StructurizeCFG: Relax uniformity checks.

This change relaxes the checks for hasOnlyUniformBranches such that our
region is uniform if:

1. All conditional branches that are direct children are uniform.
2. And either:
  a. All sub-regions are uniform.
  b. There is one or less conditional branches among the direct

Differential Revision:

llvm-svn: 361610
2 files changed
tree: 7b4ca0329f12987f1ec31bf326adc1b14c6a1c29
  1. .arcconfig
  2. .clang-format
  3. .clang-tidy
  4. .gitignore
  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/

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