Move ScheduleDAGSDNodes.h to be a private header. Front-ends
that previously included this header should include
SchedulerRegistry.h instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63937 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
index 5154fb1..e43b992 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
@@ -12,7 +12,7 @@
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "pre-RA-sched"
-#include "llvm/CodeGen/ScheduleDAGSDNodes.h"
+#include "ScheduleDAGSDNodes.h"
#include "llvm/CodeGen/SchedulerRegistry.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/Target/TargetRegisterInfo.h"
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
index 41be253..b0b9e4c 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGList.cpp
@@ -19,8 +19,8 @@
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "pre-RA-sched"
+#include "ScheduleDAGSDNodes.h"
#include "llvm/CodeGen/LatencyPriorityQueue.h"
-#include "llvm/CodeGen/ScheduleDAGSDNodes.h"
#include "llvm/CodeGen/ScheduleHazardRecognizer.h"
#include "llvm/CodeGen/SchedulerRegistry.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index 5eaf596..bff8570 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -16,7 +16,7 @@
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "pre-RA-sched"
-#include "llvm/CodeGen/ScheduleDAGSDNodes.h"
+#include "ScheduleDAGSDNodes.h"
#include "llvm/CodeGen/SchedulerRegistry.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/Target/TargetRegisterInfo.h"
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
index e2c1e28..2620c72 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
@@ -13,7 +13,7 @@
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "pre-RA-sched"
-#include "llvm/CodeGen/ScheduleDAGSDNodes.h"
+#include "ScheduleDAGSDNodes.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetInstrInfo.h"
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.h b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.h
new file mode 100644
index 0000000..6fa0e15
--- /dev/null
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.h
@@ -0,0 +1,161 @@
+//===---- ScheduleDAGSDNodes.h - SDNode Scheduling --------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the ScheduleDAGSDNodes class, which implements
+// scheduling for an SDNode-based dependency graph.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCHEDULEDAGSDNODES_H
+#define SCHEDULEDAGSDNODES_H
+
+#include "llvm/CodeGen/ScheduleDAG.h"
+#include "llvm/CodeGen/SelectionDAG.h"
+
+namespace llvm {
+ /// ScheduleDAGSDNodes - A ScheduleDAG for scheduling SDNode-based DAGs.
+ ///
+ /// Edges between SUnits are initially based on edges in the SelectionDAG,
+ /// and additional edges can be added by the schedulers as heuristics.
+ /// SDNodes such as Constants, Registers, and a few others that are not
+ /// interesting to schedulers are not allocated SUnits.
+ ///
+ /// SDNodes with MVT::Flag operands are grouped along with the flagged
+ /// nodes into a single SUnit so that they are scheduled together.
+ ///
+ /// SDNode-based scheduling graphs do not use SDep::Anti or SDep::Output
+ /// edges. Physical register dependence information is not carried in
+ /// the DAG and must be handled explicitly by schedulers.
+ ///
+ class ScheduleDAGSDNodes : public ScheduleDAG {
+ public:
+ explicit ScheduleDAGSDNodes(MachineFunction &mf);
+
+ virtual ~ScheduleDAGSDNodes() {}
+
+ /// isPassiveNode - Return true if the node is a non-scheduled leaf.
+ ///
+ static bool isPassiveNode(SDNode *Node) {
+ if (isa<ConstantSDNode>(Node)) return true;
+ if (isa<ConstantFPSDNode>(Node)) return true;
+ if (isa<RegisterSDNode>(Node)) return true;
+ if (isa<GlobalAddressSDNode>(Node)) return true;
+ if (isa<BasicBlockSDNode>(Node)) return true;
+ if (isa<FrameIndexSDNode>(Node)) return true;
+ if (isa<ConstantPoolSDNode>(Node)) return true;
+ if (isa<JumpTableSDNode>(Node)) return true;
+ if (isa<ExternalSymbolSDNode>(Node)) return true;
+ if (isa<MemOperandSDNode>(Node)) return true;
+ if (Node->getOpcode() == ISD::EntryToken) return true;
+ return false;
+ }
+
+ /// NewSUnit - Creates a new SUnit and return a ptr to it.
+ ///
+ SUnit *NewSUnit(SDNode *N) {
+#ifndef NDEBUG
+ const SUnit *Addr = 0;
+ if (!SUnits.empty())
+ Addr = &SUnits[0];
+#endif
+ SUnits.push_back(SUnit(N, (unsigned)SUnits.size()));
+ assert((Addr == 0 || Addr == &SUnits[0]) &&
+ "SUnits std::vector reallocated on the fly!");
+ SUnits.back().OrigNode = &SUnits.back();
+ return &SUnits.back();
+ }
+
+ /// Clone - Creates a clone of the specified SUnit. It does not copy the
+ /// predecessors / successors info nor the temporary scheduling states.
