Method register_constant

cranelift/codegen/src/machinst/buffer.rs:670–677

Similar to [`MachBuffer::register_constants`] but registers a single constant metadata. This function is useful in situations where not all constants are known at the time of emission.

(&mut self, constant: &VCodeConstant, data: &VCodeConstantData)

    /// situations where not all constants are known at the time of
    /// emission.
    pub fn register_constant(&mut self, constant: &VCodeConstant, data: &VCodeConstantData) {
        let c2 = self.constants.push(MachBufferConstant {
            upcoming_label: None,
            align: data.alignment(),
            size: data.as_slice().len(),
        });
        assert_eq!(*constant, c2);
    }

    /// Completes constant emission by iterating over `self.used_constants` and
    /// filling in the "holes" with the constant values provided by `constants`.