[Bug tree-optimization/57742] memset(malloc(n),0,n) -> calloc(n,1)

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57742

--- Comment #22 from Marc Glisse <glisse at gcc dot gnu.org> ---
Author: glisse
Date: Wed Jun 25 12:27:13 2014
New Revision: 211977

URL: https://gcc.gnu.org/viewcvs?rev=211977&root=gcc&view=rev
Log:
2014-06-25  Marc Glisse  <marc.gli...@inria.fr>

    PR tree-optimization/57742
gcc/
    * tree-ssa-strlen.c (handle_builtin_memset): Update strinfo
    after replacing the statement.
gcc/testsuite/
    * gcc.dg/tree-ssa/calloc-3.c: New file.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/calloc-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-strlen.c