tree cb46198c23fa0cdad2404ce6f0e0ab0edeb3546f
parent 1a5348017b20f133eb5fc23b4cba39336b553de1
author Zola Bridges <zbrid@google.com> 1543348606 +0000
committer Zola Bridges <zbrid@google.com> 1543348606 +0000

[clang][slh] add attribute for speculative load hardening

Summary:
Resubmit this with no changes because I think the build was broken
by a different diff.
-----
The prior diff had to be reverted because there were two tests
that failed. I updated the two tests in this diff

clang/test/Misc/pragma-attribute-supported-attributes-list.test
clang/test/SemaCXX/attr-speculative-load-hardening.cpp

----- Summary from Previous Diff (Still Accurate) -----

LLVM IR already has an attribute for speculative_load_hardening. Before
this commit, when a user passed the -mspeculative-load-hardening flag to
Clang, every function would have this attribute added to it. This Clang
attribute will allow users to opt into SLH on a function by function basis.

This can be applied to functions and Objective C methods.

Reviewers: chandlerc, echristo, kristof.beyls, aaron.ballman

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D54915

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@347701 91177308-0d34-0410-b5e6-96231b3b80d8