Porting Hexagon MI Scheduler to the new API.
Change current Hexagon MI scheduler to use new converging
scheduler. Integrates DFA resource model into it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163137 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Hexagon/HexagonTargetMachine.cpp b/lib/Target/Hexagon/HexagonTargetMachine.cpp
index a7b291f..5688e9c 100644
--- a/lib/Target/Hexagon/HexagonTargetMachine.cpp
+++ b/lib/Target/Hexagon/HexagonTargetMachine.cpp
@@ -14,6 +14,7 @@
#include "HexagonTargetMachine.h"
#include "Hexagon.h"
#include "HexagonISelLowering.h"
+#include "HexagonMachineScheduler.h"
#include "llvm/Module.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/PassManager.h"
@@ -29,6 +30,11 @@
"disable-hexagon-hwloops", cl::Hidden,
cl::desc("Disable Hardware Loops for Hexagon target"));
+static cl::
+opt<bool> DisableHexagonMISched("disable-hexagon-misched",
+ cl::Hidden, cl::ZeroOrMore, cl::init(false),
+ cl::desc("Disable Hexagon MI Scheduling"));
+
/// HexagonTargetMachineModule - Note that this is used on hosts that
/// cannot link in a library unless there are references into the
/// library. In particular, it seems that it is not possible to get
@@ -42,6 +48,13 @@
RegisterTargetMachine<HexagonTargetMachine> X(TheHexagonTarget);
}
+static ScheduleDAGInstrs *createVLIWMachineSched(MachineSchedContext *C) {
+ return new VLIWMachineScheduler(C, new ConvergingVLIWScheduler());
+}
+
+static MachineSchedRegistry
+SchedCustomRegistry("hexagon", "Run Hexagon's custom scheduler",
+ createVLIWMachineSched);
/// HexagonTargetMachine ctor - Create an ILP32 architecture model.
///
@@ -83,7 +96,13 @@
class HexagonPassConfig : public TargetPassConfig {
public:
HexagonPassConfig(HexagonTargetMachine *TM, PassManagerBase &PM)
- : TargetPassConfig(TM, PM) {}
+ : TargetPassConfig(TM, PM) {
+ // Enable MI scheduler.
+ if (!DisableHexagonMISched) {
+ enablePass(&MachineSchedulerID);
+ MachineSchedRegistry::setDefault(createVLIWMachineSched);
+ }
+ }
HexagonTargetMachine &getHexagonTargetMachine() const {
return getTM<HexagonTargetMachine>();