[PATCH] D61930: [PowerPC] Add a specific heuristic to schedule the addi before the load

[Qing Shan Zhang via Phabricator via llvm-commits]

steven.zhang created this revision.
steven.zhang added reviewers: nemanjai, jsji, stefanp, kbarton, hfinkel.
Herald added subscribers: javed.absar, hiraditya, MatzeB.
Herald added a project: LLVM.

When we are scheduling the load and addi, if all other heuristic didn't take effect, we will try to schedule the addi before the load, to hide the latency, and avoid the true dependency added by RA.


https://reviews.llvm.org/D61930

Files:
  llvm/lib/Target/PowerPC/PPCMachineScheduler.cpp
  llvm/lib/Target/PowerPC/PPCMachineScheduler.h
  llvm/test/CodeGen/PowerPC/schedule-addi-load.mir

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D61930.199549.patch
Type: text/x-patch
Size: 6697 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20190515/69dd530b/attachment.bin>