detect-optimisation.sh

#!/usr/bin/env bash

REGINA_PATH=/path/to/regina
CCOPTS="-O3 -S -I/usr/include/python2.7 -I${REGINA_PATH}/engine -I${REGINA_PATH}/build/engine -I/usr/include/libxml2 -pthread -std=c++11 -DNDEBUG -fPIC -DREGINA_DLL_EXPORTS=1 -Dregina_engine_EXPORTS"

function testCompile {
  file=$1
  g++ ${CCOPTS} -o optimised.s ${file} || exit
  g++ ${CCOPTS} -fwrapv -o notoptimised.s ${file} || exit
  if ! diff optimised.s notoptimised.s &> /dev/null ; then
    bname=$(basename ${file})
    mv optimised.s ${bname}-optimised.s
    mv notoptimised.s ${bname}-notoptimised.s
    echo "Optimisation detected on ${file}"
  fi
}

for file in $(find ${REGINA_PATH}/engine -name \*cpp) ; do
  testCompile ${file}
done
for file in $(find ${REGINA_PATH}/utils/ -name \*cpp) ; do
  testCompile ${file}
done
for file in $(find ${REGINA_PATH}/python/ -name \*cpp) ; do
  testCompile ${file}
done