1 files changed, 6 insertions, 1 deletions
diff --git a/contrib/llvm/lib/Target/AArch64/AArch64InstrAtomics.td b/contrib/llvm/lib/Target/AArch64/AArch64InstrAtomics.td
index 153bcf75cbcd..35cd7735ceb7 100644
--- a/contrib/llvm/lib/Target/AArch64/AArch64InstrAtomics.td
+++ b/contrib/llvm/lib/Target/AArch64/AArch64InstrAtomics.td
@@ -409,13 +409,18 @@ let Predicates = [HasLSE] in {
   defm : LDOPregister_patterns<"LDADD", "atomic_load_add">;
   defm : LDOPregister_patterns<"LDSET", "atomic_load_or">;
   defm : LDOPregister_patterns<"LDEOR", "atomic_load_xor">;
+  defm : LDOPregister_patterns<"LDCLR", "atomic_load_clr">;
   defm : LDOPregister_patterns<"LDSMAX", "atomic_load_max">;
   defm : LDOPregister_patterns<"LDSMIN", "atomic_load_min">;
   defm : LDOPregister_patterns<"LDUMAX", "atomic_load_umax">;
   defm : LDOPregister_patterns<"LDUMIN", "atomic_load_umin">;
   defm : LDOPregister_patterns<"SWP", "atomic_swap">;
+  defm : CASregister_patterns<"CAS", "atomic_cmp_swap">;
+
+  // These two patterns are only needed for global isel, selection dag isel
+  // converts atomic load-sub into a sub and atomic load-add, and likewise for
+  // and -> clr.
   defm : LDOPregister_patterns_mod<"LDADD", "atomic_load_sub", "SUB">;
   defm : LDOPregister_patterns_mod<"LDCLR", "atomic_load_and", "ORN">;
-  defm : CASregister_patterns<"CAS", "atomic_cmp_swap">;
 }