https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111619
Bug ID: 111619
Summary: [14 regression] 'make profiledbootstrap' makes 10+
minutes on insn-recog.cc (x86_64-linux)
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: slyfox at gcc dot gnu.org
Target Milestone: ---
The reproducer on gcc from r14-4300-g1fab05a885a308:
$ ~/dev/git/gcc/configure --disable-multilib --enable-languages=c,c++
$ make profiledbootstrap
insn-recog.o takes ~13 min to build on `AMD Ryzen 9 5950X` CPU:
$ time /tmp/gb/./prev-gcc/cc1plus -quiet -nostdinc++ -I
/tmp/gb/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu -I
/tmp/gb/prev-x86_64-pc-linux-gnu/libstdc++-v3/include -I
/home/slyfox/dev/git/gcc/libstdc++-v3/libsupc++ -I . -I . -I
/home/slyfox/dev/git/gcc/gcc -I /home/slyfox/dev/git/gcc/gcc/. -I
/home/slyfox/dev/git/gcc/gcc/../include -I
/home/slyfox/dev/git/gcc/gcc/../libcpp/include -I
/home/slyfox/dev/git/gcc/gcc/../libcody -I
/home/slyfox/dev/git/gcc/gcc/../libdecnumber -I
/home/slyfox/dev/git/gcc/gcc/../libdecnumber/bid -I ../libdecnumber -I
/home/slyfox/dev/git/gcc/gcc/../libbacktrace -iprefix
/tmp/gb/prev-gcc/../lib/gcc/x86_64-pc-linux-gnu/14.0.0/ -isystem
/tmp/gb/./prev-gcc/include -isystem /tmp/gb/./prev-gcc/include-fixed -MMD
insn-recog.d -MF ./.deps/insn-recog.TPo -MP -MT insn-recog.o -D_GNU_SOURCE -D
IN_GCC -D HAVE_CONFIG_H insn-recog.cc -quiet -dumpbase insn-recog.cc
-dumpbase-ext .cc -mtune=generic -march=x86-64 -g -gtoggle -O2 -Wextra -Wall
-Wno-narrowing -Wwrite-strings -Wcast-qual -Wsuggest-attribute=format
-Wconditionally-supported -Woverloaded-virtual=2 -Wpedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -fno-checking
-fprofile-generate -fno-exceptions -fno-rtti -fasynchronous-unwind-tables
-fno-common -fno-PIE -o /run/user/1000/ccQK54tL.s
real 13m39,864s
user 13m38,263s
sys 0m0,823s
`insn-recog.cc` is 8.3MB.
$ ./prev-gcc/xgcc -Bprev-gcc -v
Reading specs from prev-gcc/specs
COLLECT_GCC=./prev-gcc/xgcc
COLLECT_LTO_WRAPPER=prev-gcc/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /home/slyfox/dev/git/gcc/configure --disable-multilib
--enable-languages=c,c++
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20230926 (experimental) (GCC)
