[PATCH] D30724: Dont emit Mapping symbols for Non allocatable sections.

[Shankar Easwaran via Phabricator via llvm-commits]

shankare added a comment.

It looks like gcc doesnot purely go by whether section has data or not. It also checks for section permissions.

For example :-

  $ cat b.s
          .section        .foobar,"ax",%progbits
           .word 32
  
  $ readelf -s b.o
  
  Symbol table '.symtab' contains 7 entries:
     Num:    Value  Size Type    Bind   Vis      Ndx Name
       0: 00000000     0 NOTYPE  LOCAL  DEFAULT  UND
       1: 00000000     0 SECTION LOCAL  DEFAULT    1
       2: 00000000     0 SECTION LOCAL  DEFAULT    2
       3: 00000000     0 SECTION LOCAL  DEFAULT    3
       4: 00000000     0 SECTION LOCAL  DEFAULT    4
       5: 00000000     0 NOTYPE  LOCAL  DEFAULT    4 $d
       6: 00000000     0 SECTION LOCAL  DEFAULT    5

Thanks for the review.


Repository:
  rL LLVM

https://reviews.llvm.org/D30724