[PATCH] D61702: MISched: Fix -misched-regpressure=0 if subreg liveness enabled

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
Herald added subscribers: javed.absar, tpr, wdng, MatzeB.

Test is waiting on fixing several more crashes in the AMDGPU scheduler implementation with this


https://reviews.llvm.org/D61702

Files:
  lib/CodeGen/MachineScheduler.cpp


Index: lib/CodeGen/MachineScheduler.cpp
===================================================================
--- lib/CodeGen/MachineScheduler.cpp
+++ lib/CodeGen/MachineScheduler.cpp
@@ -2723,8 +2723,10 @@
   MF.getSubtarget().overrideSchedPolicy(RegionPolicy, NumRegionInstrs);
 
   // After subtarget overrides, apply command line options.
-  if (!EnableRegPressure)
+  if (!EnableRegPressure) {
     RegionPolicy.ShouldTrackPressure = false;
+    RegionPolicy.ShouldTrackLaneMasks = false;
+  }
 
   // Check -misched-topdown/bottomup can force or unforce scheduling direction.
   // e.g. -misched-bottomup=false allows scheduling in both directions.


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