[PGO]: Implement Func PGO name string compression
authorXinliang David Li <davidxl@google.com>
Thu, 31 Dec 2015 07:57:16 +0000 (07:57 +0000)
committerXinliang David Li <davidxl@google.com>
Thu, 31 Dec 2015 07:57:16 +0000 (07:57 +0000)
This is part of the effort/prepration to reduce the size
instr-pgo (object, binary, memory footprint, and raw data).

The functionality is currently off by default and not yet
used by any clients.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256667 91177308-0d34-0410-b5e6-96231b3b80d8


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