[clang] [llvm] [PowerPC] Take ABI into account for data layout (PR #149725)

[Alex Rønne Petersen via cfe-commits]

alexrp wrote:

> Fair point, ideally I'd like both the "proper" ELFv2 with BE to have its target triple and the "loosened" ELFv2 to have one. Currently, LLVM will enable the VSX and POWER8-specific parts of the ABI based on the endianess or CPU, not the ABI. That should probably be changed then? I could do that in a follow-up PR.

Potentially, but we should probably get some input from the PPC backend maintainers (I'm not one) before making changes on that front.

https://github.com/llvm/llvm-project/pull/149725