From 358cb0ff7de7d3bebca063175da166ced18312cc Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Fri, 4 Jul 2014 19:31:27 +0000
Subject: [PATCH] Ignore llvm specific symbols in the LTOModule.

These are the llvm.* globals and functions.

I don't think it is possible to test this directly since llvm-lto is not
a full linker and will not report duplicated symbols, but this fixes
bootstrap with gold and lto enabled.

llvm-svn: 212354
---
 lib/LTO/LTOModule.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/LTO/LTOModule.cpp b/lib/LTO/LTOModule.cpp
index 314831ff6f8..2fa450fd9d9 100644
--- a/lib/LTO/LTOModule.cpp
+++ b/lib/LTO/LTOModule.cpp
@@ -531,6 +531,9 @@ bool LTOModule::parseSymbols(std::string &errMsg) {
   for (auto &Sym : IRFile->symbols()) {
     const GlobalValue *GV = IRFile->getSymbolGV(Sym.getRawDataRefImpl());
     uint32_t Flags = Sym.getFlags();
+    if (Flags & object::BasicSymbolRef::SF_FormatSpecific)
+      continue;
+
     bool IsUndefined = Flags & object::BasicSymbolRef::SF_Undefined;
 
     if (!GV) {