[Bug tree-optimization/89475] Teach ccp about __builtin_bswap{16,32,64}

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89475

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Apr 30 09:07:28 2019
New Revision: 270680

URL: https://gcc.gnu.org/viewcvs?rev=270680&root=gcc&view=rev
Log:
        PR tree-optimization/89475
        * tree-ssa-ccp.c (evaluate_stmt): Handle BUILT_IN_BSWAP{16,32,64}
        calls.

        * gcc.dg/tree-ssa/pr89475.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr89475.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-store-merging.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c