[PATCH] D25354: Treat polly as "in tree" if LLVM_EXTERNAL_POLLY_SOURCE_DIR is provided

[Hongbin Zheng via llvm-commits]

etherzhhb added a comment.

The only "tools/polly" I saw is :
./CMakeLists.txt:if (EXISTS ${LLVM_MAIN_SRC_DIR}/tools/polly/CMakeLists.txt)

I am setting LLVM_POLLY_LINK_INTO_TOOLS and running check-all


Repository:
  rL LLVM

https://reviews.llvm.org/D25354