llvm-project

e4328b80 - [AArch64][SME] Limit where SME ABI optimizations apply (#179273)

[AArch64][SME] Limit where SME ABI optimizations apply (#179273) These were added recently with a fairly complex propagation step, however, these optimizations can cause regressions in some cases. This patch limits the cross-block optimizations to the simple case picking a state that matches all incoming blocks. If any block doesn't match, we fallback to using "ACTIVE", the default state.