[Bug middle-end/91433] Performance Regression when upgrading from 8.3.0 to 9.0

[mc_george123 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91433

--- Comment #5 from George Fan <mc_george123 at hotmail dot com> ---
The test case is as follows
Environment,
CPU, Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz * 12 cores with hyperthreading
MEM, Dell Vostro 3670 8G
DISK, nvme 256G
OS, from clear linux 28950 to clear linux 29070
gcc, from 8.3.0-433 to 9.0-454
phoronix, v8.4.1
botan, 1.4.0

CMD,
phoronix-test-suite install botan-1.4.0
(
tar -xf Botan-2.8.0.tgz
cd Botan-2.8.0
python3 ./configure.py
make -j $NUM_CPU_CORES
)
phoronix-test-suite run botan-1.4.0
(choose Blowfish)