Gentoo Archives: gentoo-amd64

From: Duncan <1i5t5.duncan@×××.net>
To: gentoo-amd64@l.g.o
Subject: [gentoo-amd64] FW: GCC4 and -ftree-vectorize
Date: Mon, 02 Oct 2006 10:54:07
Message-Id: efqqvt$sqh$6@sea.gmane.org
1 -ftree-vectorize just came up on the gentoo-dev list. I've not even
2 checked the URLs yet, but since it came up here, I thought I'd ask about
3 it and having gotten a response, here's the gist. (FWIW, I've been
4 running it experimentally for a bit now. No issues with it have I seen,
5 but I've not done a full emerge --emptytree system/world yet.) I'll
6 probably have a bit more to say about it after checking the tinyurls,
7 which at this point I don't even know where they go yet, let alone their
8 content.
9
10 <quote from Ryan Hill>
11
12 Duncan wrote:
13
14 > Could you point me at some info on this one (-ftree-vectorize)? It came
15 > up on the amd64 list a week or so ago[]
16
17 http://tinyurl.com/l75we
18
19 They've fixed quite a few of the ICE's since last I looked, though there's
20 more than a couple that went in after 4.1.1. 4.2 is a little better, but
21 I'm having enough trouble getting it to build things properly _without_
22 using any fancy flags right now. ;p
23
24 See http://tinyurl.com/rt3aa for some real-world examples.
25
26 > Or does the problem not necessarily apply to amd64?
27
28 I'd say that there's more ICE's on i686-pc-linux-gnu than
29 x86_64-*-linux-gnu, but there's still enough. Luckily Halcy0n was really
30 good for reducing testcases and pushing them upstream, so a lot of these
31 issues got fixed at the source.
32
33 <end of quote from Ryan>
34
35 --
36 Duncan - List replies preferred. No HTML msgs.
37 "Every nonfree program has a lord, a master --
38 and if you use the program, he is your master." Richard Stallman
39
40 --
41 gentoo-amd64@g.o mailing list

Replies

Subject Author
[gentoo-amd64] Re: FW: GCC4 and -ftree-vectorize Duncan <1i5t5.duncan@×××.net>
[gentoo-amd64] Re: FW: GCC4 and -ftree-vectorize Duncan <1i5t5.duncan@×××.net>