[llvm] [PowerPC] Alignment of toc-data symbol should not be increased during optimizations (PR #94593)

[Kai Luo via llvm-commits]

bzEq wrote:

> Why does AIX have this requirement? ppc64 ELFv2 ABI can increase the alignment without any issue.

I tend to believe it's implementation's limitation, see https://github.com/llvm/llvm-project/blob/f2441b0297501610b59527f93e3174c814d63941/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp#L2727.

https://github.com/llvm/llvm-project/pull/94593