[PATCH] [X86][ELF] Correct relocation for DWARF TLS references

[Paul Robinson]

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D8011

Files:
  llvm/trunk/lib/Target/X86/X86TargetMachine.cpp
  llvm/trunk/lib/Target/X86/X86TargetObjectFile.cpp
  llvm/trunk/lib/Target/X86/X86TargetObjectFile.h
  llvm/trunk/test/DebugInfo/X86/tls.ll

Index: llvm/trunk/test/DebugInfo/X86/tls.ll
===================================================================
--- llvm/trunk/test/DebugInfo/X86/tls.ll
+++ llvm/trunk/test/DebugInfo/X86/tls.ll
@@ -7,6 +7,12 @@
 ; RUN: llc %s -o - -filetype=asm -O0 -mtriple=x86_64-unknown-linux-gnu -split-dwarf=Enable \
 ; RUN:   | FileCheck --check-prefix=CHECK --check-prefix=FISSION %s
 
+; RUN: llc %s -o - -filetype=asm -O0 -mtriple=x86_64-scei-ps4 \
+; RUN:   | FileCheck --check-prefix=CHECK --check-prefix=SINGLE --check-prefix=SINGLE-64 %s
+
+; RUN: llc %s -o - -filetype=asm -O0 -mtriple=x86_64-unknown-freebsd \
+; RUN:   | FileCheck --check-prefix=CHECK --check-prefix=SINGLE --check-prefix=SINGLE-64 %s
+
 ; FIXME: add relocation and DWARF expression support to llvm-dwarfdump & use
 ; that here instead of raw assembly printing
 
Index: llvm/trunk/lib/Target/X86/X86TargetObjectFile.cpp
===================================================================
--- llvm/trunk/lib/Target/X86/X86TargetObjectFile.cpp
+++ llvm/trunk/lib/Target/X86/X86TargetObjectFile.cpp
@@ -62,18 +62,17 @@
   return MCBinaryExpr::CreateAdd(Res, Off, getContext());
 }
 
+const MCExpr *X86ELFTargetObjectFile::getDebugThreadLocalSymbol(
+    const MCSymbol *Sym) const {
+  return MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_DTPOFF, getContext());
+}
+
 void
 X86LinuxTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM) {
   TargetLoweringObjectFileELF::Initialize(Ctx, TM);
   InitializeELF(TM.Options.UseInitArray);
 }
 
-const MCExpr *
-X86LinuxTargetObjectFile::getDebugThreadLocalSymbol(
-    const MCSymbol *Sym) const {
-  return MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_DTPOFF, getContext());
-}
-
 const MCExpr *X86WindowsTargetObjectFile::getExecutableRelativeSymbol(
     const ConstantExpr *CE, Mangler &Mang, const TargetMachine &TM) const {
   // We are looking for the difference of two symbols, need a subtraction
Index: llvm/trunk/lib/Target/X86/X86TargetMachine.cpp
===================================================================
--- llvm/trunk/lib/Target/X86/X86TargetMachine.cpp
+++ llvm/trunk/lib/Target/X86/X86TargetMachine.cpp
@@ -40,7 +40,7 @@
   if (TT.isOSLinux())
     return make_unique<X86LinuxTargetObjectFile>();
   if (TT.isOSBinFormatELF())
-    return make_unique<TargetLoweringObjectFileELF>();
+    return make_unique<X86ELFTargetObjectFile>();
   if (TT.isKnownWindowsMSVCEnvironment())
     return make_unique<X86WindowsTargetObjectFile>();
   if (TT.isOSBinFormatCOFF())
Index: llvm/trunk/lib/Target/X86/X86TargetObjectFile.h
===================================================================
--- llvm/trunk/lib/Target/X86/X86TargetObjectFile.h
+++ llvm/trunk/lib/Target/X86/X86TargetObjectFile.h
@@ -38,13 +38,17 @@
                                 int64_t Offset) const override;
   };
 
+  /// \brief This implemenatation is used for X86 ELF targets that don't
+  /// have a further specialization.
+  class X86ELFTargetObjectFile : public TargetLoweringObjectFileELF {
+    /// \brief Describe a TLS variable address within debug info.
+    const MCExpr *getDebugThreadLocalSymbol(const MCSymbol *Sym) const override;
+  };
+
   /// X86LinuxTargetObjectFile - This implementation is used for linux x86
   /// and x86-64.
-  class X86LinuxTargetObjectFile : public TargetLoweringObjectFileELF {
+  class X86LinuxTargetObjectFile : public X86ELFTargetObjectFile {
     void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
-
-    /// \brief Describe a TLS variable address within debug info.
-    const MCExpr *getDebugThreadLocalSymbol(const MCSymbol *Sym) const override;
   };
 
   /// \brief This implementation is used for Windows targets on x86 and x86-64.

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