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-rw-r--r--llvm/lib/Target/X86/X86InstructionSelector.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86InstructionSelector.cpp b/llvm/lib/Target/X86/X86InstructionSelector.cpp
index f6530c4eee2..44bbc3f1b3f 100644
--- a/llvm/lib/Target/X86/X86InstructionSelector.cpp
+++ b/llvm/lib/Target/X86/X86InstructionSelector.cpp
@@ -484,6 +484,11 @@ bool X86InstructionSelector::selectLoadStoreOp(MachineInstr &I,
const RegisterBank &RB = *RBI.getRegBank(DefReg, MRI, TRI);
auto &MemOp = **I.memoperands_begin();
+ if (MemOp.getOrdering() != AtomicOrdering::NotAtomic) {
+ DEBUG(dbgs() << "Atomic load/store not supported yet\n");
+ return false;
+ }
+
unsigned NewOpc = getLoadStoreOp(Ty, RB, Opc, MemOp.getAlignment());
if (NewOpc == Opc)
return false;
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