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Author SHA1 Message Date
Michael J. Spencer 8222f902ca [ELF] Read the call graph profile from object files. 
This uses the call graph profile embedded in the object files to construct the call graph.

This is read from a SHT_LLVM_CALL_GRAPH_PROFILE (0x6fff4c02) section as (uint32_t, uint32_t, uint64_t) tuples as (from symbol index, to symbol index, weight).

Differential Revision: https://reviews.llvm.org/D45850

llvm-svn: 343552
 2018-10-02 00:17:15 +00:00