[PATCH] D44899: [ELF] - Print LMA in _map file.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: ruiu, espindola.
Herald added subscribers: arichardson, emaste.

Currently, LLD prints VA, but not LMA in a map file.
It seems can be useful to print both to reveal layout details 
and patch implements it.

Note that gold also show LMA in a map file, but it is very limited,
for example:

  .ddd            0x000000000000104c      0x101 load address 0x000000000000303c
                  0x000000000000104c        0x1 BYTE 0x11
                  0x000000000000114d                . = (. + 0x100)
   *fill*         0x000000000000104d      0x100 
   *(.ddd.*)
  
  .text           0x0000000000001150        0x1 load address 0x0000000000003140
   *(.text.*)
   .text          0x0000000000001150        0x1 test.o
                  0x0000000000001150                _start
                  0x0000000000001150                f(int)

I think we can do better and show more detailed info like this patch does.

One more thing I thought about was to hide `LMA` column if it is known there
is no difference with `VA` column. Then `VA` could be renamed to `VA/LMA`


https://reviews.llvm.org/D44899

Files:
  ELF/MapFile.cpp
  test/ELF/linkerscript/Inputs/map-file2.s
  test/ELF/linkerscript/map-file.test
  test/ELF/linkerscript/map-file2.test
  test/ELF/map-file.s

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