[PowerPC] Revert P9 scheduling model to incomplete

Partially revert a previous change from commit: https://llvm.org/svn/llvm-project/llvm/trunk@314026
The previous change caused regressions on Power 9.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314835 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCScheduleP9.td b/lib/Target/PowerPC/PPCScheduleP9.td
index 6830488deb206e44151773e3a16dabea2fdf3072..f88b5732207f35528feb9c6dc484c2cb4adaadb8 100644 (file)
--- a/lib/Target/PowerPC/PPCScheduleP9.td
+++ b/lib/Target/PowerPC/PPCScheduleP9.td
@@ -22,7 +22,7 @@ def P9Model : SchedMachineModel {
   // Try to make sure we have at least 10 dispatch groups in a loop.
   let LoopMicroOpBufferSize = 60;
 
-  let CompleteModel = 1;
+  let CompleteModel = 0;
 
   let UnsupportedFeatures = [HasQPX];