commit 87116c1f6d06fd01189dc64dad33b36c180ecd40
author Dan Albert <danalbert@google.com> Fri Feb 27 22:21:07 2015 +0000
committer Dan Albert <danalbert@google.com> Fri Feb 27 22:21:07 2015 +0000
tree 14445614f6ac0b7a6a76a87c2365cb6389c3c30c
parent 60df04075a29eaa87521a6dad819a013f6345bad

Add .eh_frame_hdr search to Linux unwinder.

This improves the performance of unwinding on DWARF based targets. The
32-bit x86 support for scanning the full eh_frame
(CFI_Parser::findFDE) apparently does not work (at least not on
Linux). Since the eh_frame_hdr code delegates to that, this still
doesn't work for x86 Linux, but it has been tested on x86_64 Linux and
aarch64 Android.

git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@230802 91177308-0d34-0410-b5e6-96231b3b80d8