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mark internal functions linker private (#381)

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Prevents unused functions in the emitted ELF object. Drive-by add a
missing test case (which misses a relocation under `-Oz` when all
internal functions are marked as private).

---------

Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>
This commit is contained in:
xermicus
2025-09-29 17:55:29 +02:00
committed by GitHub
parent 1cc4f967b4
commit 6858cb9a61
14 changed files with 111 additions and 65 deletions
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crates/llvm-context/src/polkavm/context/function/llvm_runtime.rs
+1 -12
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@@ -64,24 +64,13 @@ impl<'ctx> LLVMRuntime<'ctx> {
}
}
/// Declares an LLVM runtime function in the `module`,
pub fn declare(
module: &inkwell::module::Module<'ctx>,
name: &str,
r#type: inkwell::types::FunctionType<'ctx>,
linkage: Option<inkwell::module::Linkage>,
) -> FunctionDeclaration<'ctx> {
let value = module.add_function(name, r#type, linkage);
FunctionDeclaration::new(r#type, value)
}
/// Create the function definition from an existing symbol.
pub fn define(
module: &inkwell::module::Module<'ctx>,
name: &str,
) -> Option<FunctionDeclaration<'ctx>> {
let value = module.get_function(name)?;
value.set_linkage(inkwell::module::Linkage::External);
value.set_linkage(inkwell::module::Linkage::Private);
FunctionDeclaration::new(value.get_type(), value).into()
}
}