SIGILL: illegal instruction on any go tool under macOS [1.14 backport]

[gopherbot]

@dmitshur requested issue #37459 to be considered for backport to the next 1.14 minor release.

@gopherbot Please open a backport for 1.14. This is a regression in 1.14, and it is a serious problem (program doesn't run on affected hardware) without a workaround.

[gopherbot]

Change https://golang.org/cl/221058 mentions this issue: [release-branch.go1.14] runtime: guard VZEROUPPER on CPU feature

[UrbanLegend]

It also affects 10.13.6 (High Sierra)

[randall77]

@UrbanLegend I think you might be confusing macOS versions with Go versions.
This issue should not depend on the macOS version at all. It just requires Go 1.14 and an old processor.

[dmitshur]

Approving per discussion in a release meeting because this is a serious issue without a workaround.

/cc @cagedmantis @toothrot

[Jonconradt]

My configuration is having this problem. Here is the hardware and OS information:

System Version: macOS 10.14.6 (18G3020)
Kernel Version: Darwin 18.7.0
Model Name: Mac Pro
Model Identifier: MacPro5,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 2.26 GHz
Number of Processors: 2
Total Number of Cores: 8
L2 Cache (per Core): 256 KB
L3 Cache (per Processor): 8 MB
Hyper-Threading Technology: Enabled
Memory: 64 GB
Boot ROM Version: 144.0.0.0.0

Chirping in with essentially the same config as @Jonconradt, except my Boot ROM is 138.0.0.0.0.

[cagedmantis]

@cherrymui This issue has been approved. Feel free to merge when you have the opportunity.

[cherrymui]

@cagedmantis I don't think I have permission to submit to the release branch. I'll have to let you or the release team do that. Thanks.

[cagedmantis]

@cherrymui Sorry for the confusion.