[SR-13604] Test suite failures on arm64 Ubuntu 20.04

[typesanitizer]

Previous ID	SR-13604
Radar	rdar://problem/69540517
Original Reporter	@typesanitizer
Type	Bug

Additional Detail from JIRA

| | | |------------------|-----------------| |Votes | 0 | |Component/s | | |Labels | Bug | |Assignee | None | |Priority | Medium | md5: 4e413727c8bf17f609c32c12e813555d

Sub-Tasks:

• SR-13600 [aarch64] [focal fossa] Failing test: Reflection/typeref_decoding_asan.swift
• SR-13599 [aarch64] [focal fossa] Failing test: stdlib/symbol-visibility-linux.test-sh
• SR-13598 [aarch64] [focal fossa] Failing test: compiler_scale/scale_neighbouring_getset.gyb
• SR-13597 [aarch64] [focal fossa] Failing test: IRGen/lto_autolink.swift

Issue Description:

Four test cases are failing when run on an AWS c6g instance running Ubuntu 20.04 (c6g uses the Arm-based Graviton2 processors).

[typesanitizer]

@swift-ci create