--- Comment #5 from rguenth at gcc dot gnu dot org 2010-03-02 12:18 ---
(In reply to comment #4)
Is it possible for aliased writes to affect a const pointer? I was assuming
that it wasn't.
Yes, it is possible. C const qualification doesn't add any useful
information for a compiler
--- Comment #1 from astrange at ithinksw dot com 2010-03-02 03:45 ---
Created an attachment (id=20002)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20002action=view)
x86-64 asm output
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43224
--- Comment #2 from pinskia at gcc dot gnu dot org 2010-03-02 03:53 ---
I think what GCC is doing is correct as lsps could conflict with mul_q and
base_q as lsps is not marked as restrict.
Doing this:
#include string.h
void dequant_lsps(double *__restrict lsps, int num,
--- Comment #3 from pinskia at gcc dot gnu dot org 2010-03-02 03:56 ---
In fact that is correct, see PR 14192 for the reasons why.
--
pinskia at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #4 from astrange at ithinksw dot com 2010-03-02 04:00 ---
Is it possible for aliased writes to affect a const pointer? I was assuming
that it wasn't.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43224
