Adopt suggestions.

Author: AlexVlx

clang/lib/Sema/SemaExpr.cpp

@@ -6576,7 +6576,7 @@ ExprResult Sema::BuildCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc,
   // without any additional checking.
   if (Fn->getType() == Context.BuiltinFnTy && ArgExprs.size() == 1 &&
       ArgExprs[0]->getType() == Context.BuiltinFnTy) {
-    auto *FD = cast<FunctionDecl>(Fn->getReferencedDeclOfCallee());
+    const auto *FD = cast<FunctionDecl>(Fn->getReferencedDeclOfCallee());
 
     if (FD->getName() == "__builtin_amdgcn_is_invocable") {
       QualType FnPtrTy = Context.getPointerType(FD->getType());

clang/lib/Sema/SemaInit.cpp

@@ -9103,7 +9103,7 @@ bool InitializationSequence::Diagnose(Sema &S,
   case FK_ConversionFailed: {
     QualType FromType = OnlyArg->getType();
     // __amdgpu_feature_predicate_t can be explicitly cast to the logical op
-    // type, although this is almost always an error and we advise against it
+    // type, although this is almost always an error and we advise against it.
     if (FromType == S.Context.AMDGPUFeaturePredicateTy &&
         DestType == S.Context.getLogicalOperationType()) {
       S.Diag(OnlyArg->getExprLoc(),