richard.townsend.arm added inline comments.

================
Comment at: lib/CodeGen/MicrosoftCXXABI.cpp:1106
+
+    FI.getReturnInfo().setInReg(isAArch64 && !IsSizeGreaterThan128(RD));
 
----------------
I'm not sure what the IsSizeGreaterThan128 check is doing here - if the return 
type is over 128 bits, then it will be indirectly returned in X8 with this 
check, which is not always what we want (e.g. in 
https://bugs.llvm.org/show_bug.cgi?id=41135 ostream.cpp, MSVC expects the value 
returned in X1). Another check of hasMicrosoftABIRestrictions might be OK, but 
that's also not quite right due to the size check. 


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D60349/new/

https://reviews.llvm.org/D60349



_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

Reply via email to