Method analyze_call

cranelift/codegen/src/ir/instructions.rs:589–631

Return information about a call instruction. Any instruction that can call another function reveals its call signature here.

(
        &'a self,
        pool: &'a ValueListPool,
        exception_tables: &ExceptionTables,
    )

    ///
    /// Any instruction that can call another function reveals its call signature here.
    pub fn analyze_call<'a>(
        &'a self,
        pool: &'a ValueListPool,
        exception_tables: &ExceptionTables,
    ) -> CallInfo<'a> {
        match *self {
            Self::Call {
                func_ref, ref args, ..
            } => CallInfo::Direct(func_ref, args.as_slice(pool)),
            Self::CallIndirect {
                sig_ref, ref args, ..
            } => CallInfo::Indirect(sig_ref, &args.as_slice(pool)[1..]),
            Self::TryCall {
                func_ref,
                ref args,
                exception,
                ..
            } => {
                let exdata = &exception_tables[exception];
                CallInfo::DirectWithSig(func_ref, exdata.signature(), args.as_slice(pool))
            }
            Self::TryCallIndirect {
                exception,
                ref args,
                ..
            } => {
                let exdata = &exception_tables[exception];
                CallInfo::Indirect(exdata.signature(), &args.as_slice(pool)[1..])
            }
            Self::Ternary {
                opcode: Opcode::StackSwitch,
                ..
            } => {
                // `StackSwitch` is not actually a call, but has the .call() side
                // effect as it continues execution elsewhere.
                CallInfo::NotACall
            }
            _ => {
                debug_assert!(!self.opcode().is_call());
                CallInfo::NotACall
            }
        }
    }

    #[inline]
    pub(crate) fn mask_immediates(&mut self, ctrl_typevar: Type) {