LLVM: Speculative Load Hardening (a Spectre variant #1 mitigation)

Finally posted my proposed design for Spectre variant #1 automatic and comprehensive mitigation:https://t.co/quj4aEAvcV

Twitter-summary? Not practical for performance sensitive applications (30% overhead) but in security sensitive contexts may be best option. Also, OMG hard….

— Chandler Carruth (@chandlerc1024) March 23, 2018