[PATCH] D50495: [DebugInfo] Do not generate duplicated label debug info if it has been processed.

[Edd Barrett via Phabricator via llvm-commits]

vext01 added a comment.

Hi HsiangKai,

Thanks for looking into this.

I've applied this diff to my LLVM clone (again, just before you DILabel codegen stuff was reverted) and rebuilt, but I can still see 0x0 `low_pc`s in the resulting label.

  $ ls -al `which clang`
  lrwxrwxrwx 1 vext01 vext01 7 Aug  1 16:16 /home/vext01/research/llvm/inst.debug/bin/clang -> clang-7
  $ ls -al `which clang-7`
  -rwxr-xr-x 1 vext01 vext01 2102557136 Aug  9 10:54 /home/vext01/research/llvm/inst.debug/bin/clan
  $ clang -O0 -g example.ll -o example.o
  warning: overriding the module target triple with x86_64-unknown-linux-gnu [-Woverride-module]
  1 warning generated.
  $ dwarfdump example.o
  ...
  < 2><0x00000041>      DW_TAG_label
                          DW_AT_name                  XXXYYYZZZ
                          DW_AT_decl_file             0x00000001 ./main.xxx
                          DW_AT_decl_line             0x00000001
                          DW_AT_low_pc                0x00000000
  ...

Do you have this change in a svn or git branch somewhere? There was some fuzz applying the diff, which might be the cause.


Repository:
  rL LLVM

https://reviews.llvm.org/D50495