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Forgot to commit comdat.rs
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TheDan64 committed Oct 20, 2018
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//! A `Comdat` helps resolve linker errors for duplicate sections.
// https://llvm.org/doxygen/IR_2Comdat_8h_source.html
// https://stackoverflow.com/questions/1834597/what-is-the-comdat-section-used-for

use llvm_sys::comdat::{LLVMComdatSelectionKind, LLVMSetComdatSelectionKind, LLVMGetComdatSelectionKind};
use llvm_sys::prelude::LLVMComdatRef;

enum_rename!{
/// Determines how linker conflicts are to be resolved.
ComdatSelectionKind <=> LLVMComdatSelectionKind {
/// The linker may choose any COMDAT.
Any <=> LLVMAnyComdatSelectionKind,
/// The data referenced by the COMDAT must be the same.
ExactMatch <=> LLVMExactMatchComdatSelectionKind,
/// The linker will choose the largest COMDAT.
Largest <=> LLVMLargestComdatSelectionKind,
/// No other Module may specify this COMDAT.
NoDuplicates <=> LLVMNoDuplicatesComdatSelectionKind,
/// The data referenced by the COMDAT must be the same size.
SameSize <=> LLVMSameSizeComdatSelectionKind,
}
}

/// A `Comdat` determines how to resolve duplicate sections when linking.
#[derive(Debug, PartialEq, Copy, Clone)]
pub struct Comdat(pub(crate) LLVMComdatRef);

impl Comdat {
pub(crate) fn new(comdat: LLVMComdatRef) -> Self {
debug_assert!(!comdat.is_null());

Comdat(comdat)
}

/// Gets what kind of `Comdat` this is.
pub fn get_selection_kind(&self) -> ComdatSelectionKind {
let kind_ptr = unsafe {
LLVMGetComdatSelectionKind(self.0)
};

ComdatSelectionKind::new(kind_ptr)
}

/// Sets what kind of `Comdat` this should be.
pub fn set_selection_kind(&self, kind: ComdatSelectionKind) {
unsafe {
LLVMSetComdatSelectionKind(self.0, kind.as_llvm_enum())
}
}
}

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