From e8e8bfeeb7233bde17d0a811b87d392271b33f42 Mon Sep 17 00:00:00 2001
From: Nikita Popov <npopov@redhat.com>
Date: Wed, 22 Dec 2021 09:42:55 +0100
Subject: [PATCH] [DataFlowSanitizer] Simplify attribute removal (NFC)

We're only removing a single attribute, so there is no need to
go through AttrBuilder.
---
 llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
index 9eedd9f..9f26b37 100644
--- a/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
@@ -1121,7 +1121,7 @@ DataFlowSanitizer::buildWrapperFunction(Function *F, StringRef NewFName,
 
   BasicBlock *BB = BasicBlock::Create(*Ctx, "entry", NewF);
   if (F->isVarArg()) {
-    NewF->removeFnAttrs(AttrBuilder().addAttribute("split-stack"));
+    NewF->removeFnAttr("split-stack");
     CallInst::Create(DFSanVarargWrapperFn,
                      IRBuilder<>(BB).CreateGlobalStringPtr(F->getName()), "",
                      BB);
-- 
2.7.4