#include "llvm/CodeGen/Analysis.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/SelectionDAG.h"
-#include "llvm/DataLayout.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Function.h"
-#include "llvm/Instructions.h"
-#include "llvm/IntrinsicInst.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/IntrinsicInst.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetLowering.h"
return true;
}
-
-bool llvm::isInTailCallPosition(SelectionDAG &DAG, SDNode *Node,
- SDValue &Chain, const TargetLowering &TLI) {
- const Function *F = DAG.getMachineFunction().getFunction();
-
- // Conservatively require the attributes of the call to match those of
- // the return. Ignore noalias because it doesn't affect the call sequence.
- Attribute CallerRetAttr = F->getAttributes().getRetAttributes();
- if (AttrBuilder(CallerRetAttr)
- .removeAttribute(Attribute::NoAlias).hasAttributes())
- return false;
-
- // It's not safe to eliminate the sign / zero extension of the return value.
- if (CallerRetAttr.hasAttribute(Attribute::ZExt) ||
- CallerRetAttr.hasAttribute(Attribute::SExt))
- return false;
-
- // Check if the only use is a function return node.
- return TLI.isUsedByReturnOnly(Node, Chain);
-}