[Bug lto/45375] [meta-bug] Issues with building Mozilla with LTO

[markus at trippelsdorf dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375

--- Comment #160 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-12-13 09:52:37 UTC ---
(In reply to comment #159)
> > hal/Hal.gcda:           96.72%: num counts=30069, min counter=16389
> > hal/Hal.gcda:           97.50%: num counts=35296, min counter=10241
> > hal/Hal.gcda:           98.28%: num counts=43669, min counter=6145
> > hal/Hal.gcda:           99.06%: num counts=59589, min counter=3072
> > hal/Hal.gcda:           99.90%: num counts=115840, min counter=320
> > 
> > So it looks like you would want a cutoff of 97.5% to get close to what
> > was there before.
> 
> Setting the default cutoff to something like 95% would sound fine to me.  I
> see i asked to reduce the parameter but suggested 990. Markus, can you
> try setting HOT_BB_COUNT_WS_PERMILLE to 950?

It doesn't help:

 HOT_BB_COUNT_WS_PERMILLE=950: size of libxul.so: 42149632 bytes

(In reply to comment #157)
> (Unfortunately this new ICE happens with yesterdays gcc when linking libxul:
> 
> /var/tmp/mozilla-central/content/base/src/nsDocument.cpp: In member function
> ‘CreateRange’:
> /var/tmp/mozilla-central/content/base/src/nsDocument.cpp:4999:0: internal
> compiler error: in cgraph_mark_address_taken_node, at cgraph.c:1409
> 
> I will open a new PR for this later.)

See PR55669