Optimize catch_unwind to match C++ try/catch#67502

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rust-lang:masterfrom

Mark-Simulacrum:opt-catch

Mar 14, 2020

Commits on Mar 2, 2020

Inline catching panics into std::catch_unwind

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Avoid over-aligning the return value in the -Cpanic=abort case

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Test catch_unwind vanishing
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Ignore PAL lint for std::panicking

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Amanieu
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Mark cleanup cold

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Fix some minor issues
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Ignore broken no-landing-pads test
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Apply review feedback
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Fix cross-DLL panics under MSVC
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Apply CPU attributes to __rust_try
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Commits on Mar 7, 2020

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