[Bug target/65456] powerpc64le autovectorized copy loop missed optimization

["amodra at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65456

Alan Modra <amodra at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |amodra at gmail dot com

--- Comment #14 from Alan Modra <amodra at gmail dot com> ---
This part
   || (((MODE) == SFmode || (MODE) == DFmode || (MODE) == TFmode        \
        || (MODE) == SDmode || (MODE) == DDmode || (MODE) == TDmode)    \
       && (ALIGN) < 32)                                                 \
is wrong for power8 too.  See "POWER8 Processor User’s Manual for the
Single-Chip Module", section 2.1.4 Storage Access Alignment Support Overview. 
According to that, alignment interrupt does not occur on misaligned floating
point loads and stores, except for the quadword insns.  Which seems to
contradict "Power ISA Version 2.07", section 6.5.8 Alignment Interrupt.  I
guess the ISA doc needs another update.
>From gcc-bugs-return-482125-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 28 04:17:49 2015
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From: "timshen at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/65420] Enumerators in std::regex_constants should be constexpr variables instead
Date: Sat, 28 Mar 2015 11:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide420

--- Comment #1 from Tim Shen <timshen at gcc dot gnu.org> ---
Author: timshen
Date: Sat Mar 28 04:17:12 2015
New Revision: 221750

URL: https://gcc.gnu.org/viewcvs?rev"1750&root=gcc&view=rev
Log:
    PR libstdc++/65420
    * include/bits/regex_constants.h: Use constexpr variables for flags.
    * testsuite/28_regex/constants/constexpr.cc: New testcase.


Added:
    trunk/libstdc++-v3/testsuite/28_regex/constants/constexpr.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/regex_constants.h