[AMDGPU] Disassembler: print label names in branch instructions

Summary: Add AMDGPUSymbolizer for finding names for labels from ELF symbol table.

Reviewers: vpykhtin, artem.tamazov, tstellarAMD

Subscribers: arsenm, kzhuravl, wdng, nhaehnle, yaxunl, tony-tye

Differential Revision: https://reviews.llvm.org/D24802

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282394 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed