[lldb] [llvm] [dsymutil] Avoid copying binary swiftmodules built from textual (PR #134719)

Tue Apr 8 09:51:53 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-linux-multistage` running on `ppc64le-clang-multistage-test` while building `lldb,llvm` at step 4 "build stage 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/76/builds/8565

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 4 (build stage 1) failure: 'ninja' (failure)
...
In file included from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/llvm/include/llvm/ADT/StringMapEntry.h:19,
                 from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/llvm/include/llvm/ADT/StringMap.h:17,
                 from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/llvm/tools/dsymutil/BinaryHolder.h:17,
                 from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/llvm/tools/dsymutil/DwarfLinkerForBinary.h:12,
                 from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/llvm/tools/dsymutil/DwarfLinkerForBinary.cpp:9:
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/llvm/include/llvm/ADT/StringRef.h: In member function ‘bool llvm::dsymutil::DwarfLinkerForBinary::AddressManager::findValidRelocsInDebugSections(const llvm::object::ObjectFile&, const llvm::dsymutil::DebugMapObject&)’:
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/llvm/include/llvm/ADT/StringRef.h:886:20: warning: ‘int __builtin_memcmp_eq(const void*, const void*, long unsigned int)’ specified size 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
     return ::memcmp(LHS.data(), RHS.data(), LHS.size()) == 0;
            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[6343/6349] Linking CXX executable bin/dsymutil
FAILED: bin/dsymutil 
: && /usr/lib64/ccache/c++ -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -Wl,-rpath-link,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/./lib  -Wl,--gc-sections tools/dsymutil/CMakeFiles/dsymutil.dir/dsymutil.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/BinaryHolder.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/CFBundle.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/DebugMap.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/DwarfLinkerForBinary.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/MachODebugMapParser.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/MachOUtils.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/Reproducer.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/RelocationMap.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/SwiftModule.cpp.o tools/dsymutil/CMakeFiles/dsymutil.dir/dsymutil-driver.cpp.o -o bin/dsymutil  -Wl,-rpath,"\$ORIGIN/../lib:/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/lib:"  lib/libLLVMAArch64CodeGen.so.21.0git  lib/libLLVMAMDGPUCodeGen.so.21.0git  lib/libLLVMARMCodeGen.so.21.0git  lib/libLLVMAVRCodeGen.so.21.0git  lib/libLLVMBPFCodeGen.so.21.0git  lib/libLLVMHexagonCodeGen.so.21.0git  lib/libLLVMLanaiCodeGen.so.21.0git  lib/libLLVMLoongArchCodeGen.so.21.0git  lib/libLLVMMipsCodeGen.so.21.0git  lib/libLLVMMSP430CodeGen.so.21.0git  lib/libLLVMNVPTXCodeGen.so.21.0git  lib/libLLVMPowerPCCodeGen.so.21.0git  lib/libLLVMRISCVCodeGen.so.21.0git  lib/libLLVMSparcCodeGen.so.21.0git  lib/libLLVMSPIRVCodeGen.so.21.0git  lib/libLLVMSystemZCodeGen.so.21.0git  lib/libLLVMVECodeGen.so.21.0git  lib/libLLVMWebAssemblyCodeGen.so.21.0git  lib/libLLVMX86CodeGen.so.21.0git  lib/libLLVMXCoreCodeGen.so.21.0git  lib/libLLVMAArch64Desc.so.21.0git  lib/libLLVMAMDGPUDesc.so.21.0git  lib/libLLVMARMDesc.so.21.0git  lib/libLLVMAVRDesc.so.21.0git  lib/libLLVMBPFDesc.so.21.0git  lib/libLLVMLoongArchDesc.so.21.0git  lib/libLLVMMipsDesc.so.21.0git  lib/libLLVMMSP430Desc.so.21.0git  lib/libLLVMNVPTXDesc.so.21.0git  lib/libLLVMPowerPCDesc.so.21.0git  lib/libLLVMRISCVDesc.so.21.0git  lib/libLLVMSparcDesc.so.21.0git  lib/libLLVMSPIRVDesc.so.21.0git  lib/libLLVMSystemZDesc.so.21.0git  lib/libLLVMVEDesc.so.21.0git  lib/libLLVMX86Desc.so.21.0git  lib/libLLVMXCoreDesc.so.21.0git  lib/libLLVMAArch64Info.so.21.0git  lib/libLLVMAMDGPUInfo.so.21.0git  lib/libLLVMARMInfo.so.21.0git  lib/libLLVMAVRInfo.so.21.0git  lib/libLLVMBPFInfo.so.21.0git  lib/libLLVMLoongArchInfo.so.21.0git  lib/libLLVMMipsInfo.so.21.0git  lib/libLLVMMSP430Info.so.21.0git  lib/libLLVMNVPTXInfo.so.21.0git  lib/libLLVMPowerPCInfo.so.21.0git  lib/libLLVMRISCVInfo.so.21.0git  lib/libLLVMSparcInfo.so.21.0git  lib/libLLVMSPIRVInfo.so.21.0git  lib/libLLVMSystemZInfo.so.21.0git  lib/libLLVMVEInfo.so.21.0git  lib/libLLVMX86Info.so.21.0git  lib/libLLVMXCoreInfo.so.21.0git  lib/libLLVMDWARFLinkerClassic.so.21.0git  lib/libLLVMDWARFLinkerParallel.so.21.0git  lib/libLLVMOption.so.21.0git  -lpthread  lib/libLLVMHexagonDesc.so.21.0git  lib/libLLVMHexagonInfo.so.21.0git  lib/libLLVMLanaiDesc.so.21.0git  lib/libLLVMLanaiInfo.so.21.0git  lib/libLLVMWebAssemblyDesc.so.21.0git  lib/libLLVMWebAssemblyInfo.so.21.0git  lib/libLLVMAsmPrinter.so.21.0git  lib/libLLVMDWARFLinker.so.21.0git  lib/libLLVMCodeGen.so.21.0git  lib/libLLVMCodeGenTypes.so.21.0git  lib/libLLVMTarget.so.21.0git  lib/libLLVMDebugInfoDWARF.so.21.0git  lib/libLLVMObject.so.21.0git  lib/libLLVMMC.so.21.0git  lib/libLLVMRemarks.so.21.0git  lib/libLLVMTargetParser.so.21.0git  lib/libLLVMSupport.so.21.0git  -Wl,-rpath-link,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/lib && :
/usr/bin/ld: tools/dsymutil/CMakeFiles/dsymutil.dir/SwiftModule.cpp.o: undefined reference to symbol '_ZN4llvm15BitstreamCursor13EnterSubBlockEjPj'
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/./lib/libLLVMBitstreamReader.so.21.0git: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
[6344/6349] Linking CXX shared library lib/libclang-cpp.so.21.0git
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/134719