Assertion `getActiveBits() <= 64 && "Too many bits for uint64_t"' failed. for opt -passes="loop-idiom"

[mikaelholmen]

llvm commit: 14b039c
Reproduce with:

opt -passes="loop-idiom" bbi-88060.ll -o /dev/null

Result:

opt: ../include/llvm/ADT/APInt.h:1488: uint64_t llvm::APInt::getZExtValue() const: Assertion `getActiveBits() <= 64 && "Too many bits for uint64_t"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: ../../main-github/llvm/build-all/bin/opt -passes=loop-idiom bbi-88060.ll -o /dev/null
 #0 0x00005597b3a36cf7 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (../../main-github/llvm/build-all/bin/opt+0x2f49cf7)
 #1 0x00005597b3a3484e llvm::sys::RunSignalHandlers() (../../main-github/llvm/build-all/bin/opt+0x2f4784e)
 #2 0x00005597b3a373bf SignalHandler(int) Signals.cpp:0:0
 #3 0x00007f22810b8630 __restore_rt sigaction.c:0:0
 #4 0x00007f227e7ff387 raise (/lib64/libc.so.6+0x36387)
 #5 0x00007f227e800a78 abort (/lib64/libc.so.6+0x37a78)
 #6 0x00007f227e7f81a6 __assert_fail_base (/lib64/libc.so.6+0x2f1a6)
 #7 0x00007f227e7f8252 (/lib64/libc.so.6+0x2f252)
 #8 0x00005597b458b876 (../../main-github/llvm/build-all/bin/opt+0x3a9e876)
 #9 0x00005597b45899ca (anonymous namespace)::LoopIdiomRecognize::processLoopStridedStore(llvm::Value*, llvm::SCEV const*, llvm::MaybeAlign, llvm::Value*, llvm::Instruction*, llvm::SmallPtrSetImpl<llvm::Instruction*>&, llvm::SCEVAddRecExpr const*, llvm::SCEV const*, bool, bool) LoopIdiomRecognize.cpp:0:0
#10 0x00005597b4588c83 (anonymous namespace)::LoopIdiomRecognize::processLoopStores(llvm::SmallVectorImpl<llvm::StoreInst*>&, llvm::SCEV const*, (anonymous namespace)::LoopIdiomRecognize::ForMemset) LoopIdiomRecognize.cpp:0:0
#11 0x00005597b4585bd3 (anonymous namespace)::LoopIdiomRecognize::runOnLoopBlock(llvm::BasicBlock*, llvm::SCEV const*, llvm::SmallVectorImpl<llvm::BasicBlock*>&) LoopIdiomRecognize.cpp:0:0
#12 0x00005597b457fba0 llvm::LoopIdiomRecognizePass::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (../../main-github/llvm/build-all/bin/opt+0x3a92ba0)
#13 0x00005597b3c576ad llvm::detail::PassModel<llvm::Loop, llvm::LoopIdiomRecognizePass, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (../../main-github/llvm/build-all/bin/opt+0x316a6ad)
#14 0x00005597b45a4903 std::optional<llvm::PreservedAnalyses> llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::runSinglePass<llvm::Loop, std::unique_ptr<llvm::detail::PassConcept<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, std::default_delete<llvm::detail::PassConcept<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>>>>(llvm::Loop&, std::unique_ptr<llvm::detail::PassConcept<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, std::default_delete<llvm::detail::PassConcept<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>>>&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&, llvm::PassInstrumentation&) (../../main-github/llvm/build-all/bin/opt+0x3ab7903)
#15 0x00005597b45a4557 llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::runWithoutLoopNestPasses(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (../../main-github/llvm/build-all/bin/opt+0x3ab7557)
#16 0x00005597b45a3af8 llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (../../main-github/llvm/build-all/bin/opt+0x3ab6af8)
#17 0x00005597b3c33ded llvm::detail::PassModel<llvm::Loop, llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (../../main-github/llvm/build-all/bin/opt+0x3146ded)
#18 0x00005597b45a5961 llvm::FunctionToLoopPassAdaptor::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (../../main-github/llvm/build-all/bin/opt+0x3ab8961)
#19 0x00005597b3c572dd llvm::detail::PassModel<llvm::Function, llvm::FunctionToLoopPassAdaptor, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (../../main-github/llvm/build-all/bin/opt+0x316a2dd)
#20 0x00005597b3455f64 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (../../main-github/llvm/build-all/bin/opt+0x2968f64)
#21 0x00005597b181a28d llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (../../main-github/llvm/build-all/bin/opt+0xd2d28d)
#22 0x00005597b345a34e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (../../main-github/llvm/build-all/bin/opt+0x296d34e)
#23 0x00005597b181a02d llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (../../main-github/llvm/build-all/bin/opt+0xd2d02d)
#24 0x00005597b34550f4 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (../../main-github/llvm/build-all/bin/opt+0x29680f4)
#25 0x00005597b1417c13 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (../../main-github/llvm/build-all/bin/opt+0x92ac13)
#26 0x00005597b142525c main (../../main-github/llvm/build-all/bin/opt+0x93825c)
#27 0x00007f227e7eb555 __libc_start_main (/lib64/libc.so.6+0x22555)
#28 0x00005597b1411db0 _start (../../main-github/llvm/build-all/bin/opt+0x924db0)
Abort (core dumped)

bbi-88060.ll.gz

[nikic]

Simplified test case:

define void @test(ptr %p) {
entry:
  br label %for.body

for.body:
  %iv = phi i128 [ 0, %entry ], [ %inc, %for.body ]
  %iv.trunc = trunc i128 %iv to i64
  %gep1 = getelementptr { i64, i64 }, ptr %p, i64 %iv.trunc
  %gep2 = getelementptr { i64, i64 }, ptr %p, i64 %iv.trunc, i32 1
  store i64 0, ptr %gep1
  store i64 0, ptr %gep2
  %inc = add i128 %iv, 1
  %tobool.not = icmp eq i128 %inc, 0
  br i1 %tobool.not, label %exit, label %for.body

exit:
  ret void
}

[mikaelholmen]

Thank was quick! Thanks!