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-rw-r--r--cpu/o3/dep_graph.hh213
1 files changed, 0 insertions, 213 deletions
diff --git a/cpu/o3/dep_graph.hh b/cpu/o3/dep_graph.hh
deleted file mode 100644
index f8ae38da4..000000000
--- a/cpu/o3/dep_graph.hh
+++ /dev/null
@@ -1,213 +0,0 @@
-
-#ifndef __CPU_O3_DEP_GRAPH_HH__
-#define __CPU_O3_DEP_GRAPH_HH__
-
-#include "cpu/o3/comm.hh"
-
-template <class DynInstPtr>
-class DependencyEntry
-{
- public:
- DependencyEntry()
- : inst(NULL), next(NULL)
- { }
-
- DynInstPtr inst;
- //Might want to include data about what arch. register the
- //dependence is waiting on.
- DependencyEntry<DynInstPtr> *next;
-};
-
-template <class DynInstPtr>
-class DependencyGraph
-{
- public:
- typedef DependencyEntry<DynInstPtr> DepEntry;
-
- DependencyGraph()
- : numEntries(0), memAllocCounter(0), nodesTraversed(0), nodesRemoved(0)
- { }
-
- void resize(int num_entries);
-
- void reset();
-
- void insert(PhysRegIndex idx, DynInstPtr &new_inst);
-
- void setInst(PhysRegIndex idx, DynInstPtr &new_inst)
- { dependGraph[idx].inst = new_inst; }
-
- void clearInst(PhysRegIndex idx)
- { dependGraph[idx].inst = NULL; }
-
- void remove(PhysRegIndex idx, DynInstPtr &inst_to_remove);
-
- DynInstPtr pop(PhysRegIndex idx);
-
- bool empty(PhysRegIndex idx) { return !dependGraph[idx].next; }
-
- /** Debugging function to dump out the dependency graph.
- */
- void dump();
-
- private:
- /** Array of linked lists. Each linked list is a list of all the
- * instructions that depend upon a given register. The actual
- * register's index is used to index into the graph; ie all
- * instructions in flight that are dependent upon r34 will be
- * in the linked list of dependGraph[34].
- */
- DepEntry *dependGraph;
-
- int numEntries;
-
- // Debug variable, remove when done testing.
- unsigned memAllocCounter;
-
- public:
- uint64_t nodesTraversed;
- uint64_t nodesRemoved;
-};
-
-template <class DynInstPtr>
-void
-DependencyGraph<DynInstPtr>::resize(int num_entries)
-{
- numEntries = num_entries;
- dependGraph = new DepEntry[numEntries];
-}
-
-template <class DynInstPtr>
-void
-DependencyGraph<DynInstPtr>::reset()
-{
- // Clear the dependency graph
- DepEntry *curr;
- DepEntry *prev;
-
- for (int i = 0; i < numEntries; ++i) {
- curr = dependGraph[i].next;
-
- while (curr) {
- memAllocCounter--;
-
- prev = curr;
- curr = prev->next;
- prev->inst = NULL;
-
- delete prev;
- }
-
- if (dependGraph[i].inst) {
- dependGraph[i].inst = NULL;
- }
-
- dependGraph[i].next = NULL;
- }
-}
-
-template <class DynInstPtr>
-void
-DependencyGraph<DynInstPtr>::insert(PhysRegIndex idx, DynInstPtr &new_inst)
-{
- //Add this new, dependent instruction at the head of the dependency
- //chain.
-
- // First create the entry that will be added to the head of the
- // dependency chain.
- DepEntry *new_entry = new DepEntry;
- new_entry->next = dependGraph[idx].next;
- new_entry->inst = new_inst;
-
- // Then actually add it to the chain.
- dependGraph[idx].next = new_entry;
-
- ++memAllocCounter;
-}
-
-
-template <class DynInstPtr>
-void
-DependencyGraph<DynInstPtr>::remove(PhysRegIndex idx,
- DynInstPtr &inst_to_remove)
-{
- DepEntry *prev = &dependGraph[idx];
- DepEntry *curr = dependGraph[idx].next;
-
- // Make sure curr isn't NULL. Because this instruction is being
- // removed from a dependency list, it must have been placed there at
- // an earlier time. The dependency chain should not be empty,
- // unless the instruction dependent upon it is already ready.
- if (curr == NULL) {
- return;
- }
-
- nodesRemoved++;
-
- // Find the instruction to remove within the dependency linked list.
- while (curr->inst != inst_to_remove) {
- prev = curr;
- curr = curr->next;
- nodesTraversed++;
-
- assert(curr != NULL);
- }
-
- // Now remove this instruction from the list.
- prev->next = curr->next;
-
- --memAllocCounter;
-
- // Could push this off to the destructor of DependencyEntry
- curr->inst = NULL;
-
- delete curr;
-}
-
-template <class DynInstPtr>
-DynInstPtr
-DependencyGraph<DynInstPtr>::pop(PhysRegIndex idx)
-{
- DepEntry *node;
- node = dependGraph[idx].next;
- DynInstPtr inst = NULL;
- if (node) {
- inst = node->inst;
- dependGraph[idx].next = node->next;
- node->inst = NULL;
- memAllocCounter--;
- delete node;
- }
- return inst;
-}
-
-template <class DynInstPtr>
-void
-DependencyGraph<DynInstPtr>::dump()
-{
- DepEntry *curr;
-
- for (int i = 0; i < numEntries; ++i)
- {
- curr = &dependGraph[i];
-
- if (curr->inst) {
- cprintf("dependGraph[%i]: producer: %#x [sn:%lli] consumer: ",
- i, curr->inst->readPC(), curr->inst->seqNum);
- } else {
- cprintf("dependGraph[%i]: No producer. consumer: ", i);
- }
-
- while (curr->next != NULL) {
- curr = curr->next;
-
- cprintf("%#x [sn:%lli] ",
- curr->inst->readPC(), curr->inst->seqNum);
- }
-
- cprintf("\n");
- }
- cprintf("memAllocCounter: %i\n", memAllocCounter);
-}
-
-#endif // __CPU_O3_DEP_GRAPH_HH__