DavidSpickett added a comment. From reading the release note my understanding is that before this fix the caller of a function would store `z0-z7` in situations where it did not need to. Which seems low impact unless you were doing something that read the previous stack frame (but nevertheless a difference from the AAPCS).
If that's what you were trying to get across then great! > This affects functions where the first SVE parameter appears in the 9th or > later arguments I'm reading https://github.com/ARM-software/abi-aa/blob/main/aapcs64/aapcs64.rst#642parameter-passing-rules. Wouldn't the type of the preceding 8 arguments also be relevant? Though I was surprised to see that "NSRN" covers floating point and SVE registers, so I'm hardly an expert here. > and the function does not return an SVE type. This is because the function would return in `z0` therefore the caller must preserve at least `z0` and the ABI tells you to preserve `z0-z7` to do that? Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D129135/new/ https://reviews.llvm.org/D129135 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
