/// support for these atomic instructions, and also have different options
/// w.r.t. what they should expand to.
enum class AtomicExpansionKind {
- None, // Don't expand the instruction.
- LLSC, // Expand the instruction into loadlinked/storeconditional; used
- // by ARM/AArch64.
- CmpXChg, // Expand the instruction into cmpxchg; used by at least X86.
+ None, // Don't expand the instruction.
+ LLSC, // Expand the instruction into loadlinked/storeconditional; used
+ // by ARM/AArch64.
+ LLOnly, // Expand the (load) instruction into just a load-linked, which has
+ // greater atomic guarantees than a normal load.
+ CmpXChg, // Expand the instruction into cmpxchg; used by at least X86.
};
static ISD::NodeType getExtendForContent(BooleanContent Content) {