code also crashes the current trunk version of gcc.

It occurs only at -O2 and -O3 in 32-bit mode.

It also starts with r247417. I thought it should be a duplicate. Therefore, I
report it here.


$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/home/absozero/trunk/root-gcc/libexec/gcc/x86_64-pc-linux-gnu/8.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/absozero/trunk/root-gcc
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 8.0.0 20170501 (experimental) [trunk revision 247436] (GCC)


$ gcc-trunk -m32 -O2 abc.c
abc.c:14:1: internal compiler error: in estimate_node_size_and_time, at
ipa-inline-analysis.c:3425
 void fn3() { fn2(b); }
 ^~~~
0x98ef05 estimate_node_size_and_time
        ../../gcc/gcc/ipa-inline-analysis.c:3425
0x991513 do_estimate_edge_time(cgraph_edge*)
        ../../gcc/gcc/ipa-inline-analysis.c:3935
0x991a67 do_estimate_edge_size(cgraph_edge*)
        ../../gcc/gcc/ipa-inline-analysis.c:3989
0x991cbf estimate_edge_size
        ../../gcc/gcc/ipa-inline.h:304
0x991cbf estimate_edge_growth
        ../../gcc/gcc/ipa-inline.h:315
0x991cbf estimate_size_after_inlining(cgraph_node*, cgraph_edge*)
        ../../gcc/gcc/ipa-inline-analysis.c:4064
0x1315832 caller_growth_limits
        ../../gcc/gcc/ipa-inline.c:184
0x1315832 can_inline_edge_p
        ../../gcc/gcc/ipa-inline.c:382
0x131b622 inline_small_functions
        ../../gcc/gcc/ipa-inline.c:1822
0x131b622 ipa_inline
        ../../gcc/gcc/ipa-inline.c:2438
0x131b622 execute
        ../../gcc/gcc/ipa-inline.c:2849
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.


$ cat abc.c
int a, g;
char b, e;
short c, d, f;
long long h;
void fn1() {
  for (;;)
    ;
}
void fn2(char p1) {
  b |= 5 > a < (f ?: e);
  fn1(a % c || (f -= 0) || 0, d < b,
      c < h % (h > d) ^ g ^ d ? 7 / (c /= b) : (h /= a %= a));
}
void fn3() { fn2(b); }