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Backport from mainline
authorebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4>
Sat, 19 May 2012 23:16:33 +0000 (23:16 +0000)
committerebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4>
Sat, 19 May 2012 23:16:33 +0000 (23:16 +0000)
commit0842682d0719cdf88fee692dc4f14eeb73bb2bde
treeca6da458fdf7fb0424924435dc3e20345eadfacc
parent54b6d55e2a681d419e01391f88c7fa81e111ad35
Backport from mainline
2012-05-14  Eric Botcazou  <ebotcazou@adacore.com>

* tree-ssa-pre.c (can_value_number_call): Delete.
(compute_avail): Skip all statements with side effects.
<GIMPLE_CALL>: Skip calls to internal functions.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@187683 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/tree-ssa-pre.c