[libc-commits] [libc] [llvm] [LLVM] Port 'llvm-gpu-loader' to use LLVMOffload (PR #162739)

Tue Feb 24 08:17:50 PST 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-nvptx64-nvidia-ubuntu` running on `as-builder-7` while building `libc,llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/160/builds/33422

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h:326:45:   required from ‘llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::match_combine_or<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> > >, 54, false, llvm::VPWidenRecipe, llvm::VPReplicateRecipe, llvm::VPWidenCastRecipe, llvm::VPInstruction>::match(const llvm::VPRecipeBase*) const::<lambda(auto:34, unsigned int)> [with auto:34 = llvm::VPlanPatternMatch::Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>]’
/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h:354:14:   required from ‘bool llvm::VPlanPatternMatch::Recipe_match<Ops_t, Opcode, Commutative, RecipeTys>::all_of_tuple_elements(std::index_sequence<Idx ...>, Fn) const [with Fn = llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::match_combine_or<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> > >, 54, false, llvm::VPWidenRecipe, llvm::VPReplicateRecipe, llvm::VPWidenCastRecipe, llvm::VPInstruction>::match(const llvm::VPRecipeBase*) const::<lambda(auto:34, unsigned int)>; long unsigned int ...Is = {0, 1}; Ops_t = std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::match_combine_or<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> > >; unsigned int Opcode = 54; bool Commutative = false; RecipeTys = {llvm::VPWidenRecipe, llvm::VPReplicateRecipe, llvm::VPWidenCastRecipe, llvm::VPInstruction}; std::index_sequence<Idx ...> = std::integer_sequence<long unsigned int, 0, 1>]’
/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h:325:30:   required from ‘bool llvm::VPlanPatternMatch::Recipe_match<Ops_t, Opcode, Commutative, RecipeTys>::match(const llvm::VPRecipeBase*) const [with Ops_t = std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::match_combine_or<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> > >; unsigned int Opcode = 54; bool Commutative = false; RecipeTys = {llvm::VPWidenRecipe, llvm::VPReplicateRecipe, llvm::VPWidenCastRecipe, llvm::VPInstruction}]’
/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h:718:43:   required from ‘bool llvm::VPlanPatternMatch::Cmp_match<Op0_t, Op1_t, Opcodes>::match(const llvm::VPRecipeBase*) const [with Op0_t = llvm::VPlanPatternMatch::Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>; Op1_t = llvm::VPlanPatternMatch::match_combine_or<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >; unsigned int ...Opcodes = {54}]’
/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h:714:25:   required from ‘bool llvm::VPlanPatternMatch::Cmp_match<Op0_t, Op1_t, Opcodes>::match(const llvm::VPValue*) const [with Op0_t = llvm::VPlanPatternMatch::Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>; Op1_t = llvm::VPlanPatternMatch::match_combine_or<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >; unsigned int ...Opcodes = {54}]’
/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h:237:19:   required from ‘bool llvm::VPlanPatternMatch::match_combine_or<LTy, RTy>::match(ITy*) const [with ITy = llvm::VPValue; LTy = llvm::VPlanPatternMatch::Cmp_match<llvm::VPlanPatternMatch::Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::match_combine_or<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 54>; RTy = llvm::VPlanPatternMatch::Cmp_match<llvm::VPlanPatternMatch::match_combine_or<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, llvm::VPlanPatternMatch::Recipe_match<std::tuple<llvm::VPlanPatternMatch::class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, llvm::VPlanPatternMatch::Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>, 54>]’
/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h:23:17:   required from ‘bool llvm::VPlanPatternMatch::match(Val*, const Pattern&) [with Val = llvm::VPValue; Pattern = match_combine_or<Cmp_match<Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>, match_combine_or<Recipe_match<std::tuple<Recipe_match<std::tuple<class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, Recipe_match<std::tuple<class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 54>, Cmp_match<match_combine_or<Recipe_match<std::tuple<Recipe_match<std::tuple<class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, 81, false, llvm::VPInstruction>, Recipe_match<std::tuple<class_match<llvm::VPValue> >, 75, false, llvm::VPInstruction> >, Recipe_match<std::tuple<>, 100, false, llvm::VPInstruction>, 54> >]’
/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/lib/Transforms/Vectorize/VPlanVerifier.cpp:163:14:   required from here
/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/lib/Transforms/Vectorize/VPlanPatternMatch.h:353:61: warning: parameter ‘P’ set but not used [-Wunused-but-set-parameter]
47.261 [716/13/2175] Linking CXX executable bin/llvm-gpu-loader
FAILED: bin/llvm-gpu-loader 
: && /usr/bin/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-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fuse-ld=gold     -Wl,--gc-sections tools/llvm-gpu-loader/CMakeFiles/llvm-gpu-loader.dir/llvm-gpu-loader.cpp.o -o bin/llvm-gpu-loader  -Wl,-rpath,"\$ORIGIN/../lib:/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/build/lib:"  lib/libLLVMOption.so.23.0git  lib/libLLVMObject.so.23.0git  lib/libLLVMTargetParser.so.23.0git  lib/libLLVMSupport.so.23.0git  -Wl,-rpath-link,/home/buildbot/worker/as-builder-7/llvm-nvptx64-nvidia-ubuntu/build/lib && :
tools/llvm-gpu-loader/CMakeFiles/llvm-gpu-loader.dir/llvm-gpu-loader.cpp.o:llvm-gpu-loader.cpp:function main:(.text.startup.main+0x182): error: undefined reference to 'llvm::identify_magic(llvm::StringRef)'
tools/llvm-gpu-loader/CMakeFiles/llvm-gpu-loader.dir/llvm-gpu-loader.cpp.o:llvm-gpu-loader.cpp:function main:(.text.startup.main+0x859): error: undefined reference to 'llvm::ELF::convertEMachineToArchName(unsigned short)'
collect2: error: ld returned 1 exit status
47.373 [716/4/2184] Linking CXX shared library lib/libLLVMObjectYAML.so.23.0git
55.270 [716/2/2186] Building CXX object lib/CodeGen/AsmPrinter/CMakeFiles/LLVMAsmPrinter.dir/AsmPrinter.cpp.o
56.275 [716/1/2187] Building CXX object lib/LTO/CMakeFiles/LLVMLTO.dir/LTO.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/162739