Pass -lld-allow-duplicate-weak for coverage on Windows
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compnerd
reviewed
Jul 9, 2024
Profiling currently relies on the ability to emit duplicate weak symbols across translation units and having the linker coalesce them. Unfortunately `link.exe` does not support this, so require `lld-link` and pass `-lld-allow-duplicate-weak` when `-profile-generate` is passed. We ought to be able to remove this once coverage is changed to not rely on duplicate weak symbols, rdar://131295678 is tracking that. rdar://129337999
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@swift-ci please test |
compnerd
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Jul 9, 2024
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Profiling currently relies on the ability to emit duplicate weak symbols across translation units and having the linker coalesce them. Unfortunately
link.exedoes not support this, so requirelld-linkand pass-lld-allow-duplicate-weakwhen-profile-generateis passed. We ought to be able to remove this once coverage is changed to not rely on duplicate weak symbols, rdar://131295678 is tracking that.rdar://129337999