[SCM] archer-tromey-threaded-dwarf: add README.archer

[tromey@sourceware.org]

The branch, archer-tromey-threaded-dwarf has been updated
       via  f46dc58dcb881b653021700a45c8f92c7b616892 (commit)
      from  e0418e92bde228efd50f5305014969ff17b58ed0 (commit)

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- Log -----------------------------------------------------------------
commit f46dc58dcb881b653021700a45c8f92c7b616892
Author: Tom Tromey <tromey@redhat.com>
Date:   Fri Feb 22 09:31:29 2013 -0700

    add README.archer

-----------------------------------------------------------------------

Summary of changes:
 README.archer |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
 create mode 100644 README.archer

First 500 lines of diff:
diff --git a/README.archer b/README.archer
new file mode 100644
index 0000000..8222685
--- /dev/null
+++ b/README.archer
@@ -0,0 +1,12 @@
+This branch has some experimental code for making psymtabs for DWARF
+in worker threads.  It has some generic changes to gdb and BFD for
+thread-awareness, and changes to the DWARF reader to make it work in
+the background.
+
+It still has a few issues.  The "complaint" system is not thread-safe
+and the BFD file descriptor cache is still somewhat broken.  There may
+be lurking problems.
+
+The biggest issue is that this didn't really help much for
+performance.  It might in some situations, but it isn't an unqualified
+win.


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