[Bug tree-optimization/92645] Hand written vector code is 450 times slower when compiled with GCC compared to Clang

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92645

--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Dec  3 07:36:14 2019
New Revision: 278920

URL: https://gcc.gnu.org/viewcvs?rev=278920&root=gcc&view=rev
Log:
2019-12-03  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/92645
        * tree-ssa.c (execute_update_addresses_taken): Avoid representing
        a full def of a vector via a BIT_INSERT_EXPR.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa.c