<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - OpenCL segfaults during compilation" href="https://bugs.freedesktop.org/show_bug.cgi?id=94503#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - OpenCL segfaults during compilation" href="https://bugs.freedesktop.org/show_bug.cgi?id=94503">bug 94503</a> from <a class="email" href="mailto:twhitehead@gmail.com" title="Tyson Whitehead <twhitehead@gmail.com>"> Tyson Whitehead</a> <pre>Thanks for the heads-up Matt. I rebuilt the Debian package of mesa 11.2.0-rc3 against the Debian package of llvm 3.9~svn262954 and am pleased to say the simplified kernel I provided also now compiles for me. Unfortunately the full set of my OpenCL code I still causing a segfault. Pruning code reveals it is a different kernel though, and the backtrace is entirely different too, so progress is being made! I'm attaching a simplified version of this next kernel function. I would appreciate it if you could give it a go on your setup and see if it is segfaulting for you as well. Program received signal SIGSEGV, Segmentation fault. 0x00007ffff3bad2a0 in (anonymous namespace)::JoinVals::pruneValues (this=this@entry=0x7fffffffb8a0, Other=..., EndPoints=..., changeInstrs=changeInstrs@entry=false) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:2388 #0 0x00007ffff3bad2a0 in (anonymous namespace)::JoinVals::pruneValues (this=this@entry=0x7fffffffb8a0, Other=..., EndPoints=..., changeInstrs=changeInstrs@entry=false) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:2388 #1 0x00007ffff3bb38da in (anonymous namespace)::RegisterCoalescer::joinSubRegRanges (this=0x2386a50, this=0x2386a50, CP=..., LaneMask=8, RRange=..., LRange=...) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:2569 #2 (anonymous namespace)::RegisterCoalescer::mergeSubRangeInto (this=this@entry=0x2386a50, LI=..., ToMerge=..., LaneMask=8, CP=...) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:2622 #3 0x00007ffff3bb4a31 in (anonymous namespace)::RegisterCoalescer::joinVirtRegs ( this=this@entry=0x2386a50, CP=...) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:2688 #4 0x00007ffff3bb54a0 in (anonymous namespace)::RegisterCoalescer::joinIntervals (CP=..., this=0x2386a50) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:2734 #5 (anonymous namespace)::RegisterCoalescer::joinCopy (Again=<synthetic pointer>, CopyMI=0xb991b0, this=0x2386a50) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:1449 #6 (anonymous namespace)::RegisterCoalescer::copyCoalesceWorkList (this=this@entry=0x2386a50, CurrList=...) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:2805 #7 0x00007ffff3bb70bb in (anonymous namespace)::RegisterCoalescer::coalesceLocals ( this=this@entry=0x2386a50) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:2930 #8 0x00007ffff3bb7da8 in (anonymous namespace)::RegisterCoalescer::joinAllIntervals (this=0x2386a50) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:2956 #9 (anonymous namespace)::RegisterCoalescer::runOnMachineFunction (this=0x2386a50, fn=...) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/CodeGen/RegisterCoalescer.cpp:3006 #10 0x00007ffff39cc752 in llvm::FPPassManager::runOnFunction (this=0x238d260, F=...) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/IR/LegacyPassManager.cpp:1550 #11 0x00007ffff39cca8b in llvm::FPPassManager::runOnModule (this=0x238d260, M=...) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/IR/LegacyPassManager.cpp:1571 #12 0x00007ffff39cc3cf in (anonymous namespace)::MPPassManager::runOnModule (M=..., this=0x238cfd0) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/IR/LegacyPassManager.cpp:1627 #13 llvm::legacy::PassManagerImpl::run (this=0xa96580, M=...) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/IR/LegacyPassManager.cpp:1730 #14 0x00007ffff39cc569 in llvm::legacy::PassManager::run (this=this@entry=0x7fffffffc6a0, M=...) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/IR/LegacyPassManager.cpp:1761 #15 0x00007ffff4507ef7 in LLVMTargetMachineEmit (T=T@entry=0x239f8a0, M=M@entry=0xb42a60, OS=..., codegen=codegen@entry=LLVMObjectFile, ErrorMessage=ErrorMessage@entry=0x7fffffffc948) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/Target/TargetMachineC.cpp:206 #16 0x00007ffff4508219 in LLVMTargetMachineEmitToMemoryBuffer (T=T@entry=0x239f8a0, M=M@entry=0xb42a60, codegen=codegen@entry=LLVMObjectFile, ErrorMessage=ErrorMessage@entry=0x7fffffffc948, OutMemBuf=OutMemBuf@entry=0x7fffffffcae8) at /tmp/buildd/llvm-toolchain-snapshot-3.9~svn262954/lib/Target/TargetMachineC.cpp:230 #17 0x00007ffff6605584 in (anonymous namespace)::emit_code (tm=tm@entry=0x239f8a0, mod=mod@entry=0xb42a60, file_type=file_type@entry=LLVMObjectFile, out_buffer=out_buffer@entry=0x7fffffffcae8, r_log="test2.c:36:31: warning: double precision constant requires cl_khr_fp64, casting to single precision\ntest2.c:44:45: warning: double precision constant requires cl_khr_fp64, casting to single precision\n"...) at ../../../../../src/gallium/state_trackers/clover/llvm/invocation.cpp:621 #18 0x00007ffff660a34e in (anonymous namespace)::compile_native ( r_log="test2.c:36:31: warning: double precision constant requires cl_khr_fp64, casting to single precision\ntest2.c:44:45: warning: double precision constant requires cl_khr_fp64, casting to single precision\n"..., dump_asm=<optimized out>, processor="pitcairn", triple="amdgcn--", mod=0xb42a60) at ../../../../../src/gallium/state_trackers/clover/llvm/invocation.cpp:679 #19 clover::compile_program_llvm ( source="#line 1 \"test2.c\"\n//", '-' <repeats 111 times>, "//\nfloat foldf3_mul(const float3 a) {\n ---Type <return> to continue, or q <return> to quit--- return a.s0*a.s1*a.s2;\n}\n\nint"..., headers=..., ir=<optimized out>, target="pitcairn-amdgcn--", opts="", r_log="test2.c:36:31: warning: double precision constant requires cl_khr_fp64, casting to single precision\ntest2.c:44:45: warning: double precision constant requires cl_khr_fp64, casting to single precision\n"...) at ../../../../../src/gallium/state_trackers/clover/llvm/invocation.cpp:890 #20 0x00007ffff6600290 in clover::program::build (this=this@entry=0xb4a500, devs=..., opts=opts@entry=0xb506d0 "", headers=std::vector of length 0, capacity 0) at ../../../../../src/gallium/state_trackers/clover/core/program.cpp:63 #21 0x00007ffff65e1a98 in clBuildProgram (d_prog=0xb4a508, num_devs=1, d_devs=0x7fffffffe1f0, p_opts=<optimized out>, pfn_notify=0x0, user_data=0x0) at ../../../../../src/gallium/state_trackers/clover/api/program.cpp:184 #22 0x000000000040460f in CL_programCreate (context=0xb38018, device=0x6486b8, codes=..., options=...) at clcc.c:1466 #23 0x0000000000406651 in Action_compile (settings=...) at clcc.c:1716 #24 0x0000000000406344 in main (argc=4, argv=0x7fffffffe508) at clcc.c:1658 I've got a good feeling if this one can get resolved as well the whole thing might just compile. Thanks! -Tyson</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>