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Commit 3a8ad7e2 authored by Evgeniy Stepanov's avatar Evgeniy Stepanov
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Cross-DSO control flow integrity (Clang part). 

Clang-side cross-DSO CFI.

* Adds a command line flag -f[no-]sanitize-cfi-cross-dso.
* Links a runtime library when enabled.
* Emits __cfi_slowpath calls is bitset test fails.
* Emits extra hash-based bitsets for external CFI checks.
* Sets a module flag to enable __cfi_check generation during LTO.

This mode does not yet support diagnostics.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@255694 91177308-0d34-0410-b5e6-96231b3b80d8
parent 86fda4a2
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