+ ///
+ SUnit *Clone(SUnit *N);
+
+ virtual SelectionDAG *getDAG() { return DAG; }
+
+ /// BuildSchedGraph - Build the SUnit graph from the selection dag that we
+ /// are input. This SUnit graph is similar to the SelectionDAG, but
+ /// excludes nodes that aren't interesting to scheduling, and represents
+ /// flagged together nodes with a single SUnit.
+ virtual void BuildSchedGraph();
+
+ /// ComputeLatency - Compute node latency.
+ ///
+ virtual void ComputeLatency(SUnit *SU);
+
+ /// CountResults - The results of target nodes have register or immediate
+ /// operands first, then an optional chain, and optional flag operands
+ /// (which do not go into the machine instrs.)
+ static unsigned CountResults(SDNode *Node);
+
+ /// CountOperands - The inputs to target nodes have any actual inputs first,
+ /// followed by special operands that describe memory references, then an
+ /// optional chain operand, then flag operands. Compute the number of
+ /// actual operands that will go into the resulting MachineInstr.
+ static unsigned CountOperands(SDNode *Node);
+
+ /// ComputeMemOperandsEnd - Find the index one past the last
+ /// MemOperandSDNode operand
+ static unsigned ComputeMemOperandsEnd(SDNode *Node);
+
+ /// EmitNode - Generate machine code for an node and needed dependencies.
+ /// VRBaseMap contains, for each already emitted node, the first virtual
+ /// register number for the results of the node.
+ ///
+ void EmitNode(SDNode *Node, bool IsClone, bool HasClone,
+ DenseMap<SDValue, unsigned> &VRBaseMap);
+
+ virtual MachineBasicBlock *EmitSchedule();
+
+ /// Schedule - Order nodes according to selected style, filling
+ /// in the Sequence member.
+ ///
+ virtual void Schedule() = 0;
+
+ virtual void dumpNode(const SUnit *SU) const;
+
+ virtual std::string getGraphNodeLabel(const SUnit *SU) const;
+
+ virtual void getCustomGraphFeatures(GraphWriter<ScheduleDAG*> &GW) const;
+
+ private:
+ /// EmitSubregNode - Generate machine code for subreg nodes.
+ ///
+ void EmitSubregNode(SDNode *Node,
+ DenseMap<SDValue, unsigned> &VRBaseMap);
+
+ /// getVR - Return the virtual register corresponding to the specified result
+ /// of the specified node.
+ unsigned getVR(SDValue Op, DenseMap<SDValue, unsigned> &VRBaseMap);
+
+ /// getDstOfCopyToRegUse - If the only use of the specified result number of
+ /// node is a CopyToReg, return its destination register. Return 0 otherwise.
+ unsigned getDstOfOnlyCopyToRegUse(SDNode *Node, unsigned ResNo) const;
+
+ void AddOperand(MachineInstr *MI, SDValue Op, unsigned IIOpNum,
+ const TargetInstrDesc *II,
+ DenseMap<SDValue, unsigned> &VRBaseMap);
+
+ /// EmitCopyFromReg - Generate machine code for an CopyFromReg node or an
+ /// implicit physical register output.
+ void EmitCopyFromReg(SDNode *Node, unsigned ResNo, bool IsClone,
+ bool IsCloned, unsigned SrcReg,
+ DenseMap<SDValue, unsigned> &VRBaseMap);
+
+ void CreateVirtualRegisters(SDNode *Node, MachineInstr *MI,
+ const TargetInstrDesc &II, bool IsClone,
+ bool IsCloned,
+ DenseMap<SDValue, unsigned> &VRBaseMap);
+
+ /// BuildSchedUnits, AddSchedEdges - Helper functions for BuildSchedGraph.
+ void BuildSchedUnits();
+ void AddSchedEdges();
+ };
+}
+
+#endif
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp
index 06cae7d..54bfc44 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp
@@ -13,7 +13,7 @@
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "pre-RA-sched"
-#include "llvm/CodeGen/ScheduleDAGSDNodes.h"
+#include "ScheduleDAGSDNodes.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index f8289f9..7bef039 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -12,8 +12,9 @@
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "isel"
-#include "llvm/CodeGen/SelectionDAGISel.h"
+#include "ScheduleDAGSDNodes.h"
#include "SelectionDAGBuild.h"
+#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Constants.h"
#include "llvm/CallingConv.h"
@@ -33,7 +34,6 @@
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/ScheduleDAGSDNodes.h"
#include "llvm/CodeGen/ScheduleHazardRecognizer.h"
#include "llvm/CodeGen/SchedulerRegistry.h"
#include "llvm/CodeGen/SelectionDAG.h"
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
index 9396f16..004cb24 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
@@ -11,11 +11,11 @@
//
//===----------------------------------------------------------------------===//
+#include "ScheduleDAGSDNodes.h"
#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/SelectionDAG.h"
-#include "llvm/CodeGen/ScheduleDAGSDNodes.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"