Richard Smith da3729d1e6 Do not use optimized atomic libcalls for misaligned atomics. ...

Summary:
The optimized (__atomic_foo_<n>) libcalls assume that the atomic object
is properly aligned, so should never be called on an underaligned
object.

This addresses one of several problems identified in PR38846.

Reviewers: jyknight, t.p.northover

Subscribers: jfb, cfe-commits

Differential Revision: https://reviews.llvm.org/D51817

llvm-svn: 341734

2018-09-07 23:57:54 +00:00

83 KiB

Raw Blame History

View Raw