================
@@ -8410,17 +8447,57 @@ AArch64TargetLowering::LowerCall(CallLoweringInfo &CLI,
InGlue = Chain.getValue(1);
}
+ unsigned Opc = IsTailCall ? AArch64ISD::TC_RETURN : AArch64ISD::CALL;
+
std::vector<SDValue> Ops;
Ops.push_back(Chain);
Ops.push_back(Callee);
+ // Calls with operand bundle "clang.arc.attachedcall" are special. They
should
+ // be expanded to the call, directly followed by a special marker sequence
and
+ // a call to an ObjC library function. Use CALL_RVMARKER to do that.
+ if (CLI.CB && objcarc::hasAttachedCallOpBundle(CLI.CB)) {
+ assert(!IsTailCall &&
+ "tail calls cannot be marked with clang.arc.attachedcall");
+ Opc = AArch64ISD::CALL_RVMARKER;
+
+ // Add a target global address for the retainRV/claimRV runtime function
+ // just before the call target.
+ Function *ARCFn = *objcarc::getAttachedARCFunction(CLI.CB);
+ auto GA = DAG.getTargetGlobalAddress(ARCFn, DL, PtrVT);
+ Ops.insert(Ops.begin() + 1, GA);
+ } else if (CallConv == CallingConv::ARM64EC_Thunk_X64) {
+ Opc = AArch64ISD::CALL_ARM64EC_TO_X64;
+ } else if (GuardWithBTI)
+ Opc = AArch64ISD::CALL_BTI;
+
if (IsTailCall) {
// Each tail call may have to adjust the stack by a different amount, so
// this information must travel along with the operation for eventual
// consumption by emitEpilogue.
Ops.push_back(DAG.getTargetConstant(FPDiff, DL, MVT::i32));
}
+ if (CLI.PAI) {
+ const uint64_t Key = CLI.PAI->Key;
+ // Authenticated calls only support IA and IB.
+ if (Key > 1)
+ report_fatal_error("Unsupported key kind for authenticating call");
----------------
kovdan01 wrote:
Please add a test for the error message
https://github.com/llvm/llvm-project/pull/85736
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