From 3dc972aadbe44938137adb767452c35e2fc24206 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault@amd.com>
Date: Mon, 13 Oct 2025 02:52:52 +0900
Subject: [PATCH] TableGen: Account for Unsupporte LibcallImpl in bitset size

The Unsupported case is special and doesn't have an entry in the
vector, and is directly emitted as the 0 case. This should be
harmless as it is, but could break if the right number of new
libcalls is added.
---
 llvm/utils/TableGen/Basic/RuntimeLibcallsEmitter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/utils/TableGen/Basic/RuntimeLibcallsEmitter.cpp b/llvm/utils/TableGen/Basic/RuntimeLibcallsEmitter.cpp
index fd8ddb1056ac3..3938d3910f62a 100644
--- a/llvm/utils/TableGen/Basic/RuntimeLibcallsEmitter.cpp
+++ b/llvm/utils/TableGen/Basic/RuntimeLibcallsEmitter.cpp
@@ -592,7 +592,7 @@ void RuntimeLibcallEmitter::emitSystemRuntimeLibrarySetCalls(
     DenseMap<PredicateWithCC, LibcallsWithCC> Pred2Funcs;
 
     SmallVector<uint64_t, 32> BitsetValues(
-        divideCeil(RuntimeLibcallImplDefList.size(), BitsPerStorageElt));
+        divideCeil(RuntimeLibcallImplDefList.size() + 1, BitsPerStorageElt));
 
     for (const Record *Elt : *Elements) {
       const RuntimeLibcallImpl *LibCallImpl = getRuntimeLibcallImpl(Elt);