From: Rui Ueyama <ruiu@google.com>
Date: Tue, 25 Apr 2017 04:44:54 +0000 (+0000)
Subject: Define __tls_get_addr as a hidden symbol even for ARM or MIPS.
X-Git-Tag: llvmorg-5.0.0-rc1~6762
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a2a46a9532b7c6481c8bc9399b614d7ba9de5398;p=platform%2Fupstream%2Fllvm.git

Define __tls_get_addr as a hidden symbol even for ARM or MIPS.

addIgnored defines a given symbol even if there is no existing
symbol with the same name. So, even if libc provides __tls_get_addr,
we should still be able to call addIgnored.

Differential Revision: https://reviews.llvm.org/D32053

llvm-svn: 301290
---

diff --git a/lld/ELF/Writer.cpp b/lld/ELF/Writer.cpp
index e8718c2..989a55a 100644
--- a/lld/ELF/Writer.cpp
+++ b/lld/ELF/Writer.cpp
@@ -858,11 +858,8 @@ template <class ELFT> void Writer<ELFT>::addReservedSymbols() {
   // __tls_get_addr is defined by the dynamic linker for dynamic ELFs. For
   // static linking the linker is required to optimize away any references to
   // __tls_get_addr, so it's not defined anywhere. Create a hidden definition
-  // to avoid the undefined symbol error. As usual special cases are ARM and
-  // MIPS - the libc for these targets defines __tls_get_addr itself because
-  // there are no TLS optimizations for these targets.
-  if (!In<ELFT>::DynSymTab &&
-      (Config->EMachine != EM_MIPS && Config->EMachine != EM_ARM))
+  // to avoid the undefined symbol error.
+  if (!In<ELFT>::DynSymTab)
     Symtab<ELFT>::X->addIgnored("__tls_get_addr");
 
   // If linker script do layout we do not need to create any standart symbols.