Only add true dep. edges from an earlier to a later instruction.
This wasn't a problem until we started putting copies for Phi values
that produced cycles in the SchedGraph!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1254 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/InstrSched/SchedGraph.h b/lib/CodeGen/InstrSched/SchedGraph.h
index 6f6739b..dc5d0059 100644
--- a/lib/CodeGen/InstrSched/SchedGraph.h
+++ b/lib/CodeGen/InstrSched/SchedGraph.h
@@ -146,6 +146,7 @@
const MachineInstr* minstr;
vector<SchedGraphEdge*> inEdges;
vector<SchedGraphEdge*> outEdges;
+ int origIndexInBB; // original position of machine instr in BB
int latency;
public:
@@ -166,6 +167,7 @@
unsigned int getNumInEdges () const { return inEdges.size(); }
unsigned int getNumOutEdges () const { return outEdges.size(); }
bool isDummyNode () const { return (minstr == NULL); }
+ int getOrigIndexInBB() const { return origIndexInBB; }
//
// Iterators
@@ -203,6 +205,7 @@
/*ctor*/ SchedGraphNode (unsigned int _nodeId,
const Instruction* _instr,
const MachineInstr* _minstr,
+ int indexInBB,
const TargetMachine& _target);
/*dtor*/ ~SchedGraphNode ();
};
@@ -303,8 +306,8 @@
//
void buildGraph (const TargetMachine& target);
- void buildNodesforVMInstr (const TargetMachine& target,
- const Instruction* instr,
+ void buildNodesforBB (const TargetMachine& target,
+ const BasicBlock* bb,
vector<SchedGraphNode*>& memNodeVec,
RegToRefVecMap& regToRefVecMap,
ValueToDefVecMap& valueToDefVecMap);