About three months ago, 4.7 stopped being able to optimise things like:
int *__restrict x = ...;
The (libav) loop microbenchmarks that I'd written used this construct
a lot, as an easy way of automatically generating a whole function
from a loop kernel.
I spent a while testing 4.7 with the r
Here's the patch for sms-and-memory-dependencies. The idea is to bypass
the sched-deps.c {output,read,anti,true}_dependence tests altogether --
which is easy to do thanks to the note_mem_dep hook -- and instead handle
them in ddg.c. The ddg.c tests then use RTL loop iv analysis to try
to get long
I've posted all my WIP patches to this list over the last few days.
Please treat them kindly. :-) I've also tried to update the relevant
blueprints.
I pinged the 4.5 and 4.6 backports for lp736661 on gcc-patches last week,
then again this week, but there's obviously not likely to be much response
