master
 1export fn interrupt_param1(_: u32) callconv(.{ .x86_64_interrupt = .{} }) void {}
 2export fn interrupt_param2(_: *anyopaque, _: u32) callconv(.{ .x86_64_interrupt = .{} }) void {}
 3export fn interrupt_param3(_: *anyopaque, _: u64, _: u32) callconv(.{ .x86_64_interrupt = .{} }) void {}
 4export fn interrupt_ret(_: *anyopaque, _: u64) callconv(.{ .x86_64_interrupt = .{} }) u32 {
 5    return 0;
 6}
 7
 8export fn signal_param(_: u32) callconv(.avr_signal) void {}
 9export fn signal_ret() callconv(.avr_signal) noreturn {}
10
11// error
12// target=x86_64-linux
13//
14// :1:28: error: first parameter of function with 'x86_64_interrupt' calling convention must be a pointer type
15// :2:43: error: second parameter of function with 'x86_64_interrupt' calling convention must be a 64-bit integer
16// :3:51: error: 'x86_64_interrupt' calling convention supports up to 2 parameters, found 3
17// :4:87: error: function with calling convention 'x86_64_interrupt' must return 'void' or 'noreturn'
18// :8:24: error: parameters are not allowed with 'avr_signal' calling convention
19// :9:34: error: calling convention 'avr_signal' only available on architectures 'avr'