https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98855
Bug ID: 98855
Summary: [11 Regression] botan XTEA is 100% slower on znver2
since r11-4428-g4a369d199bf2f34e
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
Since the revision the following is now slower:
$ make clean && ./configure.py --cxxflags="-Ofast -march=znver2" && make -j16
&& ./botan speed XTEA
as seen here:
https://lnt.opensuse.org/db_default/v4/CPP/graph?plot.0=245.710.1&plot.1=171.710.1&;
Algorithm is implemented here:
src/lib/block/xtea/xtea.cpp
