From 0344874921e292cae4bd8b788eed1d782280f142 Mon Sep 17 00:00:00 2001
From: Bill Wendling <isanbard@gmail.com>
Date: Mon, 15 Mar 2010 19:04:37 +0000
Subject: [PATCH] Place the LSDA into the TEXT section for x86 Darwin. If the
 global it's pointing to is local to the translation unit, we need to place
 fill the value of that symbol into the non-lazy pointer.

This should conclude all Darwin changes for placing the LSDA into the TEXT
section. There is some cleanup to do. I.e., there's no longer a special need for
target-specific code here. But that can come later.

llvm-svn: 98564
---
 llvm/lib/Target/X86/X86ISelLowering.cpp     | 47 ++-------------------
 llvm/lib/Target/X86/X86TargetObjectFile.cpp | 14 ++++++
 llvm/lib/Target/X86/X86TargetObjectFile.h   | 14 ++++--
 3 files changed, 29 insertions(+), 46 deletions(-)

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 06642a9a77c7..e810cea17a01 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -70,53 +70,14 @@ Disable16Bit("disable-16bit", cl::Hidden,
 static SDValue getMOVL(SelectionDAG &DAG, DebugLoc dl, EVT VT, SDValue V1,
                        SDValue V2);
 
-// FIXME: This is for a test.
-static cl::opt<bool>
-EnableX86EHTest("enable-x86-eh-test", cl::Hidden);
-
-namespace llvm {
-  class X86_test_MachoTargetObjectFile : public TargetLoweringObjectFileMachO {
-  public:
-    virtual void Initialize(MCContext &Ctx, const TargetMachine &TM) {
-      TargetLoweringObjectFileMachO::Initialize(Ctx, TM);
-
-      // Exception Handling.
-      LSDASection = getMachOSection("__TEXT", "__gcc_except_tab", 0,
-                                    SectionKind::getReadOnlyWithRel());
-    }
-
-    virtual unsigned getTTypeEncoding() const {
-      return DW_EH_PE_indirect | DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-    }
-  };
-
-  class X8664_test_MachoTargetObjectFile : public X8664_MachoTargetObjectFile {
-  public:
-    virtual void Initialize(MCContext &Ctx, const TargetMachine &TM) {
-      TargetLoweringObjectFileMachO::Initialize(Ctx, TM);
-
-      // Exception Handling.
-      LSDASection = getMachOSection("__TEXT", "__gcc_except_tab", 0,
-                                    SectionKind::getReadOnlyWithRel());
-    }
-
-    virtual unsigned getTTypeEncoding() const {
-      return DW_EH_PE_indirect | DW_EH_PE_pcrel | DW_EH_PE_sdata4;
-    }
-  };
-}
-
 static TargetLoweringObjectFile *createTLOF(X86TargetMachine &TM) {
   switch (TM.getSubtarget<X86Subtarget>().TargetType) {
   default: llvm_unreachable("unknown subtarget type");
   case X86Subtarget::isDarwin:
-    // FIXME: This is for an EH test.
-    if (EnableX86EHTest) {
-      if (TM.getSubtarget<X86Subtarget>().is64Bit())
-        return new X8664_test_MachoTargetObjectFile();
-      else
-        return new X86_test_MachoTargetObjectFile();
-    }
+    if (TM.getSubtarget<X86Subtarget>().is64Bit())
+      return new X8664_MachoTargetObjectFile();
+    else
+      return new X86_MachoTargetObjectFile();
 
     if (TM.getSubtarget<X86Subtarget>().is64Bit())
       return new X8664_MachoTargetObjectFile();
diff --git a/llvm/lib/Target/X86/X86TargetObjectFile.cpp b/llvm/lib/Target/X86/X86TargetObjectFile.cpp
index f49153b19d80..755967bd24fa 100644
--- a/llvm/lib/Target/X86/X86TargetObjectFile.cpp
+++ b/llvm/lib/Target/X86/X86TargetObjectFile.cpp
@@ -12,12 +12,26 @@
 #include "X86TargetMachine.h"
 #include "llvm/CodeGen/MachineModuleInfoImpls.h"
 #include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCSectionMachO.h"
 #include "llvm/Target/Mangler.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/Support/Dwarf.h"
 using namespace llvm;
 using namespace dwarf;
 
+void X86_MachoTargetObjectFile::Initialize(MCContext &Ctx,
+                                           const TargetMachine &TM) {
+  TargetLoweringObjectFileMachO::Initialize(Ctx, TM);
+
+  // Exception Handling.
+  LSDASection = getMachOSection("__TEXT", "__gcc_except_tab", 0,
+                                SectionKind::getReadOnlyWithRel());
+}
+
+unsigned X86_MachoTargetObjectFile::getTTypeEncoding() const {
+  return DW_EH_PE_indirect | DW_EH_PE_pcrel | DW_EH_PE_sdata4;
+}
+
 const MCExpr *X8664_MachoTargetObjectFile::
 getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
                                MachineModuleInfo *MMI, unsigned Encoding,
diff --git a/llvm/lib/Target/X86/X86TargetObjectFile.h b/llvm/lib/Target/X86/X86TargetObjectFile.h
index 8fef4d192bbd..2ae7631ef57a 100644
--- a/llvm/lib/Target/X86/X86TargetObjectFile.h
+++ b/llvm/lib/Target/X86/X86TargetObjectFile.h
@@ -17,11 +17,19 @@
 namespace llvm {
   class X86TargetMachine;
 
-  /// X8664_MachoTargetObjectFile - This TLOF implementation is used for
-  /// Darwin/x86-64.
-  class X8664_MachoTargetObjectFile : public TargetLoweringObjectFileMachO {
+  /// X86_MachoTargetObjectFile - This TLOF implementation is used for Darwin
+  /// x86 variants.
+  class X86_MachoTargetObjectFile : public TargetLoweringObjectFileMachO {
   public:
+    virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
 
+    virtual unsigned getTTypeEncoding() const;
+  };
+
+  /// X8664_MachoTargetObjectFile - This TLOF implementation is used for Darwin
+  /// x86-64.
+  class X8664_MachoTargetObjectFile : public X86_MachoTargetObjectFile {
+  public:
     virtual const MCExpr *
     getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
                                    MachineModuleInfo *MMI, unsigned Encoding,