[AIE] Remove list scheduler override from aie2 and aie2p

Author: Martien de Jong

llvm/lib/Target/AIE/AIE2Subtarget.h

@@ -74,12 +74,6 @@ class AIE2Subtarget : public AIE2GenSubtargetInfo, public AIEBaseSubtarget {
     return AIEBaseSubtarget::getCriticalPathLimitImpl();
   }
 
-  CodeGenOptLevel getOptLevelToEnablePostRAScheduler() const override {
-    // AIEngine V2 hack: we currently rely on the post-RA scheduler to insert
-    // NoOps for correcteness, make sure it runs even when the opt level is -O0.
-    return CodeGenOptLevel::None;
-  }
-
   void overrideSchedPolicy(MachineSchedPolicy &Policy,
                            unsigned NumRegionInstrs) const override {
     AIEBaseSubtarget::overrideSchedPolicyBase(Policy, NumRegionInstrs);

llvm/lib/Target/AIE/aie2p/AIE2PSubtarget.h

@@ -4,7 +4,7 @@
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
-// (c) Copyright 2024 Advanced Micro Devices, Inc. or its affiliates
+// (c) Copyright 2024-2025 Advanced Micro Devices, Inc. or its affiliates
 //
 //===----------------------------------------------------------------------===//
 //
@@ -68,12 +68,6 @@ class AIE2PSubtarget : public AIE2PGenSubtargetInfo, public AIEBaseSubtarget {
     return AIEBaseSubtarget::getCriticalPathLimitImpl();
   }
 
-  CodeGenOptLevel getOptLevelToEnablePostRAScheduler() const override {
-    // AIEngine hack: we currently rely on the post-RA scheduler to insert
-    // NoOps for correcteness, make sure it runs even when the opt level is -O0.
-    return CodeGenOptLevel::None;
-  }
-
   void overrideSchedPolicy(MachineSchedPolicy &Policy,
                            unsigned NumRegionInstrs) const override {
     AIEBaseSubtarget::overrideSchedPolicyBase(Policy, NumRegionInstrs);