fixup! fixup! Make divzero a builtin instead of op

src/include/migraphx/module.hpp

@@ -184,7 +184,7 @@ struct module
 
     instruction_ref validate() const;
     instruction_ref find_dangling_reference() const;
-    instruction_ref flag_division_by_zero() const;
+    instruction_ref find_division_by_zero() const;
 
     void finalize(context& ctx);
 

src/module.cpp

@@ -639,13 +639,11 @@ instruction_ref module::find_dangling_reference() const
 
 bool is_div_zero(instruction ins) { return ins.name() == "@divzero"; }
 
-instruction_ref module::flag_division_by_zero() const
+instruction_ref module::find_division_by_zero() const
 {
-    auto divzero = std::count_if(begin(), end(), [](auto x) { return is_div_zero(x); });
-    if(divzero > 0)
-        return begin();
+    auto divzero = std::find_if(begin(), end(), [](auto x) { return is_div_zero(x); });
 
-    return end();
+    return divzero;
 }
 
 void module::finalize(context& ctx)

src/program.cpp

@@ -195,7 +195,7 @@ void program::compile(const target& t, compile_options options)
                            std::to_string(index));
         }
 
-        auto divide_by_zero = mod->flag_division_by_zero();
+        auto divide_by_zero = mod->find_division_by_zero();
         if(divide_by_zero != mod->end())
         {
             auto index = std::distance(mod->begin(), divide_by_zero);