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Initial support for carrying MachineInstrs in SUnits.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59278 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-11-14 00:06:09 +00:00
parent c3c129fd8b
commit f449bf36ef
3 changed files with 66 additions and 8 deletions
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43
include/llvm/CodeGen/ScheduleDAG.h
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@@ -94,6 +94,7 @@ namespace llvm {
struct SUnit {
private:
SDNode *Node; // Representative node.
MachineInstr *Instr; // Alternatively, a MachineInstr.
public:
SUnit *OrigNode; // If not this, the node from which
// this node was cloned.
@@ -128,19 +129,53 @@ namespace llvm {
const TargetRegisterClass *CopyDstRC; // Is a special copy node if not null.
const TargetRegisterClass *CopySrcRC;
/// SUnit - Construct an SUnit for pre-regalloc scheduling to represent
/// an SDNode and any nodes flagged to it.
SUnit(SDNode *node, unsigned nodenum)
: Node(node), OrigNode(0), NodeNum(nodenum), NodeQueueId(0), Latency(0),
NumPreds(0), NumSuccs(0), NumPredsLeft(0), NumSuccsLeft(0),
: Node(node), Instr(0), OrigNode(0), NodeNum(nodenum), NodeQueueId(0),
Latency(0), NumPreds(0), NumSuccs(0), NumPredsLeft(0), NumSuccsLeft(0),
isTwoAddress(false), isCommutable(false), hasPhysRegDefs(false),
isPending(false), isAvailable(false), isScheduled(false),
CycleBound(0), Cycle(0), Depth(0), Height(0),
CopyDstRC(NULL), CopySrcRC(NULL) {}
/// SUnit - Construct an SUnit for post-regalloc scheduling to represent
/// a MachineInstr.
SUnit(MachineInstr *instr, unsigned nodenum)
: Node(0), Instr(instr), OrigNode(0), NodeNum(nodenum), NodeQueueId(0),
Latency(0), NumPreds(0), NumSuccs(0), NumPredsLeft(0), NumSuccsLeft(0),
isTwoAddress(false), isCommutable(false), hasPhysRegDefs(false),
isPending(false), isAvailable(false), isScheduled(false),
CycleBound(0), Cycle(0), Depth(0), Height(0),
CopyDstRC(NULL), CopySrcRC(NULL) {}
/// setNode - Assign the representative SDNode for this SUnit.
void setNode(SDNode *N) { Node = N; }
/// This may be used during pre-regalloc scheduling.
void setNode(SDNode *N) {
assert(!Instr && "Setting SDNode of SUnit with MachineInstr!");
Node = N;
}
/// getNode - Return the representative SDNode for this SUnit.
SDNode *getNode() const { return Node; }
/// This may be used during pre-regalloc scheduling.
SDNode *getNode() const {
assert(!Instr && "Reading SDNode of SUnit with MachineInstr!");
return Node;
}
/// setInstr - Assign the instruction for the SUnit.
/// This may be used during post-regalloc scheduling.
void setInstr(MachineInstr *MI) {
assert(!Node && "Setting MachineInstr of SUnit with SDNode!");
Instr = MI;
}
/// getInstr - Return the representative MachineInstr for this SUnit.
/// This may be used during post-regalloc scheduling.
MachineInstr *getInstr() const {
assert(!Node && "Reading MachineInstr of SUnit with SDNode!");
return Instr;
}
/// addPred - This adds the specified node as a pred of the current node if
/// not already. This returns true if this is a new pred.