[all-commits] [llvm/llvm-project] 5ea611: [BPF] Support weak global variables for BTF

[yonghong-song via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5ea611daf9cb51ba3d6492e50a6b568348fb62c0
      https://github.com/llvm/llvm-project/commit/5ea611daf9cb51ba3d6492e50a6b568348fb62c0
  Author: Yonghong Song <yhs at fb.com>
  Date:   2019-12-07 (Sat, 07 Dec 2019)

  Changed paths:
    M llvm/lib/Target/BPF/BTFDebug.cpp
    A llvm/test/CodeGen/BPF/BTF/weak-global-2.ll
    A llvm/test/CodeGen/BPF/BTF/weak-global.ll

  Log Message:
  -----------
  [BPF] Support weak global variables for BTF

Generate types for global variables with "weak" attribute.
Keep allocation scope the same for both weak and non-weak
globals as ELF symbol table can determine whether a global
symbol is weak or not.

Differential Revision: https://reviews.llvm.org/D71162