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Use existing declaration of rust_eh_personality

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If crate declares `rust_eh_personality`, re-use existing declaration
as otherwise attempts to set function attributes that follow the
declaration will fail (unless it happens to have exactly the same
type signature as the one predefined in the compiler).
This commit is contained in:
Tomasz Miąsko
2021-07-07 00:00:00 +00:00
parent ae33a9714e
commit f612ba1f84
2 changed files with 32 additions and 3 deletions
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11
compiler/rustc_codegen_llvm/src/context.rs
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@@ -385,11 +385,16 @@ impl MiscMethods<'tcx> for CodegenCx<'ll, 'tcx> {
} else {
"rust_eh_personality"
};
let fty = self.type_variadic_func(&[], self.type_i32());
self.declare_cfn(name, llvm::UnnamedAddr::Global, fty)
if let Some(llfn) = self.get_declared_value(name) {
llfn
} else {
let fty = self.type_variadic_func(&[], self.type_i32());
let llfn = self.declare_cfn(name, llvm::UnnamedAddr::Global, fty);
attributes::apply_target_cpu_attr(self, llfn);
llfn
}
}
};
attributes::apply_target_cpu_attr(self, llfn);
self.eh_personality.set(Some(llfn));
llfn
}