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mir-opt tests generate an excessive amount of output #109502

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mir-opt tests generate an excessive amount of output#109502
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mj10021
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A-contributor-roadblockArea: Makes things more difficult for new or seasoned contributors to RustA-mir-optArea: MIR optimizationsA-testsuiteArea: The testsuite used to check the correctness of rustcE-help-wantedCall for participation: Help is requested to fix this issue.E-mediumCall for participation: Medium difficulty. Experience needed to fix: Intermediate.E-mentorCall for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
@scottmcm

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@scottmcm
scottmcm
opened on Mar 22, 2023

There are 237 mir-opt tests right now.

Running them on my machine produces over 69 thousand files, using over 400 MB of disk (⅓ of which is filesystem overhead):
image

Could that be cut back somewhat? Windows is not a fan of lots of files -- even just deleting all those files takes over 13 seconds, despite being on a fast M2 PCI-e SSD.

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A-contributor-roadblockArea: Makes things more difficult for new or seasoned contributors to RustA-mir-optArea: MIR optimizationsA-testsuiteArea: The testsuite used to check the correctness of rustcE-help-wantedCall for participation: Help is requested to fix this issue.E-mediumCall for participation: Medium difficulty. Experience needed to fix: Intermediate.E-mentorCall for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

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