Move isInTailCallPosition out of SelectionDAGBuilder, as it isn't
SelectionDAG-specific.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101801 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.h b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.h
index 34c8da6..0d9af1a 100644
--- a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.h
+++ b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.h
@@ -24,6 +24,7 @@
#endif
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGen/ISDOpcodes.h"
+#include "llvm/Support/CallSite.h"
#include <vector>
namespace llvm {
@@ -166,6 +167,15 @@
///
ISD::CondCode getICmpCondCode(ICmpInst::Predicate Pred);
+/// Test if the given instruction is in a position to be optimized
+/// with a tail-call. This roughly means that it's in a block with
+/// a return and there's nothing that needs to be scheduled
+/// between it and the return.
+///
+/// This function only tests target-independent requirements.
+bool isInTailCallPosition(ImmutableCallSite CS, Attributes CalleeRetAttr,
+ const TargetLowering &TLI);
+
} // end namespace llvm
#endif