[PATCH v2 0/9] Separate shrink-wrapping

[Segher Boessenkool <segher at kernel dot crashing dot org>]

This is the second version.  Concern was renamed to component, and all
other comments were addressed (I hope).  It still uses only two bitmaps
for the component placement, but now they are called needs_components
and has_components, which hopefully is easier to follow.  The "can this
prologue be moved earlier for no cost" test is generalised a bit, and
the cost estimate explicitly excludes backedges, which makes it easier
to see that prologues will not be placed inside a loop if there is no
benefit to that (I didn't see any different generated code because of
this change).  And new and updated comments all over, of course.

Is this okay for trunk?


Segher


 gcc/cfgcleanup.c           |   5 +
 gcc/common.opt             |   4 +
 gcc/config/rs6000/rs6000.c | 257 ++++++++++++++++-
 gcc/dce.c                  |   9 +
 gcc/doc/invoke.texi        |  11 +-
 gcc/doc/tm.texi            |  54 ++++
 gcc/doc/tm.texi.in         |  29 ++
 gcc/emit-rtl.h             |   4 +
 gcc/function.c             |  15 +-
 gcc/regcprop.c             |   4 +
 gcc/regrename.c            |  13 +-
 gcc/sel-sched-ir.c         |   1 +
 gcc/shrink-wrap.c          | 705 +++++++++++++++++++++++++++++++++++++++++++++
 gcc/shrink-wrap.h          |   1 +
 gcc/target.def             |  57 ++++
 15 files changed, 1150 insertions(+), 19 deletions(-)

-- 
1.9.3