This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: Fwd: [PATCH] Scheduling result adjustment to enable macro-fusion



On Tue, 10 Sep 2013, Wei Mi wrote:

> Because deps_analyze_insn only analyzes data deps but no control deps.
> Control deps are included by add_branch_dependences. Without the
> chain_to_prev_insn in the end of add_branch_dependences, jmp will be
> control dependent on every previous insn in the same bb, and the cmp
> and jmp group could still be scheduled apart since they will not be
> put in ready list at the same time.

Would calling add_branch_dependences before sched_analyze solve that, then?

Alexander


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]