https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83051
Bug ID: 83051 Summary: ICE on valid code at -O3: in edge_badness, at ipa-inline.c:1024 Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: ipa Assignee: unassigned at gcc dot gnu.org Reporter: su at cs dot ucdavis.edu CC: marxin at gcc dot gnu.org Target Milestone: --- $ gcctk -v Using built-in specs. COLLECT_GCC=gcctk COLLECT_LTO_WRAPPER=/home/su/software/tmp/gcc/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/8.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto --prefix=/home/su/software/tmp/gcc/gcc-trunk --disable-bootstrap Thread model: posix gcc version 8.0.0 20171119 (experimental) [trunk revision 254924] (GCC) $ $ gcctk -O2 small.c $ gcc-7.2.0 -O3 small.c $ $ gcctk -O3 small.c during IPA pass: inline small.c:30:1: internal compiler error: in edge_badness, at ipa-inline.c:1024 } ^ 0x1471968 edge_badness ../../gcc-source-trunk/gcc/ipa-inline.c:1023 0x1471e69 update_edge_key ../../gcc-source-trunk/gcc/ipa-inline.c:1223 0x147236e update_caller_keys ../../gcc-source-trunk/gcc/ipa-inline.c:1345 0x1474709 inline_small_functions ../../gcc-source-trunk/gcc/ipa-inline.c:2051 0x1474709 ipa_inline ../../gcc-source-trunk/gcc/ipa-inline.c:2442 0x1474709 execute ../../gcc-source-trunk/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. $ ---------------------------------------------------------- int a[1], b, c, d, e, f, g, h; void fn1 (int p) { b = b >> 8 ^ a[b ^ (c & 5)] >> 8 ^ a[(b ^ c) & 5]; b = b >> 8 ^ a[(b ^ c) & 5]; } static void fn2 () { int k; while (1) while (e) { while (g) while (h) for (k = 0; k < 6; k++) while (f) fn1 (0); fn1 (0); fn1 (0); fn1 (0); } } int main () { fn2 (); return 0; }