Bug 50422 - Furmark.exe crash with wine (32 bits under 64 bits) with llvm-3.1 and r600-llvm-compiler enabled
Summary: Furmark.exe crash with wine (32 bits under 64 bits) with llvm-3.1 and r600-ll...
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/Gallium/r600 (show other bugs)
Version: git
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Default DRI bug account
QA Contact:
URL:
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Depends on:
Blocks:
 
Reported: 2012-05-28 03:19 UTC by Laurent carlier
Modified: 2012-10-31 16:35 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
wine output and backtrace (18.21 KB, text/plain)
2012-05-28 03:19 UTC, Laurent carlier 		Details
output with R600_DUMP_SHADER=1 (45.68 KB, text/plain)
2012-05-28 03:21 UTC, Laurent carlier 		Details
furmark output with llvm-3.1 and r600-llvm-compiler enabled (1.47 MB, image/png)
2012-10-31 12:53 UTC, Laurent carlier 		Details
View All

Description Laurent carlier 2012-05-28 03:19:24 UTC 
Created attachment 62162 [details]
wine output and backtrace

* glxinfo32:
OpenGL renderer string: Gallium 0.4 on AMD RV770
OpenGL version string: 2.1 Mesa 8.1-devel (git-6404095)
OpenGL shading language version string: 1.30

* uname -a
Linux archMain 3.4.0-1-ARCH #1 SMP PREEMPT Mon May 21 10:10:13 CEST 2012 x86_64 GNU/Linux
Comment 1 Laurent carlier 2012-05-28 03:21:21 UTC 
Created attachment 62163 [details]
output with R600_DUMP_SHADER=1
Comment 2 Tom Stellard 2012-06-19 19:11:00 UTC 
I've been seeing a few strange crashes in the LLVM backend when using wine.  What version of wine are you using?  Does it work with an older version of wine?
Comment 3 Henri Verbeet 2012-06-20 08:41:51 UTC 
This isn't just another instance of "Clang is broken" / bug 44466, right?
Comment 4 Laurent carlier 2012-06-24 06:20:02 UTC 
(In reply to comment #2)
> I've been seeing a few strange crashes in the LLVM backend when using wine. 
> What version of wine are you using?  Does it work with an older version of
> wine?

I've tried with several version of wine without much success
Comment 5 Laurent carlier 2012-06-24 06:33:47 UTC 
(In reply to comment #3)
> This isn't just another instance of "Clang is broken" / bug 44466, right?

llvm and mesa are all built with a multilib gcc, perhaps it's the culprit ? Another bug similer to https://bugs.freedesktop.org/show_bug.cgi?id=44466 ?

I've had to force host and target to i386-pc-linux-gnu to get a proper lib32 llvm.....


related ? http://llvm.org/bugs/show_bug.cgi?id=11145
Comment 6 Johannes Obermayr 2012-10-28 22:13:27 UTC 
Does it crash with DRAW_USE_LLVM=0?

If not, please try whether this patch can provide more information:
https://bugs.freedesktop.org/show_bug.cgi?id=48351#c10
Comment 7 Laurent carlier 2012-10-31 12:53:04 UTC 
Created attachment 69350 [details]
furmark output with llvm-3.1 and r600-llvm-compiler enabled

Wine doesn't fail anymore, now rendering only garbage, so there is progress!
Comment 8 Laurent carlier 2012-10-31 13:01:01 UTC 
I don't know if it's related, but etqw gives me also similar garbaged output
Comment 9 Laurent carlier 2012-10-31 16:30:50 UTC 
The culprit for broken output is (after bisecting):
5ab82e0ccf84855e9311ebfc58d1b57b437ed991 is the first bad commit
commit 5ab82e0ccf84855e9311ebfc58d1b57b437ed991
Author: Vincent Lejeune <vljn@ovi.com>
Date:   Fri Oct 19 15:49:06 2012 +0200

    r600g: tgsi-to-llvm emits right input intrinsics
    
    Reviewed-by: Tom Stellard <thomas.stellard at amd.com>

:040000 040000 e678b643c10733ff7ef7163f3e21aee0a16ebb6e 4d10bf29f966beb56e12c385529284c53db1f950 M      src
Comment 10 Laurent carlier 2012-10-31 16:35:01 UTC 
No more crash, so closing, a new bug is opened for broken output.

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