[PATCH] [ELF] Implement --stats

[Rui Ueyama]

LGTM


REPOSITORY
  rL LLVM

================
Comment at: lib/Driver/GnuLdDriver.cpp:181
@@ +180,3 @@
+    diag << "total time in link " << t.getProcessTime() << "\n";
+    diag << "data size " << t.getMemUsed() << "\n";
+  }
----------------
total -> Total

"data size" may be confusing -- this can be read as the total number of bytes read from disk, for example. Needs a bit of wordsmithing.

http://reviews.llvm.org/D7657

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