[llvm] 15dc2d5 - [IR] Prevent implicit SymbolTableListTraits template instantiation (#111600)
via llvm-commits
llvm-commits at lists.llvm.org
Wed Oct 9 06:11:59 PDT 2024
Author: Victor Mustya
Date: 2024-10-09T06:11:55-07:00
New Revision: 15dc2d5c5e55e6f0b9e3a78d352698b8873f2566
URL: https://github.com/llvm/llvm-project/commit/15dc2d5c5e55e6f0b9e3a78d352698b8873f2566
DIFF: https://github.com/llvm/llvm-project/commit/15dc2d5c5e55e6f0b9e3a78d352698b8873f2566.diff
LOG: [IR] Prevent implicit SymbolTableListTraits template instantiation (#111600)
The `SymbolTableListTraits` template is explicitly instantiated for the
following types:
* `llvm/lib/IR/Function.cpp`
- `BasicBlock`
* `llvm/lib/IR/Module.cpp`
- `Function`
- `GlobalAlias`
- `GlobalIFunc`
- `GlobalVariable`
When LLVM is built on Windows with the `LLVM_EXPORT_SYMBOLS_FOR_PLUGINS`
option enabled, the implicit instantiation of the template prevents the
`SymbolTableListTraits` template from being exported. This causes link
errors when the template or IR API is used in a plugin.
This change prevents the template being implicitly instantiated for
these types.
Added:
Modified:
llvm/include/llvm/IR/SymbolTableListTraits.h
Removed:
################################################################################
diff --git a/llvm/include/llvm/IR/SymbolTableListTraits.h b/llvm/include/llvm/IR/SymbolTableListTraits.h
index bd31fca5e525b6..fcf6f0fb152804 100644
--- a/llvm/include/llvm/IR/SymbolTableListTraits.h
+++ b/llvm/include/llvm/IR/SymbolTableListTraits.h
@@ -106,6 +106,15 @@ class SymbolTableListTraits : public ilist_alloc_traits<ValueSubClass> {
static ValueSymbolTable *toPtr(ValueSymbolTable &R) { return &R; }
};
+// The SymbolTableListTraits template is explicitly instantiated for the
+// following data types, so add extern template statements to prevent implicit
+// instantiation.
+extern template class SymbolTableListTraits<BasicBlock>;
+extern template class SymbolTableListTraits<Function>;
+extern template class SymbolTableListTraits<GlobalAlias>;
+extern template class SymbolTableListTraits<GlobalIFunc>;
+extern template class SymbolTableListTraits<GlobalVariable>;
+
/// List that automatically updates parent links and symbol tables.
///
/// When nodes are inserted into and removed from this list, the associated
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