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-rw-r--r--llvm/lib/Target/PowerPC/PPCISelLowering.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 7fde1238640..b90a5ee2834 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -8296,7 +8296,7 @@ SDValue PPCTargetLowering::LowerINTRINSIC_VOID(SDValue Op,
SDLoc DL(Op);
switch (cast<ConstantSDNode>(Op.getOperand(ArgStart))->getZExtValue()) {
case Intrinsic::ppc_cfence: {
- assert(ArgStart == 1);
+ assert(ArgStart == 1 && "llvm.ppc.cfence must carry a chain argument.");
assert(Subtarget.isPPC64() && "Only 64-bit is supported for now.");
return SDValue(DAG.getMachineNode(PPC::CFENCE8, DL, MVT::Other,
DAG.getNode(ISD::ANY_EXTEND, DL, MVT::i64,
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