simoncook added a comment. For added context, I have gone and double-checked with GCC's implementation both for AArch64 and RISC-V and for registers used by the calling convention the compiler will still use them for argument passing and return values, but otherwise won't use it for any temporaries/register allocation purposes, which does have the side effect of confusing behaviour unless carefully documented.
I can implement errors for using calling convention registers when there are functions that take arguments, but this would be an explicit deviation in behaviour between the two compilers. I presume we would want to do that anyway because it's safer/more clear? Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D67185/new/ https://reviews.llvm.org/D67185 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
