[Bug tree-optimization/80622] [8 Regression] wrong code at -O1 and above in both 32-bit and 64-bit modes on x86_64-linux-gnu

[jamborm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80622

--- Comment #8 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Author: jamborm
Date: Thu May  4 16:19:20 2017
New Revision: 247604

URL: https://gcc.gnu.org/viewcvs?rev=247604&root=gcc&view=rev
Log:
[PR 80622] Treat const pools as initialized in SRA

2017-05-04  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/80622
        * tree-sra.c (comes_initialized_p): New function.
        (build_accesses_from_assign): Only set write lazily when
        comes_initialized_p is false.
        (analyze_access_subtree): Use comes_initialized_p.
        (propagate_subaccesses_across_link): Assert !comes_initialized_p
        instead of testing for PARM_DECL.

testsuite/
        * gcc.dg/tree-ssa/pr80622.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr80622.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-sra.c