https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88596
--- Comment #4 from Arseny Solokha <asolokha at gmx dot com> ---
I still can w/ r268327, on Ivy Bridge and Haswell. It ICEs only w/ this
particular argument to --param selsched-max-lookahead, though. Playing w/
-f{,no-}stack-protector{,-strong,explicit} gave me nothing this time. Anyway, I
have more testcases of this kind to try.
% x86_64-pc-linux-gnu-gcc-9.0.0-alpha20190127 -mtune=haswell -O1
-fschedule-insns -fselective-scheduling --param selsched-max-lookahead=78 -c
a76zvftd.c -v
Using built-in specs.
COLLECT_GCC=x86_64-pc-linux-gnu-gcc-9.0.0-alpha20190127
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/9.0.0-alpha20190127
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20190127
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20190127/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20190127/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/include/g++-v9
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20190127/python
--enable-languages=c,c++ --enable-obsolete --enable-secureplt --disable-werror
--with-system-zlib --disable-nls --enable-checking=yes --disable-esp
--enable-libstdcxx-time --disable-libstdcxx-pch --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--disable-multilib --with-multilib-list=m64 --disable-altivec
--disable-fixed-point --enable-targets=all --enable-libgomp
--disable-libmudflap --disable-libssp --disable-libmpx --disable-systemtap
--disable-vtable-verify --disable-libvtv --disable-libquadmath --enable-lto
--with-isl --disable-isl-version-check --disable-libsanitizer
--enable-default-pie --enable-default-ssp
Thread model: posix
gcc version 9.0.0-alpha20190127 20190127 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-mtune=haswell' '-O1' '-fschedule-insns'
'-fselective-scheduling' '--param' 'selsched-max-lookahead=78' '-c' '-v'
'-march=x86-64'
/usr/libexec/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/cc1 -quiet -v
a76zvftd.c -quiet -dumpbase a76zvftd.c -mtune=haswell -march=x86-64 -auxbase
a76zvftd -O1 -version -fschedule-insns -fselective-scheduling --param
selsched-max-lookahead=78 -o /tmp/ccTRhQ2O.s
GNU C17 (GCC) version 9.0.0-alpha20190127 20190127 (experimental)
(x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.0-alpha20190127 20190127 (experimental),
GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version
isl-0.20-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/include
/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/include-fixed
/usr/include
End of search list.
GNU C17 (GCC) version 9.0.0-alpha20190127 20190127 (experimental)
(x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.0-alpha20190127 20190127 (experimental),
GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version
isl-0.20-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 6125d5c9aba55c0e4ecd3178c2c99564
during RTL pass: reload
a76zvftd.c: In function 'px':
a76zvftd.c:26:1: internal compiler error: Maximum number of LRA assignment
passes is achieved (30)
26 | }
| ^
0xbe9ccd lra_assign(bool&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lra-assigns.c:1695
0xbe46fd lra(_IO_FILE*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lra.c:2521
0xb9bc79 do_reload
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/ira.c:5516
0xb9bc79 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/ira.c:5700
