[PATCH] D52541: [X86][Sched] Update scheduling information for VZEROALL on Haswell.

[Clement Courbet via Phabricator via llvm-commits]

courbet created this revision.
courbet added reviewers: craig.topper, RKSimon.

While looking at PR35606, I found out that the scheduling info is incorrect.

One can check that it's really a https://reviews.llvm.org/P5+https://reviews.llvm.org/P6 and not a 2*https://reviews.llvm.org/P56 with:
echo -e 'vzeroall\nvandps %xmm1, %xmm2, %xmm3' | ./bin/llvm-exegesis -mode=uops -snippets-file=-
(vandps executes on https://reviews.llvm.org/P5 only)


Repository:
  rL LLVM

https://reviews.llvm.org/D52541

Files:
  lib/Target/X86/X86SchedHaswell.td


Index: lib/Target/X86/X86SchedHaswell.td
===================================================================
--- lib/Target/X86/X86SchedHaswell.td
+++ lib/Target/X86/X86SchedHaswell.td
@@ -1616,10 +1616,10 @@
 }
 def: InstRW<[HWWriteResGroup144], (instrs INSB, INSL, INSW)>;
 
-def HWWriteResGroup145 : SchedWriteRes<[HWPort5]> {
-  let Latency = 16;
-  let NumMicroOps = 16;
-  let ResourceCycles = [16];
+def HWWriteResGroup145 : SchedWriteRes<[HWPort5, HWPort6]> {
+  let Latency = 8;
+  let NumMicroOps = 20;
+  let ResourceCycles = [1,1];
 }
 def: InstRW<[HWWriteResGroup145], (instrs VZEROALL)>;
 


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D52541.167105.patch
Type: text/x-patch
Size: 604 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20180926/65f76abd/attachment.bin>