Method zombie_with_span

crates/rustc_codegen_spirv/src/codegen_cx/mod.rs:177–189

Zombie system: If something unrepresentable is encountered, we don't want to fail the compilation. Instead, we emit something bogus (usually it's fairly faithful, though, e.g. `u128` emits `OpTypeInt 128 0`), and then mark the resulting ID as a "zombie". We continue compiling the rest of the crate, then, at the very end, anything that transitively references a zombie value is stripped from the bi

(&self, word: Word, span: Span, reason: &str)

    ///
    /// Errors will only be emitted (by `linker::zombies`) for reachable zombies.
    pub fn zombie_with_span(&self, word: Word, span: Span, reason: &str) {
        self.zombie_decorations.borrow_mut().insert(
            word,
            (
                ZombieDecoration {
                    // FIXME(eddyb) this could take advantage of `Cow` and use
                    // either `&'static str` or `String`, on a case-by-case basis.
                    reason: reason.to_string().into(),
                },
                SrcLocDecoration::from_rustc_span(span, &self.builder),
            ),
        );
    }
    pub fn zombie_no_span(&self, word: Word, reason: &str) {
        self.zombie_with_span(word, DUMMY_SP, reason);
    }