[SR-15323] Illegal instruction in Foundation.NSCalendar on Linux

[swift-ci]

Previous ID	SR-15323
Radar	None
Original Reporter	Gerzer (JIRA User)
Type	Bug

Environment

Ubuntu 18.04.6 LTS (GNU/Linux 4.15.0-76-generic x86_64)

Swift version 5.5 (swift-5.5-RELEASE)

Additional Detail from JIRA

Votes	0
Component/s	Compiler, Foundation
Labels	Bug
Assignee	None
Priority	Medium

md5: b1a12baae938ed05fc35f952d29c79a7

Issue Description:

I'm consistently encountering an "illegal instruction operand" runtime crash when running my Swift project on Linux:

* thread #​1, name = 'Runner', stop reason = signal SIGILL: illegal instruction operand

{{ frame #0: 0x00007ffff6f608cf libFoundation.so`function signature specialization <Arg[4] = Dead> of Foundation.NSCalendar.(_convert in A964CA9D661260BE41808499AF1D27AB)(: Swift.Optional<Swift.Int>, type: Swift.String, vector: inout Swift.Array<Swift.Int32>, compDesc: inout Swift.Array<Swift.Int8>) -> () + 47}}

libFoundation.so`function signature specialization <Arg[4] = Dead> of Foundation.NSCalendar.(_convert in A964CA9D661260BE41808499AF1D27AB)(: Swift.Optional<Swift.Int>, type: Swift.String, vector: inout Swift.Array<Swift.Int32>, compDesc: inout Swift.Array<Swift.Int8>) -> ():

-> 0x7ffff6f608cf <+47>: ud2

{{ 0x7ffff6f608d1 <+49>: cmpq $-0x80000000, %rbx ; imm = 0x80000000 }}

{{ 0x7ffff6f608d8 <+56>: jl 0x7ffff6f609ce ; <+302>}}

{{ 0x7ffff6f608de <+62>: movq %rdx, -0x30(%rbp)}}

{{ thread #68, name = 'Runner', stop reason = shared-library-event}}

{{ frame #0: 0x00007ffff7fe48f0 ld-2.28.so`_GI_dl_debug_state at dl-debug.c:74:1}}

Target 0: (Runner) stopped.

You can reproduce this by building and running the project on Linux.

[parkera]

This code has all been rewritten as of #5001