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-rw-r--r--compiler/cmm/Cmm.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/cmm/Cmm.hs b/compiler/cmm/Cmm.hs
index 4b18e46cdf..c48269ecf5 100644
--- a/compiler/cmm/Cmm.hs
+++ b/compiler/cmm/Cmm.hs
@@ -384,6 +384,7 @@ data CallishMachOp
| MO_F32_Exp
| MO_F32_Sqrt
| MO_WriteBarrier
+ | MO_Touch -- Keep variables live (when using interior pointers)
deriving (Eq, Show)
pprCallishMachOp :: CallishMachOp -> SDoc