diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 91dc7b51d8..858ebc5de5 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -1732,7 +1732,7 @@ static bool IsTailCallConvention(CallingConv::ID CC) { } bool X86TargetLowering::mayBeEmittedAsTailCall(CallInst *CI) const { - if (!CI->isTailCall()) + if (!CI->isTailCall() || getTargetMachine().Options.DisableTailCalls) return false; CallSite CS(CI); @@ -2133,6 +2133,9 @@ X86TargetLowering::LowerCall(SDValue Chain, SDValue Callee, bool IsStructRet = CallIsStructReturn(Outs); bool IsSibcall = false; + if (MF.getTarget().Options.DisableTailCalls) + isTailCall = false; + if (isTailCall) { // Check if it's really possible to do a tail call. isTailCall = IsEligibleForTailCallOptimization(Callee, CallConv, |