Rename the PerformTailCallOpt variable to GuaranteedTailCallOpt to reflect
its current purpose.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95564 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp
index d466ce0..392b96d 100644
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/lib/Target/X86/X86FastISel.cpp
@@ -1247,7 +1247,7 @@
 
   // fastcc with -tailcallopt is intended to provide a guaranteed
   // tail call optimization. Fastisel doesn't know how to do that.
-  if (CC == CallingConv::Fast && PerformTailCallOpt)
+  if (CC == CallingConv::Fast && GuaranteedTailCallOpt)
     return false;
 
   // Let SDISel handle vararg functions.