[llvm-bugs] Issue 21437 in oss-fuzz: llvm:llvm-opt-fuzzer--x86_64-strength_reduce: ASSERT: (!F.ScaledReg || !F.ScaledReg->isZero()) && "Zero allocated in a scaled register

[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-2020-03-28
Type: Bug

New issue 21437 by ClusterFuzz-External: llvm:llvm-opt-fuzzer--x86_64-strength_reduce: ASSERT: (!F.ScaledReg || !F.ScaledReg->isZero()) && "Zero allocated in a scaled register
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21437

Detailed Report: https://oss-fuzz.com/testcase?key=5201610423926784

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

Crash Type: ASSERT
Crash Address: 
Crash State:
  (!F.ScaledReg || !F.ScaledReg->isZero()) && "Zero allocated in a scaled register
  LSRInstance::InsertFormula
  LSRInstance::GenerateAllReuseFormulae
  
Sanitizer: address (ASAN)

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=202003100254:202003120258

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5201610423926784

Issue filed automatically.

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