Another data related talk from cppcon:
Related Slides : http://macton.smugmug.com/gallery/8936708_T6zQX#!i=593426709&k=ZX4pZ
00:28:00 Interesting Example about cache reads, and compiler optimization space.
00:41:50 Bools in structs
01:02:00 Last minute decision making is not a good idea
From the QA at the end he mentions that Link Time Optimization and Profile Guided optimization are too slow to use in code.