Author: Bill Wendling Date: 2022-02-15T00:06:58-08:00 New Revision: 86bde99a9027f875383e38bfd3a863abae3d0e75
URL: https://github.com/llvm/llvm-project/commit/86bde99a9027f875383e38bfd3a863abae3d0e75 DIFF: https://github.com/llvm/llvm-project/commit/86bde99a9027f875383e38bfd3a863abae3d0e75.diff LOG: Insert a blurb about the -fzero-call-used-regs feature Reviewed By: nickdesaulniers Differential Revision: https://reviews.llvm.org/D119592 Added: Modified: clang/docs/ReleaseNotes.rst Removed: ################################################################################ diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst index d6115e0e4a51c..43a2cf98e7c8b 100644 --- a/clang/docs/ReleaseNotes.rst +++ b/clang/docs/ReleaseNotes.rst @@ -47,7 +47,12 @@ sections with improvements to Clang's support for those languages. Major New Features ------------------ -- ... +- Clang now supports the ``-fzero-call-used-regs`` feature for x86. The purpose + of this feature is to limit Return-Oriented Programming (ROP) exploits and + information leakage. It works by zeroing out a selected class of registers + before function return --- e.g., all GPRs that are used within the function. + There is an analogous ``zero_call_used_regs`` attribute to allow for finer + control of this feature. Improvements to Clang's diagnostics ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
