Remove switch for disabling ARM tail calls. They

seem to be working correctly.  No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110226 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 92fb442ac75e6e8477206d2fef13bfbe019c17a2..db550b1c4290a6a0b62da9887a03c3def57d32c9 100644 (file)
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -51,12 +51,6 @@ using namespace llvm;
 
 STATISTIC(NumTailCalls, "Number of tail calls");
 
-// This option should go away when tail calls fully work.
-static cl::opt<bool>
-EnableARMTailCalls("arm-tail-calls", cl::Hidden,
-  cl::desc("Generate tail calls (TEMPORARY OPTION)."),
-  cl::init(true));
-
 // This option should go away when Machine LICM is smart enough to hoist a 
 // reg-to-reg VDUP.
 static cl::opt<bool>
@@ -1123,9 +1117,6 @@ ARMTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
   MachineFunction &MF = DAG.getMachineFunction();
   bool IsStructRet    = (Outs.empty()) ? false : Outs[0].Flags.isSRet();
   bool IsSibCall = false;
-  // Temporarily disable tail calls so things don't break.
-  if (!EnableARMTailCalls)
-    isTailCall = false;
   if (isTailCall) {
     // Check if it's really possible to do a tail call.
     isTailCall = IsEligibleForTailCallOptimization(Callee, CallConv,