Remove last para. Un-auto a variable.

Author: trenouf

llvm/docs/LangRef.rst

@@ -2088,10 +2088,6 @@ example:
     divergence even if its inputs are uniform. A call with no further information
     would normally be considered a source of divergence; setting this attribute
     on a function means that a call to it is not a source of divergence.
-
-    This is useful where known-name calls are being used as an extension
-    mechanism for instructions, as for example in `llvm-dialects
-    <https://github.com/GPUOpen-Drivers/llvm-dialects>`.
 ``noduplicate``
     This attribute indicates that calls to the function cannot be
     duplicated. A call to a ``noduplicate`` function may be moved

llvm/lib/Analysis/TargetTransformInfo.cpp

@@ -288,7 +288,7 @@ bool TargetTransformInfo::hasBranchDivergence(const Function *F) const {
 }
 
 bool TargetTransformInfo::isSourceOfDivergence(const Value *V) const {
-  if (auto Call = dyn_cast<CallBase>(V)) {
+  if (const CallBase *Call = dyn_cast<CallBase>(V)) {
     if (Call->hasFnAttr(Attribute::NoDivergenceSource))
       return false;
   }