Remove dead code. Improve llvm_unreachable text. Simplify some control flow.

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

diff --git a/lib/CodeGen/MachineLoopInfo.cpp b/lib/CodeGen/MachineLoopInfo.cpp
index 63f4f18e4d51b6629bb520b15ce6881dcbfe6305..189cb2ba5d1dd1dd9a1473591d209229c6fb9307 100644 (file)
--- a/lib/CodeGen/MachineLoopInfo.cpp
+++ b/lib/CodeGen/MachineLoopInfo.cpp
@@ -17,20 +17,26 @@
 #include "llvm/CodeGen/MachineLoopInfo.h"
 #include "llvm/CodeGen/MachineDominators.h"
 #include "llvm/CodeGen/Passes.h"
+#include "llvm/Support/Debug.h"
 using namespace llvm;
 
+namespace llvm {
 #define MLB class LoopBase<MachineBasicBlock, MachineLoop>
 TEMPLATE_INSTANTIATION(MLB);
 #undef MLB
 #define MLIB class LoopInfoBase<MachineBasicBlock, MachineLoop>
 TEMPLATE_INSTANTIATION(MLIB);
 #undef MLIB
+}
 
 char MachineLoopInfo::ID = 0;
-static RegisterPass<MachineLoopInfo>
-X("machine-loops", "Machine Natural Loop Construction", true);
+INITIALIZE_PASS_BEGIN(MachineLoopInfo, "machine-loops",
+                "Machine Natural Loop Construction", true, true)
+INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
+INITIALIZE_PASS_END(MachineLoopInfo, "machine-loops",
+                "Machine Natural Loop Construction", true, true)
 
-const PassInfo *const llvm::MachineLoopInfoID = &X;
+char &llvm::MachineLoopInfoID = MachineLoopInfo::ID;
 
 bool MachineLoopInfo::runOnMachineFunction(MachineFunction &) {
   releaseMemory();
@@ -71,3 +77,7 @@ MachineBasicBlock *MachineLoop::getBottomBlock() {
   }
   return BotMBB;
 }
+
+void MachineLoop::dump() const {
+  print(dbgs());
+}