Revert r353424 "[llvm-ar][libObject] Fix relative paths when nesting thin archives."

This broke the Chromium build on Windows, see https://crbug.com/930058

> Summary:
> When adding one thin archive to another, we currently chop off the relative path to the flattened members. For instance, when adding `foo/child.a` (which contains `x.txt`) to `parent.a`, whe
> lattening it we should add it as `foo/x.txt` (which exists) instead of `x.txt` (which does not exist).
>
> As a note, this also undoes the `IsNew` parameter of handling relative paths in r288280. The unit test there still passes.
>
> This was reported as part of testing the kernel build with llvm-ar: https://patchwork.kernel.org/patch/10767545/ (see the second point).
>
> Reviewers: mstorsjo, pcc, ruiu, davide, david2050
>
> Subscribers: hiraditya, llvm-commits
>
> Tags: #llvm
>
> Differential Revision: https://reviews.llvm.org/D57842

This reverts commit bf990ab5aab03aa0aac53c9ef47ef264307804ed.

llvm-svn: 353507

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/test/tools/llvm-ar/flatten-thin-archive.test b/llvm/test/tools/llvm-ar/flatten-thin-archive.test
index a80edd9d50c..430f48fe7c4 100644
--- a/llvm/test/tools/llvm-ar/flatten-thin-archive.test
+++ b/llvm/test/tools/llvm-ar/flatten-thin-archive.test
@@ -6,7 +6,7 @@
 # flattened members appearing together.
 
 RUN: touch %t-a.txt %t-b.txt %t-c.txt %t-d.txt %t-e.txt
-RUN: rm -f %t-a-plus-b.a %t-d-plus-e.a %t.a
+RUN: rm -f %t-a-plus-b.a %t.a
 RUN: llvm-ar rcsT %t-a-plus-b.a %t-a.txt %t-b.txt
 RUN: llvm-ar rcs %t-d-plus-e.a %t-d.txt %t-e.txt
 RUN: llvm-ar rcsT %t.a %t-a-plus-b.a %t-c.txt %t-d-plus-e.a