[dropping llvm-commits, since this is a patch to clang] Ping
On Thu, Nov 13, 2014 at 10:00 AM, Tom Roeder <[email protected]> wrote: > Pinging this clang patch now that FCFI is in LLVM. As a reminder, this > patch sets jumptable on all functions and turns on FCFI on LLVM through > -plugin-opt on gold or in llvm::TargetOptions. > > On Mon, Jul 7, 2014 at 4:50 PM, Tom Roeder <[email protected]> wrote: > >> On Sat, Jul 5, 2014 at 7:39 PM, Nick Lewycky <[email protected]> wrote: >> > +cc Kostya. >> > >> > Kostya, I'm wondering whether I could interest you or anyone on your >> team in >> > looking at http://reviews.llvm.org/D4167 . It's an IR transforming >> runtime >> > instrumentation with a lot in common with the asan/tsan/msan passes, >> except >> > that it has a different goal (security guarantees instead of bug >> finding) >> > and that it runs as part of llc due to its integration with the jump >> tables. >> > I think the sanitizers are the closest thing to this in llvm and it >> would be >> > nice to get a review from the sanitizer developers. >> > >> > >> > Tom Roeder wrote: >> >> >> >> This patch adds a clang flag -ffcfi that enables forward-edge >> >> control-flow integrity. It depends on the (not yet reviewed) FCFI >> >> patch at http://reviews.llvm.org/D4167. >> >> >> >> Specifically, it sets FCFI in llvm::TargetOptions when called LLVM >> >> directly, and it passes the LLVM flag -fcfi through LTO to LLVM when >> >> using gold. >> > >> > >> > There is not yet a -fcfi flag on the gold plugin. Is that out for review >> > already? I looked but I may have missed it. >> >> That's part of D4167 as of DIff 10978 on June 30th. It's in >> include/llvm/CodeGen/CommandFlags.h >> >> Thanks, >> >> Tom >> > >
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