diff options
Diffstat (limited to 'llvm/lib/IR/Attributes.cpp')
| -rw-r--r-- | llvm/lib/IR/Attributes.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/IR/Attributes.cpp b/llvm/lib/IR/Attributes.cpp index 19b7c302723..a6d1c9035af 100644 --- a/llvm/lib/IR/Attributes.cpp +++ b/llvm/lib/IR/Attributes.cpp @@ -1006,6 +1006,10 @@ AttributeList AttributeList::get(LLVMContext &C, for (AttributeList List : Attrs) MaxSize = std::max(MaxSize, List.getNumAttrSets()); + // If every list was empty, there is no point in merging the lists. + if (MaxSize == 0) + return AttributeList(); + SmallVector<AttributeSet, 8> NewAttrSets(MaxSize); for (unsigned I = 0; I < MaxSize; ++I) { AttrBuilder CurBuilder; |
