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Subject: [Bug target/40735] [4.4/4.5/4.6/4.7 Regression]  memory hog compiling big functions with -fPIE
Date: Mon, 16 Jan 2012 14:23:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40735

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.6.2, 4.7.0

--- Comment #14 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-16 14:16:09 UTC ---
(In reply to comment #4)
> This is likely caused by the DF merge.  There are numerous bugs about this
> already and nothing really can be done here.
> 
> Btw, my numbers are
> 
> rguenther@murzim:/tmp> ~/bin/maxmem2.sh gcc-4.4 -S -o /dev/null -g
> -fstack-protector -fPIE -Os test_node.i -std=gnu99
> total: 744108 kB
> rguenther@murzim:/tmp> ~/bin/maxmem2.sh gcc-4.3 -S -o /dev/null -g
> -fstack-protector -fPIE -Os test_node.i -std=gnu99
> total: 719836 kB
> rguenther@murzim:/tmp> ~/bin/maxmem2.sh gcc-4.2 -S -o /dev/null -g
> -fstack-protector -fPIE -Os test_node.i -std=gnu99
> total: 459757 kB

> ~/bin/maxmem2.sh gcc-4.6 -S -o /dev/null t.i -v -std=gnu99 -Os -fPIE -fstack-protector -g
total: 772239 kB
> ~/bin/maxmem2.sh gcc-4.7 -S -o /dev/null t.i -v -std=gnu99 -Os -fPIE -fstack-protector -g --param ggc-min-expand=100 --param ggc-min-heapsize=131072
total: 794883 kB

we're continuing to increase, thus re-confirmed.