make sure barrier is not inside if

Author: vchuravy

src/macros.jl

@@ -98,12 +98,14 @@ function transform_gpu!(def, constargs, force_inbounds)
     # fix convergence
     active_stmts = Any[]
     for stmt in stmts
-        push!(active_stmts, stmt)
         has_sync = find_sync(stmt)
         if has_sync
             push!(new_stmts, Expr(:if, :__active_lane__, Expr(:block, active_stmts...)))
             empty!(active_stmts)
+            push!(new_stmts, stmt)
+            continue
         end
+        push!(active_stmts, stmt)
     end
     push!(new_stmts, Expr(:if, :__active_lane__, Expr(:block, active_stmts...)))
     if force_inbounds