[llvm-commits] [llvm] r166122 - in /llvm/trunk: include/llvm/CodeGen/SchedulerRegistry.h lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.h

[Jakob Stoklund Olesen]

On Oct 17, 2012, at 12:39 PM, Evan Cheng <evan.cheng at apple.com> wrote:

> Author: evancheng
> Date: Wed Oct 17 14:39:36 2012
> New Revision: 166122
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=166122&view=rev
> Log:
> Add a really faster pre-RA scheduler (-pre-RA-sched=linearize). It doesn't use
> any scheduling heuristics nor does it build up any scheduling data structure
> that other heuristics use. It essentially linearize by doing a DFA walk but
> it does handle glues correctly.
> 
> IMPORTANT: it probably can't handle all the physical register dependencies so
> it's not suitable for x86. It also doesn't deal with dbg_value nodes right now
> so it's definitely is still WIP.
> 
> rdar://12474515

Any chance this could preserve source order?

/jakob