667d114f47
When performing LTO, the rust compiler has an opportunity to completely strip all landing pads in all dependent libraries. I've modified the LTO pass to recognize the -Z no-landing-pads option when also running an LTO pass to flag everything in LLVM as nothrow. I've verified that this prevents any and all invoke instructions from being emitted. I believe that this is one of our best options for moving forward with accomodating use-cases where unwinding doesn't really make sense. This will allow libraries to be built with landing pads by default but allow usage of them in contexts where landing pads aren't necessary. cc #10780
This directory currently contains some LLVM support code. This will generally be sent upstream to LLVM in time; for now it lives here.