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-rw-r--r--powerpc/Machregs.v3
1 files changed, 2 insertions, 1 deletions
diff --git a/powerpc/Machregs.v b/powerpc/Machregs.v
index b56812e5..7137bce2 100644
--- a/powerpc/Machregs.v
+++ b/powerpc/Machregs.v
@@ -163,7 +163,8 @@ Fixpoint destroyed_by_clobber (cl: list string): list mreg :=
Definition destroyed_by_builtin (ef: external_function): list mreg :=
match ef with
| EF_builtin id sg =>
- if string_dec id "__builtin_atomic_exchange" then R10::nil
+ if string_dec id "__builtin64_set_spr" then R10::nil
+ else if string_dec id "__builtin_atomic_exchange" then R10::nil
else if string_dec id "__builtin_atomic_compare_exchange" then R10::R11::nil
else F13 :: nil
| EF_vload _ => R11 :: nil