tree 298a730896de5b7e26102b446ac5bbbf86101ac9
parent 82f4960daab08c5a40cf2125414ac9f429eccc66
author Jacob Bramley <jacob.bramley@arm.com> 1612795170 +0000
committer Jacob Bramley <jacob.bramley@arm.com> 1612795552 +0000

Further tighten AArch32 push/pop selection.

Notably:

- Check IT block status for pops that branch (by loading to pc).
- Enforce register selection rules regarding sp, lr and pc. These differ
  between T32 and A32, and sometimes between encodings.
- Relax restrictions for A1 pop (multiple); a single register is
  permitted here.

Change-Id: Ic5fe640c957652dfe2deb9d244de07a9460f1c1c