+ - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then make clean && make -j2 ARCH=x86-32-old build && ../tests/signature.sh $benchref; fi
+ - if [[ "$TRAVIS_OS_NAME" == "linux" && "$COMP" == "gcc" ]]; then make clean && make -j2 ARCH=x86-64-modern profile-build && ../tests/signature.sh $benchref; fi
+
+ # compile only for some more advanced architectures (might not run in travis)
+ - make clean && make -j2 ARCH=x86-64-avx2 build
+ - make clean && make -j2 ARCH=x86-64-bmi2 build
+ # needs gcc 10 to compile
+ - if [[ "$COMPILER" != "g++-8" ]]; then make clean && make -j2 ARCH=x86-64-avx512 build; fi