[Bug 1023614] New: [LLVM] [AMDGPU] libllvm shader compiler creates invalid code

4 Feb 2017

      http://bugzilla.opensuse.org/show_bug.cgi?id=1023614

            Bug ID: 1023614
           Summary: [LLVM] [AMDGPU] libllvm shader compiler creates
                    invalid code
    Classification: openSUSE
           Product: openSUSE Distribution
           Version: Leap 42.2
          Hardware: Other
                OS: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Kernel
          Assignee: kernel-maintainers@forge.provo.novell.com
          Reporter: f.thiessen@gmx.de
        QA Contact: qa-bugs@suse.de
          Found By: ---
           Blocker: ---

(Not sure if component Kernel is ok, but as it affects the userspace gpu
compiler i thought it might fit).

I dicovered some crashes of applications since the upgrade to 42.2 (from 42.1).
E.g. the steam game "Airscape" crashes with this error:
...
Steam_SetMinidumpSteamID:  Caching Steam ID:  76561198142264195 [API loaded no]
ATTENTION: default value of option force_s3tc_enable overridden by environment.
[17690:0204/180824:ERROR:sandbox_linux.cc(297)] InitializeSandbox() called with multiple threads in process gpu-process
LLVM triggered Diagnostic Handler: unsupported call to function exp10f in main
[17656:0204/180825:ERROR:breakpad_linux.cc(1226)] crash dump file written to /tmp/chromium-gpu-process-minidump-237b21943f4e8916.dmp
file:///tmp/.org.chromium.Chromium.fKBPuJ/c2runtime.js:663
var Dh=function(){function g(a){throw a;}function v(a){eval.call(null,a)}funct
                                      ^
TypeError: Cannot set property 'Dj' of null
    at g.kg (file:///tmp/.org.chromium.Chromium.fKBPuJ/c2runtime.js:50:294)
    at t.j7 (file:///tmp/.org.chromium.Chromium.fKBPuJ/c2runtime.js:94:329)
    at t.Yq (file:///tmp/.org.chromium.Chromium.fKBPuJ/c2runtime.js:126:437)
    at XMLHttpRequest.Zf.a.onload (file:///tmp/.org.chromium.Chromium.fKBPuJ/c2runtime.js:91:365)
The interessting part and the part it has in common with the other crashes is:
...
LLVM triggered Diagnostic Handler: unsupported call to function exp10f in main
I found out (thanks to the developer
http://steamcommunity.com/app/317250/discussions/0/154644598513096190/ ) that
this is caused by:

https://bugs.freedesktop.org/show_bug.cgi?id=96495
https://reviews.llvm.org/D21282

So this is a bug in llvm < 3.9 and as Leap is using llvm 3.8 this affects Leap.

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[Bug 1023614] New: [LLVM] [AMDGPU] libllvm shader compiler creates invalid code

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