[llvm] r305078 - [ARM] Custom machine-scheduler. NFCI.

[Javed Absar via llvm-commits]

Author: javed.absar
Date: Fri Jun  9 09:07:21 2017
New Revision: 305078

URL: http://llvm.org/viewvc/llvm-project?rev=305078&view=rev
Log:
[ARM] Custom machine-scheduler. NFCI.

This patch creates a customised machine-scheduler for ARM targets,
so that subsequently DAG mutations etc can be added.
Reviewed by: hahn, rengolin, rovka. 
Differential Revision: https://reviews.llvm.org/D34039


Modified:
    llvm/trunk/lib/Target/ARM/ARMTargetMachine.cpp

Modified: llvm/trunk/lib/Target/ARM/ARMTargetMachine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMTargetMachine.cpp?rev=305078&r1=305077&r2=305078&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMTargetMachine.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMTargetMachine.cpp Fri Jun  9 09:07:21 2017
@@ -37,6 +37,7 @@
 #include "llvm/CodeGen/GlobalISel/RegBankSelect.h"
 #include "llvm/CodeGen/GlobalISel/RegisterBankInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineScheduler.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/TargetPassConfig.h"
 #include "llvm/IR/Attributes.h"
@@ -389,6 +390,20 @@ public:
     return getTM<ARMBaseTargetMachine>();
   }
 
+  ScheduleDAGInstrs *
+  createMachineScheduler(MachineSchedContext *C) const override {
+    ScheduleDAGMILive *DAG = createGenericSchedLive(C);
+    // add DAG Mutations here.
+    return DAG;
+  }
+
+  ScheduleDAGInstrs *
+  createPostMachineScheduler(MachineSchedContext *C) const override {
+    ScheduleDAGMI *DAG = createGenericSchedPostRA(C);
+    // add DAG Mutations here.
+    return DAG;
+  }
+
   void addIRPasses() override;
   bool addPreISel() override;
   bool addInstSelector() override;