Method reg_for_class

winch/codegen/src/codegen/context.rs:172–180

Request the register allocator to provide the next available register of the specified class.

(
        &mut self,
        class: RegClass,
        masm: &mut M,
    )

    /// Request the register allocator to provide the next available
    /// register of the specified class.
    pub fn reg_for_class<M: MacroAssembler>(
        &mut self,
        class: RegClass,
        masm: &mut M,
    ) -> Result<Reg> {
        self.regalloc.reg_for_class(class, &mut |regalloc| {
            Self::spill_impl(&mut self.stack, regalloc, &self.frame, masm)
        })
    }

    /// Convenience wrapper around `CodeGenContext::reg_for_class`, to
    /// request the next available general purpose register.