Revert Lower.cpp back to master
Revert Lower.cpp back to master

ronen/Halide,psuriana/Halide,kgnk/Halide,kgnk/Halide,kgnk/Halide,psuriana/Halide,kgnk/Halide,psuriana/Halide,psuriana/Halide,ronen/Halide,ronen/Halide,kgnk/Halide,psuriana/Halide,ronen/Halide,ronen/Halide,psuriana/Halide,ronen/Halide,kgnk/Halide,psuriana/Halide,ronen/Halide,kgnk/Halide,kgnk/Halide,ronen/Halide