Allow some automatic tailcall optimization without changing ABI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94611 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index dddf385..55dc460 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -5122,9 +5122,7 @@
// Check if we can potentially perform a tail call. More detailed checking is
// be done within LowerCallTo, after more information about the call is known.
- bool isTailCall = PerformTailCallOpt && I.isTailCall();
-
- LowerCallTo(&I, Callee, isTailCall);
+ LowerCallTo(&I, Callee, I.isTailCall());
}
/// getCopyFromRegs - Emit a series of CopyFromReg nodes that copies from
@@ -6118,9 +6116,6 @@
SDValue Callee,
ArgListTy &Args, SelectionDAG &DAG, DebugLoc dl,
unsigned Order) {
- assert((!isTailCall || PerformTailCallOpt) &&
- "isTailCall set when tail-call optimizations are disabled!");
-
// Handle all of the outgoing arguments.
SmallVector<ISD::OutputArg, 32> Outs;
for (unsigned i = 0, e = Args.size(); i != e; ++i) {