2 Commits

Author SHA1 Message Date
Jonas Paulsson
0eff46f87f [SystemZ] Fix handling of vectors and their exposure of the vector ABI.
- Global vector variables expose the vector ABI through their alignments only
  if they are >=16 bytes in size.

- Vectors passed between functions expose the vector ABI only if they are
  <=16 bytes in size.

LLVM test suite builds with gcc/clang now give the same gnu attributes emitted.

Reviewed By: Ulrich Weigand

Differential Revision: https://reviews.llvm.org/D141409
2023-01-27 20:24:09 +01:00
Jonas Paulsson
481bb44baa [SystemZ] Emit a .gnu_attribute for an externally visible vector abi.
On SystemZ, the vector ABI changes depending on the presence of hardware
vector support. Therefore, each binary compiled with a visible vector ABI
(e.g. one that calls an external function with a vector argument) should be
marked with a .gnu_attribute describing this.

Reviewed By: uweigand

Differential Revision: https://reviews.llvm.org/D105067
2022-12-06 12:53:40 -06:00