Benjamin Maxwell 107260cc29
[AArch64][SME2] Don't preserve ZT0 around SME ABI routines (#132722)
This caused ZT0 to be preserved around `__arm_tpidr2_save` in functions
with "aarch64_new_zt0". The block in which `__arm_tpidr2_save` is called
is added by the SMEABIPass and may be reachable in cases where ZA has
not been enabled* (so using `str zt0` is invalid).

* (when za_save_buffer is null and num_za_save_slices is zero)
2025-03-25 10:09:25 +00:00
..
2023-08-08 21:59:53 +01:00

++ SVE CodeGen Warnings ++

When the WARN check lines fail in the SVE codegen tests it most likely means you
have introduced a warning due to:
1. Adding an invalid call to VectorType::getNumElements() or EVT::getVectorNumElements()
   when the type is a scalable vector.
2. Relying upon an implicit cast conversion from TypeSize to uint64_t.

For generic code, please modify your code to work with ElementCount and TypeSize directly.
For target-specific code that only deals with fixed-width vectors, use the fixed-size interfaces.
Please refer to the code where those functions live for more details.