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[Bug target/29818] code with SSE segfaults with gcc-3.4.6, runs fine with gcc-4.1.1
- From: "sergstesh at yahoo dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 14 Nov 2006 01:04:10 -0000
- Subject: [Bug target/29818] code with SSE segfaults with gcc-3.4.6, runs fine with gcc-4.1.1
- References: <bug-29818-13529@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from sergstesh at yahoo dot com 2006-11-14 01:04 -------
(In reply to comment #2)
> You should note that 3.4.x is no longer being maintained so this bug will most
> likely be closed as fixed as you already mention it works in 4.1.1.
>
That's too bad.
I am developing pretty heavy SSE-based code, and performance-wise gcc-3.4.6 is
the best so far. Sorry, I cant' post the code, but here are performance
figures (output of 'time' command):
with gcc-4.1.1 -O3:
567.341u 2.098s 9:35.75 98.9% 0+0k 0+0io 0pf+0w
567.055u 2.229s 9:37.18 98.6% 0+0k 0+0io 0pf+0w
with gcc-3.4.6 -O2:
543.440u 2.038s 9:13.76 98.5% 0+0k 0+0io 0pf+0w
542.925u 2.149s 9:16.29 97.9% 0+0k 0+0io 0pf+0w
.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29818