Make sure that all globals are internal, except for "start" functions.

tests_lit/llvm2ice_tests/reorder-functions.ll

Index: tests_lit/llvm2ice_tests/reorder-functions.ll
diff --git a/tests_lit/llvm2ice_tests/reorder-functions.ll b/tests_lit/llvm2ice_tests/reorder-functions.ll
index 3cbce9cc29b863d90e8eb880045aff71408fbc88..5351e43cc9a6983a37f874eba7aa13730df43bf3 100644
--- a/tests_lit/llvm2ice_tests/reorder-functions.ll
+++ b/tests_lit/llvm2ice_tests/reorder-functions.ll
@@ -37,27 +37,27 @@
 ; RUN:    -reorder-functions-window-size=0xffffffff \
 ; RUN:    | FileCheck %s --check-prefix=WINDOWSIZEMAX
 
-define void @func1() {
+define internal void @func1() {
   ret void
 }
 
-define void @func2() {
+define internal void @func2() {
   ret void
 }
 
-define void @func3() {
+define internal void @func3() {
   ret void
 }
 
-define void @func4() {
+define internal void @func4() {
   ret void
 }
 
-define void @func5() {
+define internal void @func5() {
   ret void
 }
 
-define void @func6() {
+define internal void @func6() {
   ret void
 }