alexfh wrote:
We see another crash in SLP vectorizer after this commit, which reproduces also after d0ea176ccea8bdcd60aacc2753734294b9eec71f:
```
assert.h assertion failed at llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:20860 in auto llvm::slpvectorizer::BoUpSLP::BlockScheduling::tryScheduleBundle(ArrayRef<Value *>, BoUpSLP *, const InstructionsState &, const EdgeInfo &)::(anonymous class)::operator()(bool, ScheduleBundle &) const: Picked->isReady() && "must be ready to schedule"
*** Check failure stack trace: *** @ 0x55a81b288a24 absl::log_internal::LogMessage::SendToLog() @ 0x55a81b2889d8 absl::log_internal::LogMessage::Flush()
@ 0x55a81b4fea04 __assert_fail @ 0x55a81a0bab9b llvm::slpvectorizer::BoUpSLP::BlockScheduling::tryScheduleBundle()::$_1::operator()() @ 0x55a81a0323a6 llvm::slpvectorizer::BoUpSLP::buildTreeRec()
@ 0x55a81a04b64f llvm::slpvectorizer::BoUpSLP::transformNodes() @ 0x55a81a0887ce llvm::SLPVectorizerPass::vectorizeStoreChain()
@ 0x55a81a08a974 llvm::SLPVectorizerPass::vectorizeStores()::$_0::operator()() @ 0x55a81a08998b llvm::SLPVectorizerPass::vectorizeStores()
@ 0x55a81a084ef9 llvm::SLPVectorizerPass::vectorizeStoreChains() @ 0x55a81a083270 llvm::SLPVectorizerPass::runImpl()
@ 0x55a81a0827fd llvm::SLPVectorizerPass::run() @ 0x55a81af32519 llvm::PassManager<>::run()
@ 0x55a81af34f5d llvm::ModuleToFunctionPassAdaptor::run() @ 0x55a81af318d9 llvm::PassManager<>::run()
@ 0x55a8158620b0 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline() @ 0x55a815858664 clang::emitBackendOutput()
@ 0x55a815532338 clang::CodeGenAction::ExecuteAction() @ 0x55a8160fa6ca clang::FrontendAction::Execute()
@ 0x55a81607576d clang::CompilerInstance::ExecuteAction() @ 0x55a81552bfbf clang::ExecuteCompilerInvocation()
@ 0x55a81552012f cc1_main()
@ 0x55a81551d4d6 ExecuteCC1Tool()
@ 0x55a816226a1e llvm::function_ref<>::callback_fn<>()
@ 0x55a81b0eb259 llvm::CrashRecoveryContext::RunSafely()
@ 0x55a816225f24 clang::driver::CC1Command::Execute()
@ 0x55a8161e75d3 clang::driver::Compilation::ExecuteCommand()
@ 0x55a8161e784f clang::driver::Compilation::ExecuteJobs() @ 0x55a816201760 clang::driver::Driver::ExecuteCompilation()
@ 0x55a81551cbcb clang_main() @ 0x55a81551b274 main
```
The test case is being reduced.
https://github.com/llvm/llvm-project/pull/153393