[InstCombine] prevent crashing with invalid extractelement index

This was found/reduced from a fuzzer report:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14956

llvm-svn: 361729
2 files changed
tree: 16cae3c5100c14b1a66b34e7c3339589cab97d5a
  1. .arcconfig
  2. .clang-format
  3. .clang-tidy
  4. .gitignore
  5. README.md
  6. clang-tools-extra/
  7. clang/
  8. compiler-rt/
  9. debuginfo-tests/
  10. libclc/
  11. libcxx/
  12. libcxxabi/
  13. libunwind/
  14. lld/
  15. lldb/
  16. llgo/
  17. llvm/
  18. openmp/
  19. parallel-libs/
  20. polly/
  21. pstl/
README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.