From 3acdfeee1115ff2bf55ad44cae39d6360b5500df Mon Sep 17 00:00:00 2001
From: Davide Italiano <davide@freebsd.org>
Date: Tue, 29 Mar 2016 04:34:09 +0000
Subject: [PATCH] [LTO] Don't internalize if --export-dynamic is passed.

We treat that in the same way we treat shared libraries.

llvm-svn: 264698
---
 lld/ELF/LTO.cpp                           |  2 +-
 lld/test/ELF/lto/internalize-exportdyn.ll | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 lld/test/ELF/lto/internalize-exportdyn.ll

diff --git a/lld/ELF/LTO.cpp b/lld/ELF/LTO.cpp
index 528a914..76a5b06 100644
--- a/lld/ELF/LTO.cpp
+++ b/lld/ELF/LTO.cpp
@@ -106,7 +106,7 @@ void BitcodeCompiler::add(BitcodeFile &F) {
     // Shared libraries need to be handled slightly differently.
     // For now, let's be conservative and just never internalize
     // symbols when creating a shared library.
-    if (!Config->Shared && !B->isUsedInRegularObj())
+    if (!Config->Shared && !Config->ExportDynamic && !B->isUsedInRegularObj())
       InternalizedSyms.insert(GV->getName());
 
     Keep.push_back(GV);
diff --git a/lld/test/ELF/lto/internalize-exportdyn.ll b/lld/test/ELF/lto/internalize-exportdyn.ll
new file mode 100644
index 0000000..b9333c8
--- /dev/null
+++ b/lld/test/ELF/lto/internalize-exportdyn.ll
@@ -0,0 +1,19 @@
+; REQUIRES: x86
+; RUN: llvm-as %s -o %t.o
+; RUN: ld.lld -m elf_x86_64 %t.o -o %t2 --export-dynamic -save-temps
+; RUN: llvm-dis < %t2.lto.bc | FileCheck %s
+
+target triple = "x86_64-unknown-linux-gnu"
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+
+define void @_start() {
+  ret void
+}
+
+define hidden void @foo() {
+  ret void
+}
+
+; Check that _start and foo are not internalized.
+; CHECK: define void @_start()
+; CHECK: define hidden void @foo()
-- 
2.7.4