commit c75b449af658351186d2832909a8a28800600312
author Hans Wennborg <hans@hanshq.net> Wed Sep 19 09:58:30 2018 +0000
committer Hans Wennborg <hans@hanshq.net> Wed Sep 19 09:58:30 2018 +0000
tree 6efa6c2f34c6407a0da14492027ad6743c2b967d
parent 94083e0671517548a7c8bbb4812e73f9aec7a11d

[COFF] Emit @feat.00 on 64-bit and set the CFG bit when emitting guardcf tables

The 0x800 bit in @feat.00 needs to be set in order to make LLD pick up
the .gfid$y table. I believe this is fine to set even if we don't emit
the instrumentation.

We haven't emitted @feat.00 on 64-bit before. I see that MSVC does emit
it, but I'm not entirely sure what the default value should be. I went
with zero since that seems as safe as not emitting the symbol in the
first place.

Differential Revision: https://reviews.llvm.org/D52235

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@342532 91177308-0d34-0410-b5e6-96231b3b80d8