[Bug rtl-optimization/44214] Compiler does not optimize vector divide with -freciprocal-math (or -ffast-math)

[wschmidt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44214

--- Comment #5 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2012-04-20 
14:19:23 UTC ---
Author: wschmidt
Date: Fri Apr 20 14:19:13 2012
New Revision: 186625

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186625
Log:
gcc:

2012-04-20  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

    PR rtl-optimization/44214
    * fold-const.c (exact_inverse): New function.
    (fold_binary_loc): Fold vector and complex division by constant into
    multiply by recripocal with flag_reciprocal_math; fold vector division
    by constant into multiply by reciprocal with exact inverse.

gcc/testsuite:

2012-04-20  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

    PR rtl-optimization/44214
    * gcc.dg/pr44214-1.c: New test.
    * gcc.dg/pr44214-2.c: Likewise.
    * gcc.dg/pr44214-3.c: Likewise.



Added:
    trunk/gcc/testsuite/gcc.dg/pr44214-1.c
    trunk/gcc/testsuite/gcc.dg/pr44214-2.c
    trunk/gcc/testsuite/gcc.dg/pr44214-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog