[Bug tree-optimization/72517] [7 Regression] 436.cactusADM: More than 40% regression in O3 and Ofast on AMD bdver4 m/c.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72517

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jul 26 14:07:05 2016
New Revision: 238756

URL: https://gcc.gnu.org/viewcvs?rev=238756&root=gcc&view=rev
Log:
2016-07-26  Richard Biener  <rguenther@suse.de>

        PR middle-end/72517
        * expmed.c (extract_bit_field_1): Constrain the vector mode
        with element size matching the extraction mode size when
        choosing a better vector mode to do the extraction from.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expmed.c