[Libclc-dev] libclc build broken on clang/llvm master

[Tom Stellard]

On Tue, Aug 27, 2013 at 12:34:38PM -0500, Aaron Watry wrote:
> Hi Tom,
> 
> I noticed that libclc is failing to build for me today using the
> latest llvm/clang code checked out from git.
> 
> Through bisecting, I was able to narrow the issue down to the
> following clang commit:
> commit 9a3d2bd6da5028567cbfda65bec886b1bcea45e2
> Author: Tom Stellard <thomas.stellard at amd.com>
> Date:   Tue Aug 27 00:55:26 2013 +0000
> 
>     R600: Add local address pointer size to DataLayout
> 
>     git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189302 91177308-0d34
> 
> 

Thanks for bisecting, this issue has been reported in the llvm bugzilla:
http://llvm.org/bugs/show_bug.cgi?id=17012

I will take a look at it.

-Tom

> By reverting that commit from clang master, I could get libclc to build again.
> 
> Is there an associated change that we need to make to libclc to handle
> the pointer size work that you did for llvm/clang, or is there
> something incomplete in the llvm/clang changes?
> 
> --Aaron
> 
> The error in full is below:
> LLVM-CC r600--/lib/shared/vstore.cl.tahiti.bc
> clang: /home/awatry/src/llvm/lib/Analysis/ScalarEvolution.cpp:1471:
> const llvm::SCEV*
> llvm::ScalarEvolution::getAddExpr(llvm::SmallVectorImpl<const
> llvm::SCEV*>&, llvm::SCEV::NoWrapFlags): Assertion
> `getEffectiveSCEVType(Ops[i]->getType()) == ETy && "SCEVAddExpr
> operand types don't match!"' failed.
> 0  libLLVM-3.4svn.so 0x00002b7a518e2a12
> llvm::sys::PrintStackTrace(_IO_FILE*) + 34
> 1  libLLVM-3.4svn.so 0x00002b7a518e26c9
> 2  libpthread.so.0   0x00002ad70371cbd0
> 3  libc.so.6         0x00002adc7feef037 gsignal + 55
> 4  libc.so.6         0x00002adc7fef2698 abort + 328
> 5  libc.so.6         0x00002adc7fee7e03
> 6  libc.so.6         0x00002adc7fee7eb2
> 7  libLLVM-3.4svn.so 0x00002b7a50fcf299
> llvm::ScalarEvolution::getAddExpr(llvm::SmallVectorImpl<llvm::SCEV
> const*>&, llvm::SCEV::NoWrapFlags) + 7321
> 8  libLLVM-3.4svn.so 0x00002b7a50f261b7
> 9  libLLVM-3.4svn.so 0x00002b7a519b8238
> 10 libLLVM-3.4svn.so 0x00002b7a519beefb
> 11 libLLVM-3.4svn.so 0x00002b7a519c0cc4
> 12 libLLVM-3.4svn.so 0x00002b7a5135afcf
> llvm::FPPassManager::runOnFunction(llvm::Function&) + 639
> 13 libLLVM-3.4svn.so 0x00002b7a5147b246
> 14 libLLVM-3.4svn.so 0x00002b7a5135ac6f
> llvm::MPPassManager::runOnModule(llvm::Module&) + 655
> 15 libLLVM-3.4svn.so 0x00002b7a5135cc57
> llvm::PassManagerImpl::run(llvm::Module&) + 199
> 16 clang             0x00000000007eaeda
> clang::EmitBackendOutput(clang::DiagnosticsEngine&,
> clang::CodeGenOptions const&, clang::TargetOptions const&,
> clang::LangOptions const&, llvm::Module*, clang::BackendAction,
> llvm::raw_ostream*) + 3498
> 17 clang             0x00000000007e87df
> 18 clang             0x000000000095dae2 clang::ParseAST(clang::Sema&,
> bool, bool) + 514
> 19 clang             0x00000000007e76e1
> clang::CodeGenAction::ExecuteAction() + 97
> 20 clang             0x0000000000666f69 clang::FrontendAction::Execute() + 265
> 21 clang             0x000000000064793a
> clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 346
> 22 clang             0x000000000062f1e2
> clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1874
> 23 clang             0x0000000000629d18 cc1_main(char const**, char
> const**, char const*, void*) + 952
> 24 clang             0x0000000000628b27 main + 7559
> 25 libc.so.6         0x00002adc7fed9ea5 __libc_start_main + 245
> 26 clang             0x00000000006297c1
> Stack dump:
> 0.    Program arguments: /usr/local/bin/clang -cc1 -triple r600--
> -emit-llvm-bc -disable-free -main-file-name vstore.cl
> -mrelocation-model static -mdisable-fp-elim -fmath-errno
> -mconstructor-aliases -target-cpu tahiti -target-linker-version 2.23.2
> -coverage-file /home/awatry/src/libclc/r600--/lib/shared/vstore.cl.tahiti.bc
> -resource-dir /usr/local/bin/../lib/clang/3.4 -dependency-file
> r600--/lib/shared/vstore.cl.tahiti.bc.d -MT
> r600--/lib/shared/vstore.cl.tahiti.bc -D
> cl_clang_storage_class_specifiers -D cl_khr_fp64 -I ./r600/lib/shared
> -I ./generic/include -c-isystem /opt/AMDAPP/include -c-isystem .
> -fno-dwarf-directory-asm -fdebug-compilation-dir
> /home/awatry/src/libclc -ferror-limit 19 -fmessage-length 211
> -mstackrealign -fobjc-runtime=gcc -fobjc-default-synthesize-properties
> -fdiagnostics-show-option -fcolor-diagnostics -vectorize-slp -o
> r600--/lib/shared/vstore.cl.tahiti.bc -x cl
> ./r600/lib/shared/vstore.cl
> 1.    <eof> parser at end of file
> 2.    Per-module optimization passes
> 3.    Running pass 'CallGraph Pass Manager' on module
> './r600/lib/shared/vstore.cl'.
> 4.    Running pass 'SLP Vectorizer' on function '@_Z7vstore2Dv2_cmPU3AS3c'
> clang: error: unable to execute command: Aborted (core dumped)
> clang: error: clang frontend command failed due to signal (use -v to
> see invocation)
> clang version 3.4 (trunk 189357) (llvm/trunk 189349)
> Target: r600--
> Thread model: posix
> clang: note: diagnostic msg: PLEASE submit a bug report to
> http://llvm.org/bugs/ and include the crash backtrace, preprocessed
> source, and associated run script.
> clang: note: diagnostic msg:
> ********************
> 
> PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
> Preprocessed source(s) and associated run script(s) are located at:
> clang: note: diagnostic msg: /tmp/vstore-8bc0dc.cl
> clang: note: diagnostic msg: /tmp/vstore-8bc0dc.sh
> clang: note: diagnostic msg:
> 
> ********************
> make: *** [r600--/lib/shared/vstore.cl.tahiti.bc] Error 254