Function dce

crates/rustc_codegen_spirv/src/linker/dce.rs:14–18

(module: &mut Module)

use rustc_data_structures::fx::FxIndexSet;

pub fn dce(module: &mut Module) {
    let mut rooted = collect_roots(module);
    while spread_roots(module, &mut rooted) {}
    kill_unrooted(module, &rooted);
}

pub fn collect_roots(module: &Module) -> FxIndexSet<Word> {
    let mut rooted = FxIndexSet::default();