[Libclc-dev] buliding for arm or x86_64

[Tom Stellard]

On Mon, Aug 26, 2013 at 05:09:42PM +0800, 陳群元 wrote:
> Hi,
> 
> I am trying to build libclc for arm or x86_64 by slightly modifying the
> configure file(adding x86_64 and arm as available target).
> 
> I just bumped into some problems: It can't build all the functions
> correctly.
> 
> x86_64: cross.cl dot.cl fmax.cl, fmin.cl ... etc are ok. When it comes to
> hypot.cl, it fails.
> 
> the following are the error msg.
> 
> LLVM-CC x86_64--linux/lib/math/hypot.cl.bc
> Intrinsic name not mangled correctly for type arguments!
> double (double)* @llvm.sqrt.v2f32
> Broken module found, compilation aborted!
> 0  libLLVM-3.4svn.so 0x00002ae689a530f2
> llvm::sys::PrintStackTrace(_IO_FILE*) + 34
> 1  libLLVM-3.4svn.so 0x00002ae689a524d9
> 2  libpthread.so.0   0x00002ae68aa6fcb0
> 3  libc.so.6         0x00002ae68b1ca425 gsignal + 53
> 4  libc.so.6         0x00002ae68b1cdb8b abort + 379
> 5  libLLVM-3.4svn.so 0x00002ae689284838
> 6  libLLVM-3.4svn.so 0x00002ae689292523
> 7  libLLVM-3.4svn.so 0x00002ae689269e2f
> llvm::FPPassManager::runOnFunction(llvm::Function&) + 607
> 8  libLLVM-3.4svn.so 0x00002ae689269f67
> llvm::FunctionPassManagerImpl::run(llvm::Function&) + 167
> 9  libLLVM-3.4svn.so 0x00002ae68926a11d
> llvm::FunctionPassManager::run(llvm::Function&) + 205
> 10 clang             0x0000000000765125
> clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions
> const&, clang::TargetOptions const&, clang::LangOptions const&,
> llvm::Module*, clang::BackendAction, llvm::raw_ostream*) + 3429
> 11 clang             0x00000000007626cd
> 12 clang             0x000000000090a1b4 clang::ParseAST(clang::Sema&, bool,
> bool) + 372
> 13 clang             0x00000000005dc45a clang::FrontendAction::Execute() +
> 282
> 14 clang             0x00000000005bf6f0
> clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 352
> 15 clang             0x00000000005a54ea
> clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1722
> 16 clang             0x000000000059e850 cc1_main(char const**, char
> const**, char const*, void*) + 1232
> 17 clang             0x000000000059ce0e main + 622
> 18 libc.so.6         0x00002ae68b1b576d __libc_start_main + 237
> 19 clang             0x000000000059e211
> Stack dump:
> 0.  Program arguments: /home/mtk04454/packages/llvm-svn/bin/clang -cc1
> -triple x86_64--linux -emit-llvm-bc -disable-free -main-file-name
> hypot.cl-mrelocation-model static -mdisable-fp-elim -fmath-errno
> -masm-verbose
> -mconstructor-aliases -munwind-tables -target-cpu x86-64
> -target-linker-version 2.22 -coverage-file
> /home/mtk04454/libclc.build/x86_64--linux/lib/math/hypot.cl.bc
> -resource-dir /home/mtk04454/packages/llvm-svn/bin/../lib/clang/3.4
> -dependency-file x86_64--linux/lib/math/hypot.cl.bc.d -MT
> x86_64--linux/lib/math/hypot.cl.bc -D cl_clang_storage_class_specifiers -D
> cl_khr_fp64 -I ../libclc/generic/lib/math -I ../libclc/generic/include
> -internal-isystem /usr/local/include -internal-isystem
> /home/mtk04454/packages/llvm-svn/bin/../lib/clang/3.4/include
> -internal-externc-isystem /usr/include/x86_64-linux-gnu
> -internal-externc-isystem /include -internal-externc-isystem /usr/include
> -fdebug-compilation-dir /home/mtk04454/libclc.build -ferror-limit 19
> -fmessage-length 0 -mstackrealign -fobjc-runtime=gcc
> -fobjc-default-synthesize-properties -fdiagnostics-show-option
> -vectorize-slp -o x86_64--linux/lib/math/hypot.cl.bc -x cl
> ../libclc/generic/lib/math/hypot.cl
> 1.  <eof> parser at end of file
> 2.  Per-function optimization
> 3.  Running pass 'Module Verifier' on function '@_Z5hypotDv2_fS_'
> 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 188858)
> Target: x86_64--linux
> Thread model: posix
> 
> ===
> 
> It says it does not mangle correctly, but it does not show up at r600 and
> ptx.
> 

This looks like it might be a bug in clang.  You should file a bug at
llvm.org/bugs and post clang's debug files from /tmp

> Does anyone know how to build libclc for arm or x86_64 correctly?
> 

I'm not sure if anyone has tried this before, but it should work.  If
you remove hypot.ll from generic/lib/SOURCES and reconfigure, does
everything build correctly?

-Tom

> Thanks your kindly help very much.

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