Produce a __debug_frame section on darwin ARM when appropriate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131151 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 6 insertions, 73 deletions

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 7f39cef3f9..5a91341097 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -193,8 +193,6 @@ bool AsmPrinter::doInitialization(Module &M) {
   case ExceptionHandling::None:
     return false;
   case ExceptionHandling::SjLj:
-    DE = new DwarfSjLjException(this);
-    return false;
   case ExceptionHandling::DwarfCFI:
     DE = new DwarfCFIException(this);
     return false;
@@ -593,11 +591,13 @@ static bool EmitDebugValueComment(const MachineInstr *MI, AsmPrinter &AP) {
 }
 
 AsmPrinter::CFIMoveType AsmPrinter::needsCFIMoves() {
-  if (UnwindTablesMandatory)
-    return CFI_M_EH;
+  if (MAI->getExceptionHandlingType() == ExceptionHandling::DwarfCFI) {
+    if (UnwindTablesMandatory)
+      return CFI_M_EH;
 
-  if (!MF->getFunction()->doesNotThrow())
-    return CFI_M_EH;
+    if (!MF->getFunction()->doesNotThrow())
+      return CFI_M_EH;
+  }
 
   if (MMI->hasDebugInfo())
     return CFI_M_Debug;
diff --git a/lib/CodeGen/AsmPrinter/CMakeLists.txt b/lib/CodeGen/AsmPrinter/CMakeLists.txt
index bf5ef2878c..554b47c89c 100644
--- a/lib/CodeGen/AsmPrinter/CMakeLists.txt
+++ b/lib/CodeGen/AsmPrinter/CMakeLists.txt
@@ -8,7 +8,6 @@ add_llvm_library(LLVMAsmPrinter
   DwarfCompileUnit.cpp
   DwarfDebug.cpp
   DwarfException.cpp
-  DwarfSjLjException.cpp
   OcamlGCPrinter.cpp
   )
 
diff --git a/lib/CodeGen/AsmPrinter/DwarfException.h b/lib/CodeGen/AsmPrinter/DwarfException.h
index 68079bb655..42a3658fff 100644
--- a/lib/CodeGen/AsmPrinter/DwarfException.h
+++ b/lib/CodeGen/AsmPrinter/DwarfException.h
@@ -174,26 +174,6 @@ public:
   virtual void EndFunction();
 };
 
-class DwarfSjLjException : public DwarfException {
-public:
-  //===--------------------------------------------------------------------===//
-  // Main entry points.
-  //
-  DwarfSjLjException(AsmPrinter *A);
-  virtual ~DwarfSjLjException();
-
-  /// EndModule - Emit all exception information that should come after the
-  /// content.
-  virtual void EndModule();
-
-  /// BeginFunction - Gather pre-function exception information.  Assumes being
-  /// emitted immediately after the function entry point.
-  virtual void BeginFunction(const MachineFunction *MF);
-
-  /// EndFunction - Gather and emit post-function exception information.
-  virtual void EndFunction();
-};
-
 class ARMException : public DwarfException {
   /// shouldEmitTable - Per-function flag to indicate if EH tables should
   /// be emitted.
diff --git a/lib/CodeGen/AsmPrinter/DwarfSjLjException.cpp b/lib/CodeGen/AsmPrinter/DwarfSjLjException.cpp
deleted file mode 100644
index e8b8824b0b..0000000000
--- a/lib/CodeGen/AsmPrinter/DwarfSjLjException.cpp
+++ /dev/null
@@ -1,46 +0,0 @@
-//===-- CodeGen/AsmPrinter/DwarfSjLjException.cpp - Dwarf Exception Impl --==//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file is a simple implementation of DwarfException that just produces
-// the exception table for use with SjLj.
-//
-//===----------------------------------------------------------------------===//
-
-#include "DwarfException.h"
-#include "llvm/CodeGen/MachineLocation.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
-using namespace llvm;
-
-DwarfSjLjException::DwarfSjLjException(AsmPrinter *A) : DwarfException(A) {
-}
-
-DwarfSjLjException::~DwarfSjLjException() {}
-
-/// EndModule - Emit all exception information that should come after the
-/// content.
-void DwarfSjLjException::EndModule() {
-}
-
-/// BeginFunction - Gather pre-function exception information. Assumes it's
-/// being emitted immediately after the function entry point.
-void DwarfSjLjException::BeginFunction(const MachineFunction *MF) {
-}
-
-/// EndFunction - Gather and emit post-function exception information.
-///
-void DwarfSjLjException::EndFunction() {
-  // Record if this personality index uses a landing pad.
-  bool HasLandingPad = !MMI->getLandingPads().empty();
-
-  // Map all labels and get rid of any dead landing pads.
-  MMI->TidyLandingPads();
-
-  if (HasLandingPad)
-    EmitExceptionTable();
-}