[all-commits] [llvm/llvm-project] ccbf28: [BOLT][DWARF] Handle zero size DW_TAG_inlined_subr...

[Alexander Yermolovich via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ccbf28b09d605d91b6bd10e3d033168c6048beb4
      https://github.com/llvm/llvm-project/commit/ccbf28b09d605d91b6bd10e3d033168c6048beb4
  Author: Alexander Yermolovich <ayermolo at fb.com>
  Date:   2022-08-17 (Wed, 17 Aug 2022)

  Changed paths:
    M bolt/include/bolt/Rewrite/DWARFRewriter.h
    M bolt/lib/Rewrite/DWARFRewriter.cpp
    A bolt/test/X86/dwarf4-size-0-inlined_subroutine.s

  Log Message:
  -----------
  [BOLT][DWARF] Handle zero size DW_TAG_inlined_subroutine

We were resetting DW_AT_low_pc to zero when DW_AT_high_pc was zero, or
DW_AT_low_pc == DW_AT_high_pc. This resulted in LLDB to print error "adding
range [0x0-0x0) which has a base that is less than the function's low PC".

Changed it so that when this case arises we set DW_AT_low_pc to the start
address.

Reviewed By: rafauler

Differential Revision: https://reviews.llvm.org/D132059