ShortLoopUnroll - bug fix.

Collect loops through a post order walk instead of a pre-order so that loops
are collected from inner loops are collected before outer surrounding ones.

Add a complex test case.

PiperOrigin-RevId: 209041057
2 files changed
tree: f126df89d1741888ca54d112cee1e64d3cafa22e
  1. include/
  2. lib/
  3. test/
  4. tools/
  5. utils/
  6. .clang-format
  7. LICENSE.TXT