We were emitting the counter for falling out of a do block at the end
of the entire construct's scope, but this can cause us to miss the
increment if the insertion point isn't valid there. Move the increment
to immediately after we emit the body.
rdar://problem/22346924
Swift SVN r31356
This adds the -profile-generate flag, which enables LLVM's
instrumentation based profiling. It implements the instrumentation
for basic control flow, such as if statements, loops, and closures.
Swift SVN r25155
