tree 76bd681b899b82c9b27d09123a524f9466b91834
parent 29dd71509627d77d3fe1cedfe3ee2fe6f24c9fd5
author Than McIntosh <thanm@google.com> 1567694057 -0400
committer Than McIntosh <thanm@google.com> 1567791878 +0000

gollvm: better handling for statically unreachable code

Fix a couple of issues in the control-flow materialization phase in
the bridge that have to do with statically unreachable code (we can
get asserts and IR-verification failures for functions of the form

   func X() {
     if false {
       return
     }
     ... complex control flow ...
   }

Change-Id: Icce7086d72b93683efc69419eafa758b1cec0199
Reviewed-on: https://go-review.googlesource.com/c/gollvm/+/193478
Reviewed-by: Cherry Zhang <cherryyz@google.com>