1 files changed, 42 insertions, 0 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
index 58057d37b55..444a3a587a4 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -13,6 +13,7 @@
 #include "PPCTargetMachine.h"
 #include "MCTargetDesc/PPCMCTargetDesc.h"
 #include "PPC.h"
+#include "PPCMachineScheduler.h"
 #include "PPCSubtarget.h"
 #include "PPCTargetObjectFile.h"
 #include "PPCTargetTransformInfo.h"
@@ -237,6 +238,23 @@ static CodeModel::Model getEffectivePPCCodeModel(const Triple &TT,
   return CodeModel::Small;
 }
 
+
+static ScheduleDAGInstrs *createPPCMachineScheduler(MachineSchedContext *C) {
+  ScheduleDAGMILive *DAG =
+    new ScheduleDAGMILive(C, llvm::make_unique<PPCPreRASchedStrategy>(C));
+  // add DAG Mutations here.
+  DAG->addMutation(createCopyConstrainDAGMutation(DAG->TII, DAG->TRI));
+  return DAG;
+}
+
+static ScheduleDAGInstrs *createPPCPostMachineScheduler(
+  MachineSchedContext *C) {
+  ScheduleDAGMI *DAG =
+    new ScheduleDAGMI(C, llvm::make_unique<PPCPostRASchedStrategy>(C), true);
+  // add DAG Mutations here.
+  return DAG;
+}
+
 // The FeatureString here is a little subtle. We are modifying the feature
 // string with what are (currently) non-function specific overrides as it goes
 // into the LLVMTargetMachine constructor and then using the stored value in the
@@ -330,6 +348,20 @@ public:
   void addPreRegAlloc() override;
   void addPreSched2() override;
   void addPreEmitPass() override;
+  ScheduleDAGInstrs *
+  createMachineScheduler(MachineSchedContext *C) const override {
+    const PPCSubtarget &ST = C->MF->getSubtarget<PPCSubtarget>();
+    if (ST.usePPCPreRASchedStrategy())
+      return createPPCMachineScheduler(C);
+    return nullptr;
+  }
+  ScheduleDAGInstrs *
+  createPostMachineScheduler(MachineSchedContext *C) const override {
+    const PPCSubtarget &ST = C->MF->getSubtarget<PPCSubtarget>();
+    if (ST.usePPCPostRASchedStrategy())
+      return createPPCPostMachineScheduler(C);
+    return nullptr;
+  }
 };
 
 } // end anonymous namespace
@@ -468,3 +500,13 @@ TargetTransformInfo
 PPCTargetMachine::getTargetTransformInfo(const Function &F) {
   return TargetTransformInfo(PPCTTIImpl(this, F));
 }
+
+static MachineSchedRegistry
+PPCPreRASchedRegistry("ppc-prera",
+                      "Run PowerPC PreRA specific scheduler",
+                      createPPCMachineScheduler);
+
+static MachineSchedRegistry
+PPCPostRASchedRegistry("ppc-postra",
+                       "Run PowerPC PostRA specific scheduler",
+                       createPPCPostMachineScheduler);