From edc4b60fca0ee2bc33bb14acf739e8faeca26e45 Mon Sep 17 00:00:00 2001
From: Roman Divacky <rdivacky@freebsd.org>
Date: Wed, 8 Jan 2014 18:50:32 +0000
Subject: [PATCH] Force emit a relocation for @gnu_indirect_function symbols so
 that the indirect resolution works.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198780 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/MC/ELFObjectWriter.cpp |  2 +-
 test/MC/ELF/ifunc-reloc.s  | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 test/MC/ELF/ifunc-reloc.s

diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp
index 9490a9941ac..f6dbfced540 100644
--- a/lib/MC/ELFObjectWriter.cpp
+++ b/lib/MC/ELFObjectWriter.cpp
@@ -1645,7 +1645,7 @@ ELFObjectWriter::IsSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
                                                       const MCFragment &FB,
                                                       bool InSet,
                                                       bool IsPCRel) const {
-  if (DataA.getFlags() & ELF_STB_Weak)
+  if (DataA.getFlags() & ELF_STB_Weak || MCELF::GetType(DataA) == ELF::STT_GNU_IFUNC)
     return false;
   return MCObjectWriter::IsSymbolRefDifferenceFullyResolvedImpl(
                                                  Asm, DataA, FB,InSet, IsPCRel);
diff --git a/test/MC/ELF/ifunc-reloc.s b/test/MC/ELF/ifunc-reloc.s
new file mode 100644
index 00000000000..01954631cca
--- /dev/null
+++ b/test/MC/ELF/ifunc-reloc.s
@@ -0,0 +1,16 @@
+// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -r | FileCheck %s
+        .global sym
+        .type sym, @gnu_indirect_function
+alias: 
+        .global alias
+        .type alias, @function
+        .set sym, alias
+
+
+        callq sym
+
+// CHECK: Relocations [
+// CHECK-NEXT:   Section (2) .rela.text {
+// CHECK-NEXT:     0x1 R_X86_64_PC32 sym 0xFFFFFFFFFFFFFFFC
+// CHECK-NEXT:   }
+// CHECK-NEXT: ]
-- 
2.34.1