[ACTIVITY] Weekly status

[Richard Sandiford]

* Looked at LP bug 736661.  Sent a patch upstream.  Some positive feedback,
  but it hasn't been approved or rejected yet.

* Looked at the old R_ARM_THM_CALL linker bug, after Matthias prepared
  a self-contained testcase (thanks).  Attached a patch to the bug.
  Will submit upstream next week if testing goes OK.

* Looked at why the backport of lp823708-4.5 retriggered the same
  bootstrap failure that Chung-Lin's patch did.  Haven't been able
  to reproduce yet.

* Looked at making the neon_vget_high/low patterns use ordinary
  subreg moves.  Found that this triggered a fair few latent bugs
  in the rtl optimisers.  Tried to fix those.  This gave some nice
  improvements in some of the libav loops.

* Added h264 loops to the libav microbenchmarks.

* Blueprints.

* Upstream patch review.

Richard