Ignore 'forced' tailcall opt in fastisel mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94617 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp
index cca98307c52c0e3891d9f6c1287416e80a9db69a..e3650af33bff8565c51ced7a3aa39c19316f28c1 100644 (file)
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/lib/Target/X86/X86FastISel.cpp
@@ -1243,11 +1243,6 @@ bool X86FastISel::X86SelectCall(Instruction *I) {
       CC != CallingConv::X86_FastCall)
     return false;
 
-  // fastcc with -tailcallopt is intended to provide a guaranteed
-  // tail call optimization. Fastisel doesn't know how to do that.
-  if (X86::IsEligibleForTailCallOpt(CC))
-    return false;
-
   // Let SDISel handle vararg functions.
   const PointerType *PT = cast<PointerType>(CS.getCalledValue()->getType());
   const FunctionType *FTy = cast<FunctionType>(PT->getElementType());