Make early if conversion dependent upon the subtarget and add

a subtarget hook to enable. Unconditionally add to the pass pipeline
for targets that might want to use it. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209340 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetSubtargetInfo.h b/include/llvm/Target/TargetSubtargetInfo.h
index e3febfb40f..c0c342b22e 100644
--- a/include/llvm/Target/TargetSubtargetInfo.h
+++ b/include/llvm/Target/TargetSubtargetInfo.h
@@ -94,6 +94,9 @@ public:
   /// scheduling, DAGCombine, etc.).
   virtual bool useAA() const;
 
+  /// \brief Enable the use of the early if conversion pass.
+  virtual bool enableEarlyIfConversion() const { return false; }
+
   /// \brief Reset the features for the subtarget.
   virtual void resetSubtargetFeatures(const MachineFunction *MF) { }
 };