<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Tue, Jan 19, 2016 at 2:09 PM, Ed Maste via llvm-dev <span dir="ltr"><<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Is it reasonable to change LLVM libunwind to use an approach similar<br>
to GCC's unwinder, and have a target-specific maximum DWARF register<br>
number? X86 does have DWARF register numbers above the 18 that GCC<br>
accommodates, but they're not going to be useful in the unwinder<br>
anyhow.<br></blockquote><div><br></div><div>This sounds pretty reasonable. Expecting EH to work on a 4K stack seems silly, but exceptions can be thrown from deep in a call tree and I think it makes sense to keep stack usage down. </div></div></div></div>