[llvm-bugs] Issue 64794 in oss-fuzz: llvm:llvm-isel-fuzzer--x86_64-O2: ASSERT: LRegs.size() == 1 && "Can't handle this yet!"

[ClusterFuzz-External via monorail via llvm-bugs]

Status: New
Owner: ----
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Labels: ClusterFuzz Stability-Memory-AddressSanitizer Reproducible Engine-libfuzzer OS-Linux Proj-llvm Reported-2023-12-07
Type: Bug

New issue 64794 by ClusterFuzz-External: llvm:llvm-isel-fuzzer--x86_64-O2: ASSERT: LRegs.size() == 1 && "Can't handle this yet!"
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=64794

Detailed Report: https://oss-fuzz.com/testcase?key=4610877533585408

Project: llvm
Fuzzing Engine: libFuzzer
Fuzz Target: llvm-isel-fuzzer--x86_64-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: ASSERT
Crash Address: 
Crash State:
  LRegs.size() == 1 && "Can't handle this yet!"
  ScheduleDAGRRList::PickNodeToScheduleBottomUp
  ScheduleDAGRRList::Schedule
  
Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202312050608:202312060616

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=4610877533585408

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally.
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