Discuss about the LLVM SW mitigation to Jump Conditional Code Erratum

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Hi all,

I’d like to discuss about the LLVM SW mitigation to Jump Conditional Code Erratum in this mailing thread. The patch was submitted in phabricator https://reviews.llvm.org/D70157. There were many review comments about its performance/code size impact, and some suggestions how to make the patches more generic to apply to other scenarios.

Let’s start from the performance/code size/build time impact. Below is the data we got from the test suite.