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-rw-r--r--backend/Coloring.v2
1 files changed, 2 insertions, 0 deletions
diff --git a/backend/Coloring.v b/backend/Coloring.v
index 67824ae3..28626cba 100644
--- a/backend/Coloring.v
+++ b/backend/Coloring.v
@@ -183,6 +183,8 @@ Definition add_edges_instr
let largs := loc_arguments sig in
add_prefs_call args largs
(add_interf_call ros largs g)
+ | Ibuiltin ef args res s =>
+ add_interf_op res live g
| Ireturn (Some r) =>
add_pref_mreg r (loc_result sig) g
| _ => g