Revert r127953, "SimplifyCFG has stopped duplicating returns into predecessors

to canonicalize IR", it broke a lot of things.

llvm-svn: 127954

1 files changed, 0 insertions, 8 deletions

diff --git a/llvm/include/llvm/Target/TargetLowering.h b/llvm/include/llvm/Target/TargetLowering.h
index 6b3c45adc59..5b3f2b35bf8 100644
--- a/llvm/include/llvm/Target/TargetLowering.h
+++ b/llvm/include/llvm/Target/TargetLowering.h
@@ -1287,14 +1287,6 @@ public:
     return false;
   }
 
-  /// mayBeEmittedAsTailCall - Return true if the target may be able emit the
-  /// call instruction as a tail call. This is used by optimization passes to
-  /// determine if it's profitable to duplicate return instructions to enable
-  /// tailcall optimization.
-  virtual bool mayBeEmittedAsTailCall(CallInst *CI) const {
-    return false;
-  }
-
   /// getTypeForExtArgOrReturn - Return the type that should be used to zero or
   /// sign extend a zeroext/signext integer argument or return value.
   /// FIXME: Most C calling convention requires the return type to be promoted,