[Bug 97887] llvm segfault in janusvr -render vive

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97887

Nicolai Hähnle  changed:

   What|Removed |Added

 Resolution|--- |FIXED
 Status|NEW |RESOLVED

--- Comment #3 from Nicolai Hähnle  ---
This should be fixed in Mesa master now (commit
6f87d7a14699277be6dd17e9e712841c4057c4df).

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[Bug 97887] llvm segfault in janusvr -render vive

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97887

--- Comment #2 from Nicolai Hähnle  ---
I can reproduce this running plain JanusVR, and I'm going to investigate. Looks
like there are actually two bugs - the one you originally reported, and another
that prevents proper dumping of the affected shader.

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[Bug 97887] llvm segfault in janusvr -render vive

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97887

--- Comment #1 from Christoph Haag  ---
Created attachment 126706
  --> https://bugs.freedesktop.org/attachment.cgi?id=126706=edit
gdb.txt assertion with full backtrace

With full debugging llvm and mesa I get an assertion instead:

janusvr:
/home/chris/build/llvm-svn/src/llvm/include/llvm/Analysis/LoopInfoImpl.h:247:
void llvm::LoopBase::verifyLoop() const [with BlockT = llvm::BasicBlock;
LoopT = llvm::Loop]: Assertion
`std::any_of(GraphTraits::child_begin(BB),
GraphTraits::child_end(BB), [&](BlockT *B){return contains(B);}) &&
"Loop block has no in-loop successors!"' failed.

backtrace full attached

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[Bug 97887] llvm segfault in janusvr -render vive

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97887

Bug ID: 97887
   Summary: llvm segfault in janusvr -render vive
   Product: Mesa
   Version: git
  Hardware: Other
OS: All
Status: NEW
  Severity: normal
  Priority: medium
 Component: Drivers/Gallium/radeonsi
  Assignee: dri-devel at lists.freedesktop.org
  Reporter: haagch at frickel.club
QA Contact: dri-devel at lists.freedesktop.org

Created attachment 126700
  --> https://bugs.freedesktop.org/attachment.cgi?id=126700=edit
stderr output with R600_DEBUG=vs,tcs,tes,gs,ps,cs

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 480] (rev c7)
mesa git, linux drm-next-4.9-wip, llvm 4.0.0svn_r282018

So I'm trying to start janusvr -render vive with the steamvr-osvr steamvr
plugin. Because osvr-rendermanager still doesn't do core profile, I start it
with

MESA_GL_VERSION_OVERRIDE=3.3COMPAT MESA_GLSL_VERSION_OVERRIDE=330 ./janusvr
-render vive

But llvm segfaults:

Thread 12 "si_shader:1" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffc3568700 (LWP 28734)]
0x7fffc59ee0c6 in
llvm::SSAUpdaterImpl::BuildBlockList(llvm::BasicBlock*,
llvm::SmallVectorImpl*) ()
from /usr/lib/libLLVM-4.0svn.so
#0  0x7fffc59ee0c6 in
llvm::SSAUpdaterImpl::BuildBlockList(llvm::BasicBlock*,
llvm::SmallVectorImpl*) () at
/usr/lib/libLLVM-4.0svn.so
#1  0x7fffc59f2acf in
llvm::SSAUpdater::GetValueAtEndOfBlockInternal(llvm::BasicBlock*) () at
/usr/lib/libLLVM-4.0svn.so
#2  0x7fffc59f942a in
llvm::SSAUpdater::RewriteUseAfterInsertions(llvm::Use&) () at
/usr/lib/libLLVM-4.0svn.so
#3  0x7fffc5cb7551 in (anonymous
namespace)::StructurizeCFG::runOnRegion(llvm::Region*, llvm::RGPassManager&) ()
at /usr/lib/libLLVM-4.0svn.so
#4  0x7fffc5f3571c in llvm::RGPassManager::runOnFunction(llvm::Function&)
() at /usr/lib/libLLVM-4.0svn.so
#5  0x7fffc53c03a2 in llvm::FPPassManager::runOnFunction(llvm::Function&)
() at /usr/lib/libLLVM-4.0svn.so
#6  0x7fffc53c0443 in llvm::FPPassManager::runOnModule(llvm::Module&) () at
/usr/lib/libLLVM-4.0svn.so
#7  0x7fffc53c0a54 in llvm::legacy::PassManagerImpl::run(llvm::Module&) ()
at /usr/lib/libLLVM-4.0svn.so
#8  0x7fffc61a5d57 in LLVMTargetMachineEmit(LLVMOpaqueTargetMachine*,
LLVMOpaqueModule*, llvm::raw_pwrite_stream&, LLVMCodeGenFileType, char**) () at
/usr/lib/libLLVM-4.0svn.so
#9  0x7fffc61a6139 in LLVMTargetMachineEmitToMemoryBuffer () at
/usr/lib/libLLVM-4.0svn.so
#10 0x7fffc889e7c3 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#11 0x7fffc8814605 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#12 0x7fffc88161d2 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#13 0x7fffc8822f73 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#14 0x7fffc868ec34 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#15 0x7fffc868e9f6 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#16 0x72636454 in start_thread () at /usr/lib/libpthread.so.0
#17 0x71ad67df in clone () at /usr/lib/libc.so.6

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