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As of commit99978ab with merge basedccd19c ():

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LGTM. If it's desired, I'd suggest creating a GitHub issue to solve the root cause - removal of AVX512 intrinsic from code targeting AVX2 - and linking it to this PR.

Upgrade VS2022 to latest can fix this issue, but I don't known how, please check here:#145702 (comment)@Blackhex can you check with Visual studio team to seek a solution?

@pytorchbot rebase

@pytorchbot started a rebase job ontorefs/remotes/origin/viable/strict. Check the current statushere

Successfully rebasedxu_fix_vs2022_illegal_instruction ontorefs/remotes/origin/viable/strict, please pull locally before adding more changes (for example, viagit checkout xu_fix_vs2022_illegal_instruction && git pull --rebase)

Upgrade VS2022 to latest can fix this issue, but I don't known how, please check here:#145702 (comment)@Blackhex can you check with Visual studio team to seek a solution?

IMO, thehttps://github.com/pytorch/pytorch/blob/56e7d38b9f9ee727caf7b86aa0cca5088c94a489/.ci/pytorch/windows/internal/vc_install_helper.bat script is not used for PR builds that are done withhttps://github.com/pytorch/pytorch/blob/56e7d38b9f9ee727caf7b86aa0cca5088c94a489/.ci/pytorch/win-test-helpers/build_pytorch.bat script which probably assumes the build tools already installed on the image. If that's true, it should be updated on AMI image or installation added (https://github.com/Blackhex/pytorch-test-infra/blob/main/aws/ami/windows/scripts/Installers/Install-VS.ps1). The installation script should be used for nightly wheels builds. Can you confirm or decline whether the update of build tools work there?

PS: I am discussing with VS team what is the reason that the issue is not happening with newer build tools. I will need a small C++ repro case for that which will take some time to dissect from the codebase, unless someone already did that?

@pytorchbot rebase

@pytorchbot started a rebase job ontorefs/remotes/origin/viable/strict. Check the current statushere

Successfully rebasedxu_fix_vs2022_illegal_instruction ontorefs/remotes/origin/viable/strict, please pull locally before adding more changes (for example, viagit checkout xu_fix_vs2022_illegal_instruction && git pull --rebase)

@pytorchbot rebase

@pytorchbot started a rebase job ontorefs/remotes/origin/viable/strict. Check the current statushere

Double confirmed the latest changes.

@pytorchbot merge

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Merge failed

Reason: 1 jobs have failed, first few of them are:xpu / linux-jammy-xpu-2025.1-py3.9 / test (default, 6, 6, linux.idc.xpu)

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Merge failed

Reason: 1 jobs have failed, first few of them are:xpu / linux-jammy-xpu-2025.1-py3.9 / test (default, 6, 6, linux.idc.xpu)

@pytorchbot merge -i

Merge started

Your change will be merged while ignoring the following 2 checks:pull / cuda12.4-py3.10-gcc9-sm75 / test (pr_time_benchmarks, 1, 1, linux.g4dn.metal.nvidia.gpu),xpu / linux-jammy-xpu-2025.1-py3.9 / test (default, 6, 6, linux.idc.xpu)

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I couldn't find any documentation for d2implyavx512upperregs....

Yeah, this flag is undocumented. I found out this is a solution to the problem from public (and internal) discussions likehttps://developercommunity.visualstudio.com/t/Code-gen-bug-uses-ymm16-register-for-AVX/10564317