[llvm] r321927 - [ORC] Yet more debugging output to diagnose test failures.

[Lang Hames via llvm-commits]

Hi Simon,

Thanks for pointing this out. I believe the issue should be fixed by
r321926. I'll keep an eye on the builder.

Cheers,
Lang.

On Sat, Jan 6, 2018 at 10:12 AM, Simon Dardis <Simon.Dardis at mips.com> wrote:

>
> Hi Lang,
>
> At least one of the failure reports you have received is from
> llvm-mips-linux builder.
>
> The cause here is that MIPS32 doesn't support 8 byte atomic operations
> natively, so
> any library/application attempting to use them have to be linked with
> libatomic. See:
>
> http://lab.llvm.org:8011/builders/llvm-mips-linux/
> builds/3418/steps/compile/logs/stdio
>
> I'm reproducing the error message here for reference:
>
> CMakeFiles/LLVMOrcJIT.dir/Core.cpp.o: In function `llvm::orc::
> AsynchronousSymbolQuery::setDefinition(llvm::orc::SymbolStringPtr,
> llvm::JITSymbol)':
> /scratch/bb-slaves/mipsswbrd002/llvm-mips-linux/
> llvm.src/lib/ExecutionEngine/Orc/Core.cpp:(.text._
> ZN4llvm3orc23AsynchronousSymbolQuery13setDefinitionENS0_
> 15SymbolStringPtrENS_9JITSymbolE+0x8a0): undefined reference to
> `__atomic_fetch_sub_8'
> CMakeFiles/LLVMOrcJIT.dir/Core.cpp.o: In function
> `std::_Rb_tree<llvm::orc::SymbolStringPtr, std::pair<llvm::orc::SymbolStringPtr
> const, llvm::JITSymbol>, std::_Select1st<std::pair<llvm::orc::SymbolStringPtr
> const, llvm::JITSymbol> >, std::less<llvm::orc::SymbolStringPtr>,
> std::allocator<std::pair<llvm::orc::SymbolStringPtr const,
> llvm::JITSymbol> > >::_M_erase(std::_Rb_tree_node<std::pair<llvm::orc::SymbolStringPtr
> const, llvm::JITSymbol> >*)':
> /scratch/bb-slaves/mipsswbrd002/llvm-mips-linux/
> llvm.src/lib/ExecutionEngine/Orc/Core.cpp:(.text._ZNSt8_Rb_
> treeIN4llvm3orc15SymbolStringPtrESt4pairIKS2_NS0_
> 9JITSymbolEESt10_Select1stIS6_ESt4lessIS2_ESaIS6_EE8_M_
> eraseEPSt13_Rb_tree_nodeIS6_E[_ZNSt8_Rb_treeIN4llvm3orc15SymbolStringP
> trESt4pairIKS2_NS0_9JITSymbolEESt10_Select1stIS6_ESt4lessIS2_ESaIS6_EE8_M_
> eraseEPSt13_Rb_tree_nodeIS6_E]+0x94): undefined reference to
> `__atomic_fetch_sub_8'
> clang-3.8: error: linker command failed with exit code 1 (use -v to see
> invocation)
>
> Thanks,
> Simon
> ________________________________________
> From: llvm-commits [llvm-commits-bounces at lists.llvm.org] on behalf of
> Lang Hames via llvm-commits [llvm-commits at lists.llvm.org]
> Sent: Saturday, January 6, 2018 5:19 AM
> To: llvm-commits at lists.llvm.org
> Subject: [llvm] r321927 - [ORC] Yet more debugging output to diagnose test
> failures.
>
> Author: lhames
> Date: Fri Jan  5 21:19:07 2018
> New Revision: 321927
>
> URL: http://llvm.org/viewvc/llvm-project?rev=321927&view=rev
> Log:
> [ORC] Yet more debugging output to diagnose test failures.
>
> Modified:
>     llvm/trunk/lib/ExecutionEngine/Orc/Core.cpp
>
> Modified: llvm/trunk/lib/ExecutionEngine/Orc/Core.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/
> ExecutionEngine/Orc/Core.cpp?rev=321927&r1=321926&r2=321927&view=diff
> ============================================================
> ==================
> --- llvm/trunk/lib/ExecutionEngine/Orc/Core.cpp (original)
> +++ llvm/trunk/lib/ExecutionEngine/Orc/Core.cpp Fri Jan  5 21:19:07 2018
> @@ -46,7 +46,10 @@ void AsynchronousSymbolQuery::setDefinit
>      << "OutstandingResolutions = " << OutstandingResolutions << "\n"
>      << "OutstandingFinalizations = " << OutstandingFinalizations << "\n"
>      << "Symbols.size() = " << Symbols.size() << "\n"
> -    << "Symbols.count(Name) = " << Symbols.count(Name) << "\n";
> +    << "Symbols.count(Name) = " << Symbols.count(Name) << "\n"
> +    << "Callback size = " << sizeof(SymbolsResolvedCallback) << "\n"
> +    << "Callback offset = "
> +    << (size_t)((char*)&NotifySymbolsResolved - (char*)this) << "\n";
>
>    assert(!Symbols.count(Name) &&
>           "Symbol has already been assigned an address");
>
>
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