[Bug bootstrap/103974] [12 Regression] ICE in ira_flattening building libstdc++ with r12-6415-g01f3e6a40e72

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103974

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This the steps I needed to reproduce this bug;
mkdir objdir-cris
cd objdir-cris
../configure --target=cris-elf
make -j24 all-gcc
cd gcc
wget https://gcc.gnu.org/bugzilla/attachment.cgi?id=52159
mv attach* t.c
./cc1 t.c -O2

(you can do at this point:
make clean
make -j24 cc1
and get a -O0 built cc1 too if needed).