[Bug rtl-optimization/53908] [4.6 Regression] csa removes needed memory load

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53908

--- Comment #19 from Steven Bosscher <steven at gcc dot gnu.org> 2012-07-16 09:36:11 UTC ---
Author: steven
Date: Mon Jul 16 09:36:04 2012
New Revision: 189512

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189512
Log:
Backport from trunk:

gcc/
    PR rtl-optimization/53908
    * df-problems.c (can_move_insns_across): When doing
    memory-reference book-keeping, handle call insns.

testsuite/
    PR rtl-optimization/53908
    * gcc.dg/torture/pr53908.c: New test.


Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/torture/pr53908.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/df-problems.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog