Move a few containers out of ScheduleDAGInstrs::BuildSchedGraph
and into the ScheduleDAGInstrs class, so that they don't get
destructed and re-constructed for each block. This fixes a
compile-time hot spot in the post-pass scheduler.
To help facilitate this, tidy and do some minor reorganization
in the scheduler constructor functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62275 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
index b864929..5154fb1 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
@@ -14,9 +14,9 @@
#define DEBUG_TYPE "pre-RA-sched"
#include "llvm/CodeGen/ScheduleDAGSDNodes.h"
#include "llvm/CodeGen/SchedulerRegistry.h"
+#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetData.h"
-#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Compiler.h"
@@ -71,9 +71,8 @@
std::vector<unsigned> LiveRegCycles;
public:
- ScheduleDAGFast(SelectionDAG *dag, MachineBasicBlock *bb,
- const TargetMachine &tm)
- : ScheduleDAGSDNodes(dag, bb, tm) {}
+ ScheduleDAGFast(MachineFunction &mf)
+ : ScheduleDAGSDNodes(mf) {}
void Schedule();
@@ -619,9 +618,6 @@
// Public Constructor Functions
//===----------------------------------------------------------------------===//
-llvm::ScheduleDAG* llvm::createFastDAGScheduler(SelectionDAGISel *IS,
- SelectionDAG *DAG,
- const TargetMachine *TM,
- MachineBasicBlock *BB, bool) {
- return new ScheduleDAGFast(DAG, BB, *TM);
+llvm::ScheduleDAG* llvm::createFastDAGScheduler(SelectionDAGISel *IS, bool) {
+ return new ScheduleDAGFast(*IS->MF);
}