Fixed the bug in merging BatchGroups back to the FreeList. Added DCHECKs
to ensure the order of BatchGroups
This reverts commit 387452ec59.
Reviewed By: cferris
Differential Revision: https://reviews.llvm.org/D144920
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================