[AntidepBreaker] Move AntiDepBreaker to include folder.

This allows AntiDepBreaker to be used in target specific postRA
scheduler.

Differential Revision: https://reviews.llvm.org/D78047

llvm/include/llvm/CodeGen/AntiDepBreaker.h

@@ -19,6 +19,7 @@
 #include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/CodeGen/MachineOperand.h"
 #include "llvm/CodeGen/ScheduleDAG.h"
+#include "llvm/CodeGen/TargetSubtargetInfo.h"
 #include "llvm/Support/Compiler.h"
 #include <cassert>
 #include <utility>
@@ -26,9 +27,11 @@
 
 namespace llvm {
 
+class RegisterClassInfo;
+
 /// This class works in conjunction with the post-RA scheduler to rename
 /// registers to break register anti-dependencies (WAR hazards).
-class LLVM_LIBRARY_VISIBILITY AntiDepBreaker {
+class AntiDepBreaker {
 public:
   using DbgValueVector =
       std::vector<std::pair<MachineInstr *, MachineInstr *>>;
@@ -82,6 +85,13 @@ public:
   }
 };
 
+AntiDepBreaker *createAggressiveAntiDepBreaker(
+    MachineFunction &MFi, const RegisterClassInfo &RCI,
+    TargetSubtargetInfo::RegClassVector &CriticalPathRCs);
+
+AntiDepBreaker *createCriticalAntiDepBreaker(MachineFunction &MFi,
+                                             const RegisterClassInfo &RCI);
+
 } // end namespace llvm
 
 #endif // LLVM_LIB_CODEGEN_ANTIDEPBREAKER_H

llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp

@@ -1011,3 +1011,9 @@ unsigned AggressiveAntiDepBreaker::BreakAntiDependencies(
 
   return Broken;
 }
+
+AntiDepBreaker *llvm::createAggressiveAntiDepBreaker(
+    MachineFunction &MFi, const RegisterClassInfo &RCI,
+    TargetSubtargetInfo::RegClassVector &CriticalPathRCs) {
+  return new AggressiveAntiDepBreaker(MFi, RCI, CriticalPathRCs);
+}

llvm/lib/CodeGen/AggressiveAntiDepBreaker.h

@@ -16,8 +16,8 @@
 #ifndef LLVM_LIB_CODEGEN_AGGRESSIVEANTIDEPBREAKER_H
 #define LLVM_LIB_CODEGEN_AGGRESSIVEANTIDEPBREAKER_H
 
-#include "AntiDepBreaker.h"
 #include "llvm/ADT/BitVector.h"
+#include "llvm/CodeGen/AntiDepBreaker.h"
 #include "llvm/CodeGen/TargetSubtargetInfo.h"
 #include "llvm/Support/Compiler.h"
 #include <map>

llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp

@@ -702,3 +702,9 @@ BreakAntiDependencies(const std::vector<SUnit> &SUnits,
 
   return Broken;
 }
+
+AntiDepBreaker *
+llvm::createCriticalAntiDepBreaker(MachineFunction &MFi,
+                                   const RegisterClassInfo &RCI) {
+  return new CriticalAntiDepBreaker(MFi, RCI);
+}

llvm/lib/CodeGen/CriticalAntiDepBreaker.h

@@ -15,8 +15,8 @@
 #ifndef LLVM_LIB_CODEGEN_CRITICALANTIDEPBREAKER_H
 #define LLVM_LIB_CODEGEN_CRITICALANTIDEPBREAKER_H
 
-#include "AntiDepBreaker.h"
 #include "llvm/ADT/BitVector.h"
+#include "llvm/CodeGen/AntiDepBreaker.h"
 #include "llvm/Support/Compiler.h"
 #include <map>
 #include <vector>

llvm/lib/CodeGen/PostRASchedulerList.cpp

@@ -17,11 +17,9 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "AggressiveAntiDepBreaker.h"
-#include "AntiDepBreaker.h"
-#include "CriticalAntiDepBreaker.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/CodeGen/AntiDepBreaker.h"
 #include "llvm/CodeGen/LatencyPriorityQueue.h"
 #include "llvm/CodeGen/MachineDominators.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
@@ -220,11 +218,11 @@ SchedulePostRATDList::SchedulePostRATDList(
   assert((AntiDepMode == TargetSubtargetInfo::ANTIDEP_NONE ||
           MRI.tracksLiveness()) &&
          "Live-ins must be accurate for anti-dependency breaking");
-  AntiDepBreak =
-    ((AntiDepMode == TargetSubtargetInfo::ANTIDEP_ALL) ?
-     (AntiDepBreaker *)new AggressiveAntiDepBreaker(MF, RCI, CriticalPathRCs) :
-     ((AntiDepMode == TargetSubtargetInfo::ANTIDEP_CRITICAL) ?
-      (AntiDepBreaker *)new CriticalAntiDepBreaker(MF, RCI) : nullptr));
+  AntiDepBreak = ((AntiDepMode == TargetSubtargetInfo::ANTIDEP_ALL)
+                      ? createAggressiveAntiDepBreaker(MF, RCI, CriticalPathRCs)
+                      : ((AntiDepMode == TargetSubtargetInfo::ANTIDEP_CRITICAL)
+                             ? createCriticalAntiDepBreaker(MF, RCI)
+                             : nullptr));
 }
 
 SchedulePostRATDList::~SchedulePostRATDList() {