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trans: Set COMDAT section for weak symbols so that Windows can handle them.

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This commit is contained in:
Michael Woerister 2016-06-09 13:39:21 -04:00
parent 4c27a3c6d5
commit b149b9d19b
2 changed files with 10 additions and 1 deletions
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1
src/librustc_trans/closure.rs
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@ -212,6 +212,7 @@ pub fn trans_closure_expr<'a, 'tcx>(dest: Dest<'a, 'tcx>,
let llfn = get_or_create_closure_declaration(ccx, closure_def_id, closure_substs);
llvm::SetLinkage(llfn, llvm::WeakODRLinkage);
llvm::SetUniqueComdat(ccx.llmod(), llfn);
// Get the type of this closure. Use the current `param_substs` as
// the closure substitutions. This makes sense because the closure

10
src/librustc_trans/trans_item.rs
View File

@ -190,9 +190,13 @@ impl<'a, 'tcx> TransItem<'tcx> {
}) => {
let lldecl = declare::declare_fn(ccx, symbol_name, mono_ty);
llvm::SetLinkage(lldecl, linkage);
attributes::from_fn_attrs(ccx, attrs, lldecl);
base::set_link_section(ccx, lldecl, attrs);
if linkage == llvm::LinkOnceODRLinkage ||
linkage == llvm::WeakODRLinkage {
llvm::SetUniqueComdat(ccx.llmod(), lldecl);
}
attributes::from_fn_attrs(ccx, attrs, lldecl);
ccx.instances().borrow_mut().insert(instance, lldecl);
}
_ => bug!("Invalid item for TransItem::Fn: `{:?}`", map_node)
@ -223,6 +227,10 @@ impl<'a, 'tcx> TransItem<'tcx> {
assert!(declare::get_defined_value(ccx, symbol_name).is_none());
let llfn = declare::declare_cfn(ccx, symbol_name, llfnty);
llvm::SetLinkage(llfn, linkage);
if linkage == llvm::LinkOnceODRLinkage ||
linkage == llvm::WeakODRLinkage {
llvm::SetUniqueComdat(ccx.llmod(), llfn);
}
attributes::set_frame_pointer_elimination(ccx, llfn);
ccx.drop_glues().borrow_mut().insert(dg, (llfn, fn_ty));
}