//
//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "stackmaps"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/StackMapLivenessAnalysis.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
-
+#include "llvm/Target/TargetSubtargetInfo.h"
using namespace llvm;
+#define DEBUG_TYPE "stackmaps"
+
namespace llvm {
-cl::opt<bool> EnableStackMapLiveness("enable-stackmap-liveness",
- cl::Hidden, cl::desc("Enable StackMap Liveness Analysis Pass"));
cl::opt<bool> EnablePatchPointLiveness("enable-patchpoint-liveness",
- cl::Hidden, cl::desc("Enable PatchPoint Liveness Analysis Pass"));
+ cl::Hidden, cl::init(true),
+ cl::desc("Enable PatchPoint Liveness Analysis Pass"));
}
STATISTIC(NumStackMapFuncVisited, "Number of functions visited");
/// Calculate the liveness information for the given machine function.
bool StackMapLiveness::runOnMachineFunction(MachineFunction &_MF) {
+ if (!EnablePatchPointLiveness)
+ return false;
+
DEBUG(dbgs() << "********** COMPUTING STACKMAP LIVENESS: "
<< _MF.getName() << " **********\n");
MF = &_MF;
- TRI = MF->getTarget().getRegisterInfo();
+ TRI = MF->getSubtarget().getRegisterInfo();
++NumStackMapFuncVisited;
- // Skip this function if there are no stackmaps or patchpoints to process.
- if (!((MF->getFrameInfo()->hasStackMap() && EnableStackMapLiveness) ||
- (MF->getFrameInfo()->hasPatchPoint() && EnablePatchPointLiveness))) {
+ // Skip this function if there are no patchpoints to process.
+ if (!MF->getFrameInfo()->hasPatchPoint()) {
++NumStackMapFuncSkipped;
return false;
}
LiveRegs.addLiveOuts(MBBI);
bool HasStackMap = false;
// Reverse iterate over all instructions and add the current live register
- // set to an instruction if we encounter a stackmap or patchpoint
- // instruction.
+ // set to an instruction if we encounter a patchpoint instruction.
for (MachineBasicBlock::reverse_iterator I = MBBI->rbegin(),
E = MBBI->rend(); I != E; ++I) {
- int Opc = I->getOpcode();
- if ((EnableStackMapLiveness && (Opc == TargetOpcode::STACKMAP)) ||
- (EnablePatchPointLiveness && (Opc == TargetOpcode::PATCHPOINT))) {
+ if (I->getOpcode() == TargetOpcode::PATCHPOINT) {
addLiveOutSetToMI(*I);
HasChanged = true;
HasStackMap = true;
++NumStackMaps;
}
- DEBUG(dbgs() << " " << *I << " " << LiveRegs);
+ DEBUG(dbgs() << " " << LiveRegs << " " << *I);
LiveRegs.stepBackward(*I);
}
++NumBBsVisited;