[PATCH] D36663: [X86][Haswell] Updating HSW instruction scheduling information

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sun Aug 20 10:15:34 PDT 2017


craig.topper added inline comments.


================
Comment at: lib/Target/X86/X86SchedHaswell.td:2722
+def HWWriteResGroup52 : SchedWriteRes<[HWPort1,HWPort23]> {
+  let Latency = 3;
+  let NumMicroOps = 2;
----------------
gadi.haber wrote:
> craig.topper wrote:
> > Should this account for load latency?
> yes, according to the SNB architects.
If it shoudl include load latency shouldn't it have a latency of more than 3? ADDPDrr is in a group with latency 3. So shoudln't ADDPrm be more than 3?


Repository:
  rL LLVM

https://reviews.llvm.org/D36663





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