Delete unused method.

[oota-llvm.git] / lib / CodeGen / StackMapLivenessAnalysis.cpp

diff --git a/lib/CodeGen/StackMapLivenessAnalysis.cpp b/lib/CodeGen/StackMapLivenessAnalysis.cpp
index cff38ac618b175f962c5ac2dc9dbb1c062f295f5..c2ee87a3de8f16e4143f2206a446a83ff82a8ae6 100644 (file)
--- a/lib/CodeGen/StackMapLivenessAnalysis.cpp
+++ b/lib/CodeGen/StackMapLivenessAnalysis.cpp
@@ -13,7 +13,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define DEBUG_TYPE "stackmaps"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
@@ -22,15 +21,16 @@
 #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");
@@ -61,15 +61,17 @@ void StackMapLiveness::getAnalysisUsage(AnalysisUsage &AU) const {
 
 /// 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;
   }
@@ -87,13 +89,10 @@ bool StackMapLiveness::calculateLiveness() {
     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;