[InstCombine] add rotate narrowing tests with odd types; NFC

There's a potential miscompile here. It's unlikely in the real 
world because this transform is guarded with shouldChangeType(), 
but this test file doesn't include a standard data-layout for
some reason (despite including a custom 1), so we can see the bug. 

llvm-svn: 346966
1 file changed
tree: c33e7d8f7a0fd671bcffddbf4be4082b2343f292
  1. clang/
  2. clang-tools-extra/
  3. compiler-rt/
  4. debuginfo-tests/
  5. libclc/
  6. libcxx/
  7. libcxxabi/
  8. libunwind/
  9. lld/
  10. lldb/
  11. llgo/
  12. llvm/
  13. openmp/
  14. parallel-libs/
  15. polly/
  16. README.md
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.