#define LLVM_CODEGEN_SELECTIONDAG_ISEL_H
#include "llvm/BasicBlock.h"
-#include "llvm/Pass.h"
-#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/Pass.h"
namespace llvm {
class FastISel;
///
unsigned DAGSize;
- /// ISelPosition - Node iterator marking the current position of
- /// instruction selection as it procedes through the topologically-sorted
- /// node list.
- SelectionDAG::allnodes_iterator ISelPosition;
-
-
- /// ISelUpdater - helper class to handle updates of the
- /// instruction selection graph.
- class ISelUpdater : public SelectionDAG::DAGUpdateListener {
- virtual void anchor();
- SelectionDAG::allnodes_iterator &ISelPosition;
- public:
- ISelUpdater(SelectionDAG &DAG, SelectionDAG::allnodes_iterator &isp)
- : SelectionDAG::DAGUpdateListener(DAG), ISelPosition(isp) {}
-
- /// NodeDeleted - Handle nodes deleted from the graph. If the
- /// node being deleted is the current ISelPosition node, update
- /// ISelPosition.
- ///
- virtual void NodeDeleted(SDNode *N, SDNode *E) {
- if (ISelPosition == SelectionDAG::allnodes_iterator(N))
- ++ISelPosition;
- }
- };
-
/// ReplaceUses - replace all uses of the old node F with the use
/// of the new node T.
void ReplaceUses(SDValue F, SDValue T) {
- ISelUpdater ISU(*CurDAG, ISelPosition);
CurDAG->ReplaceAllUsesOfValueWith(F, T);
}
/// ReplaceUses - replace all uses of the old nodes F with the use
/// of the new nodes T.
void ReplaceUses(const SDValue *F, const SDValue *T, unsigned Num) {
- ISelUpdater ISU(*CurDAG, ISelPosition);
CurDAG->ReplaceAllUsesOfValuesWith(F, T, Num);
}
/// ReplaceUses - replace all uses of the old node F with the use
/// of the new node T.
void ReplaceUses(SDNode *F, SDNode *T) {
- ISelUpdater ISU(*CurDAG, ISelPosition);
CurDAG->ReplaceAllUsesWith(F, T);
}