Move the decision logic whether it's a good idea to split a critical edge to clients. Also fixed an erroneous check. An edge is only a back edge when the from and to blocks are in the same loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111256 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/PHIElimination.h b/lib/CodeGen/PHIElimination.h
index f183de6..b054732 100644
--- a/lib/CodeGen/PHIElimination.h
+++ b/lib/CodeGen/PHIElimination.h
@@ -13,15 +13,18 @@
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
namespace llvm {
class LiveVariables;
+ class MachineRegisterInfo;
+ class MachineLoopInfo;
/// Lower PHI instructions to copies.
class PHIElimination : public MachineFunctionPass {
- MachineRegisterInfo *MRI; // Machine register information
+ MachineRegisterInfo *MRI; // Machine register information
+ MachineLoopInfo *MLI;
public:
static char ID; // Pass identification, replacement for typeid