[clang] [CIR] Function calls with aggregate arguments and return values (PR #143377)

[Andy Kaylor via cfe-commits]

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@@ -312,8 +329,47 @@ RValue CIRGenFunction::emitCall(const CIRGenFunctionInfo 
&funcInfo,
       assert(!cir::MissingFeatures::opCallBitcastArg());
       cirCallArgs[argNo] = v;
     } else {
-      assert(!cir::MissingFeatures::opCallAggregateArgs());
-      cgm.errorNYI("emitCall: aggregate function call argument");
+      Address src = Address::invalid();
+      if (!arg.isAggregate())
+        cgm.errorNYI(loc, "emitCall: non-aggregate call argument");
+      else
+        src = arg.hasLValue() ? arg.getKnownLValue().getAddress()
+                              : arg.getKnownRValue().getAggregateAddress();
----------------
andykaylor wrote:

Are both of these cases covered in the test?

https://github.com/llvm/llvm-project/pull/143377
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