[Bug tree-optimization/53645] Missed optimization for vector integer division lowering

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53645

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-06-28 
17:52:59 UTC ---
Author: jakub
Date: Thu Jun 28 17:52:51 2012
New Revision: 189052

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189052
Log:
    PR tree-optimization/53645
    * tree-vect-generic.c (expand_vector_divmod): Use MULT_HIGHPART_EXPR
    instead of VEC_WIDEN_MULT_{HI,LO}_EXPR followed by VEC_PERM_EXPR
    if possible.

    * gcc.c-torture/execute/pr53645-2.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr53645-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-generic.c