From 412cd2f81374865dfa708bef6d5b896ca10dece0 Mon Sep 17 00:00:00 2001
From: Andrew Trick <atrick@apple.com>
Date: Wed, 10 Oct 2012 05:43:09 +0000
Subject: misched: Use the TargetSchedModel interface wherever possible.

Allows the new machine model to be used for NumMicroOps and OutputLatency.

Allows the HazardRecognizer to be disabled along with itineraries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165603 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Hexagon/HexagonMachineScheduler.h | 33 +++++++++++-----------------
 1 file changed, 13 insertions(+), 20 deletions(-)

(limited to 'lib/Target/Hexagon/HexagonMachineScheduler.h')

diff --git a/lib/Target/Hexagon/HexagonMachineScheduler.h b/lib/Target/Hexagon/HexagonMachineScheduler.h
index 5b6f226..fe0242a 100644
--- a/lib/Target/Hexagon/HexagonMachineScheduler.h
+++ b/lib/Target/Hexagon/HexagonMachineScheduler.h
@@ -45,7 +45,7 @@ class VLIWResourceModel {
   /// definition of DFA by a target.
   DFAPacketizer *ResourcesModel;
 
-  const InstrItineraryData *InstrItins;
+  const TargetSchedModel *SchedModel;
 
   /// Local packet/bundle model. Purely
   /// internal to the MI schedulre at the time.
@@ -55,29 +55,15 @@ class VLIWResourceModel {
   unsigned TotalPackets;
 
 public:
-  VLIWResourceModel(MachineSchedContext *C, const InstrItineraryData *IID) :
-    InstrItins(IID), TotalPackets(0) {
-    const TargetMachine &TM = C->MF->getTarget();
+VLIWResourceModel(const TargetMachine &TM, const TargetSchedModel *SM) :
+    SchedModel(SM), TotalPackets(0) {
     ResourcesModel = TM.getInstrInfo()->CreateTargetScheduleState(&TM,NULL);
 
     // This hard requirement could be relaxed,
     // but for now do not let it proceed.
     assert(ResourcesModel && "Unimplemented CreateTargetScheduleState.");
 
-    Packet.resize(InstrItins->SchedModel->IssueWidth);
-    Packet.clear();
-    ResourcesModel->clearResources();
-  }
-
-  VLIWResourceModel(const TargetMachine &TM) :
-    InstrItins(TM.getInstrItineraryData()), TotalPackets(0) {
-    ResourcesModel = TM.getInstrInfo()->CreateTargetScheduleState(&TM,NULL);
-
-    // This hard requirement could be relaxed,
-    // but for now do not let it proceed.
-    assert(ResourcesModel && "Unimplemented CreateTargetScheduleState.");
-
-    Packet.resize(InstrItins->SchedModel->IssueWidth);
+    Packet.resize(SchedModel->getIssueWidth());
     Packet.clear();
     ResourcesModel->clearResources();
   }
@@ -146,6 +132,7 @@ class ConvergingVLIWScheduler : public MachineSchedStrategy {
   /// of "hazards" and other interlocks at the current cycle.
   struct SchedBoundary {
     VLIWMachineScheduler *DAG;
+    const TargetSchedModel *SchedModel;
 
     ReadyQueue Available;
     ReadyQueue Pending;
@@ -166,7 +153,7 @@ class ConvergingVLIWScheduler : public MachineSchedStrategy {
     /// Pending queues extend the ready queues with the same ID and the
     /// PendingFlag set.
     SchedBoundary(unsigned ID, const Twine &Name):
-      DAG(0), Available(ID, Name+".A"),
+      DAG(0), SchedModel(0), Available(ID, Name+".A"),
       Pending(ID << ConvergingVLIWScheduler::LogMaxQID, Name+".P"),
       CheckPending(false), HazardRec(0), ResourceModel(0),
       CurrCycle(0), IssueCount(0),
@@ -177,6 +164,11 @@ class ConvergingVLIWScheduler : public MachineSchedStrategy {
       delete HazardRec;
     }
 
+    void init(VLIWMachineScheduler *dag, const TargetSchedModel *smodel) {
+      DAG = dag;
+      SchedModel = smodel;
+    }
+
     bool isTop() const {
       return Available.getID() == ConvergingVLIWScheduler::TopQID;
     }
@@ -197,6 +189,7 @@ class ConvergingVLIWScheduler : public MachineSchedStrategy {
   };
 
   VLIWMachineScheduler *DAG;
+  const TargetSchedModel *SchedModel;
   const TargetRegisterInfo *TRI;
 
   // State of the top and bottom scheduled instruction boundaries.
@@ -212,7 +205,7 @@ public:
   };
 
   ConvergingVLIWScheduler():
-    DAG(0), TRI(0), Top(TopQID, "TopQ"), Bot(BotQID, "BotQ") {}
+    DAG(0), SchedModel(0), TRI(0), Top(TopQID, "TopQ"), Bot(BotQID, "BotQ") {}
 
   virtual void initialize(ScheduleDAGMI *dag);
 
-- 
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