The following fails: $ cat fp.c float fma_test1(float a, float b, float c) { float x = a * b + c; return x; } float fma_test2(float a, float b, float c) { float x = a * b + c; return x; } $ gcc fp.c -c -fipa-modref -fipa-icf during IPA pass: modref fp.c:8:1: internal compiler error: Segmentation fault 8 | } | ^ 0xda1cef crash_signal /home/marxin/Programming/gcc/gcc/toplev.c:329 0x7ffff788652f ??? /usr/src/debug/glibc-2.31-6.3.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0 0xb97b0c compute_parm_map /home/marxin/Programming/gcc/gcc/ipa-modref.c:1368 0xb9a0e1 compute_parm_map /home/marxin/Programming/gcc/gcc/ipa-modref.c:1338 0xb9a0e1 modref_propagate_in_scc /home/marxin/Programming/gcc/gcc/ipa-modref.c:1603 0xb9a0e1 execute /home/marxin/Programming/gcc/gcc/ipa-modref.c:1680 0xb9a0e1 execute /home/marxin/Programming/gcc/gcc/ipa-modref.c:1659 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.
The master branch has been updated by Jan Hubicka <hubicka@gcc.gnu.org>: https://gcc.gnu.org/g:73c977cb0a112ac58fae18af44576ade8ab3aa26 commit r11-3592-g73c977cb0a112ac58fae18af44576ade8ab3aa26 Author: Jan Hubicka <jh@suse.cz> Date: Thu Oct 1 15:43:56 2020 +0200 Add gcc.c-torture/compile/pr97243.c testcase. PR ipa/97243 * gcc.c-torture/compile/pr97243.c: New test.
Fixed.