commit 34ed2ea33c5cbd8799e8658080a0017fc702e538
author Pirama Arumuga Nainar <pirama@google.com> Wed Apr 25 22:58:40 2018 -0700
committer Pirama Arumuga Nainar <pirama@google.com> Thu Apr 26 16:10:40 2018 +0000
tree 0af008173436e2bc978cd0f00bc6da5129491875
parent 9ca0ad7a15a8b9868f22f67d13fe49a2d02601dc

Never enable LTO for libunwind_llvm

Bug: http://b/78476183

Symbols from libunwind_llvm are supposed to have hidden visibility and
enforced with '-Wl,--exclude-libs'.  With LTO, the archive with these
symbols may not match the file to --exclude-libs, thereby causing them
to be exported.

Test: Verify that libhwbinder.so with LTO has hidden visiblity for
_Unwind_VRS_Set

Change-Id: I84292e97d6af42448165f515f2e11c6bc2ee9f63
(cherry picked from commit 715c14fe7507ebd11b061cd3f0ac991c4710594e)