[PATCH] D50803: [gold-plugin] Add "obj-files" option

[Bill Wendling via Phabricator via llvm-commits]

void added a comment.

In https://reviews.llvm.org/D50803#1201353, @pcc wrote:

> Doesn't the `obj-path` option already do what you want here?


I don't believe so, or at least it's not exactly the behavior I would like. The behavior I see with `save-temps` that I wanted to replicate with this option is that `save-temps` outputs the object code in this way:

  $ ld.gold -plugin LLVMgold.so -plugin-opt=save-temps -r -o x.o a.o b.o
  $ ls
  x.o x.o1 x.o2 a.o b.o

Where `x.o1` is the object code for `a.o` and `x.o2` is the object code for `b.o`. Retaining this ordering is important to my use case---i.e., live patching the Linux kernel <https://en.wikipedia.org/wiki/Kpatch>. From what I can tell, `obj-path` outputs `.o` files to temporary files with no special ordering to the filenames.


Repository:
  rL LLVM

https://reviews.llvm.org/D50803