Bug 65085 - [radeonsi LLVM] Segfault during OpenCL kernel compilation
Summary: [radeonsi LLVM] Segfault during OpenCL kernel compilation
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/Gallium/radeonsi (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Default DRI bug account
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Reported: 2013-05-28 15:43 UTC by Niels Ole Salscheider
Modified: 2013-11-16 02:26 UTC (History)
0 users

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Attachments
Kernel that causes the segfault (476 bytes, text/plain)
2013-05-28 15:43 UTC, Niels Ole Salscheider 		Details
Patch to work around the issue (728 bytes, patch)
2013-05-28 15:43 UTC, Niels Ole Salscheider 		Details | Splinter Review
Full backtrace (43.98 KB, text/plain)
2013-05-28 15:44 UTC, Niels Ole Salscheider 		Details
View All

Description Niels Ole Salscheider 2013-05-28 15:43:05 UTC 
Created attachment 79901 [details]
Kernel that causes the segfault

I get a segmentation fault in LLVM with Tom Stellard's recent radeonsi compute patches (http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130520/175743.html) with the attached kernel.

I can work around the issue when executing the if-block in the kernel unconditionally or with the attached patch to LLVM.
Desc.OpInfo[0].RegClass equals -1 when the segmentation fault occurs.
Comment 1 Niels Ole Salscheider 2013-05-28 15:43:39 UTC 
Created attachment 79903 [details] [review]
Patch to work around the issue
Comment 2 Niels Ole Salscheider 2013-05-28 15:44:07 UTC 
Created attachment 79904 [details]
Full backtrace
Comment 3 Tom Stellard 2013-11-16 02:26:42 UTC 
This is working for me with the latest LLVM code.  Please re-open if it is not working for you.

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