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-rw-r--r--lib/Target/ARM/ARMISelLowering.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 7f89b2d168..97a5f9da12 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -441,6 +441,8 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
setOperationAction(ISD::ATOMIC_LOAD_NAND, MVT::i8, Expand);
setOperationAction(ISD::ATOMIC_LOAD_NAND, MVT::i16, Expand);
setOperationAction(ISD::ATOMIC_LOAD_NAND, MVT::i32, Expand);
+ // Since the libcalls include locking, fold in the fences
+ setShouldFoldAtomicFences(true);
}
// 64-bit versions are always libcalls (for now)
setOperationAction(ISD::ATOMIC_CMP_SWAP, MVT::i64, Expand);