Method call_signature

cranelift/codegen/src/ir/dfg.rs:1107–1114

Get the call signature of a direct or indirect call instruction. Returns `None` if `inst` is not a call instruction.

(&self, inst: Inst)

    /// Get the call signature of a direct or indirect call instruction.
    /// Returns `None` if `inst` is not a call instruction.
    pub fn call_signature(&self, inst: Inst) -> Option<SigRef> {
        match self.insts[inst].analyze_call(&self.value_lists, &self.exception_tables) {
            CallInfo::NotACall => None,
            CallInfo::Direct(f, _) => Some(self.ext_funcs[f].signature),
            CallInfo::DirectWithSig(_, s, _) => Some(s),
            CallInfo::Indirect(s, _) => Some(s),
        }
    }

    /// Like `call_signature` but returns none for tail call
    /// instructions and try-call (exception-handling invoke)