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-rw-r--r--lib/CodeGen/GlobalISel/CallLowering.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/GlobalISel/CallLowering.cpp b/lib/CodeGen/GlobalISel/CallLowering.cpp
index 114c068749eb..07de31bec660 100644
--- a/lib/CodeGen/GlobalISel/CallLowering.cpp
+++ b/lib/CodeGen/GlobalISel/CallLowering.cpp
@@ -38,6 +38,9 @@ bool CallLowering::lowerCall(
ArgInfo OrigArg{ArgRegs[i], Arg->getType(), ISD::ArgFlagsTy{},
i < NumFixedArgs};
setArgFlags(OrigArg, i + AttributeList::FirstArgIndex, DL, CS);
+ // We don't currently support swifterror or swiftself args.
+ if (OrigArg.Flags.isSwiftError() || OrigArg.Flags.isSwiftSelf())
+ return false;
OrigArgs.push_back(OrigArg);
++i;
}