From 0d5e1b753e49f993832844eb2954cf62f1df1444 Mon Sep 17 00:00:00 2001
From: Simon Atanasyan <simon@atanasyan.com>
Date: Wed, 20 Jan 2016 18:59:45 +0000
Subject: [PATCH] [ELF] Do not keep STT_FILE symbols in the symbol table

STT_FILE symbols usually contain source file names. It is redundant
to keep this information in the output file.

llvm-svn: 258331
---
 lld/ELF/OutputSections.cpp |  2 +-
 lld/test/ELF/file-sym.s    | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 lld/test/ELF/file-sym.s

diff --git a/lld/ELF/OutputSections.cpp b/lld/ELF/OutputSections.cpp
index b885601e1ed0..62ad8e24752c 100644
--- a/lld/ELF/OutputSections.cpp
+++ b/lld/ELF/OutputSections.cpp
@@ -1411,7 +1411,7 @@ template <class ELFT> void StringTableSection<ELFT>::writeTo(uint8_t *Buf) {
 template <class ELFT>
 bool elf2::shouldKeepInSymtab(const ObjectFile<ELFT> &File, StringRef SymName,
                               const typename ELFFile<ELFT>::Elf_Sym &Sym) {
-  if (Sym.getType() == STT_SECTION)
+  if (Sym.getType() == STT_SECTION || Sym.getType() == STT_FILE)
     return false;
 
   InputSectionBase<ELFT> *Sec = File.getSection(Sym);
diff --git a/lld/test/ELF/file-sym.s b/lld/test/ELF/file-sym.s
new file mode 100644
index 000000000000..eddb461490c6
--- /dev/null
+++ b/lld/test/ELF/file-sym.s
@@ -0,0 +1,12 @@
+# Check that we do not keep STT_FILE symbols in the symbol table
+
+# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
+# RUN: ld.lld %t.o -shared -o %t.so
+# RUN: llvm-readobj -symbols %t.so | FileCheck %s
+
+# REQUIRES: x86
+
+# CHECK-NOT: xxx
+
+.file "xxx"
+.file ""