From f65a638d942b87413a7181acb965e4c2fc4c0c6f Mon Sep 17 00:00:00 2001
From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Mon, 19 Nov 2012 21:06:26 +0000
Subject: Factor out type info emission into separate routine. It turned out
 that ARM wants different layout of type infos. This is yet another patch in
 attempt to fix PR7187

llvm-svn: 168325
---
 llvm/lib/CodeGen/AsmPrinter/ARMException.cpp   | 49 ++++++++++++++++++++++++++
 llvm/lib/CodeGen/AsmPrinter/DwarfException.cpp | 14 ++++++--
 llvm/lib/CodeGen/AsmPrinter/DwarfException.h   |  3 ++
 3 files changed, 64 insertions(+), 2 deletions(-)

(limited to 'llvm/lib')

diff --git a/llvm/lib/CodeGen/AsmPrinter/ARMException.cpp b/llvm/lib/CodeGen/AsmPrinter/ARMException.cpp
index 8eea802765c..bbbdfd3c10f 100644
--- a/llvm/lib/CodeGen/AsmPrinter/ARMException.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/ARMException.cpp
@@ -93,3 +93,52 @@ void ARMException::EndFunction() {
 
   Asm->OutStreamer.EmitFnEnd();
 }
+
+void ARMException::EmitTypeInfos(unsigned TTypeEncoding) {
+  const std::vector<const GlobalVariable *> &TypeInfos = MMI->getTypeInfos();
+  const std::vector<unsigned> &FilterIds = MMI->getFilterIds();
+
+  bool VerboseAsm = Asm->OutStreamer.isVerboseAsm();
+
+  int Entry = 0;
+  // Emit the Catch TypeInfos.
+  if (VerboseAsm && !TypeInfos.empty()) {
+    Asm->OutStreamer.AddComment(">> Catch TypeInfos <<");
+    Asm->OutStreamer.AddBlankLine();
+    Entry = TypeInfos.size();
+  }
+
+  for (std::vector<const GlobalVariable *>::const_reverse_iterator
+         I = TypeInfos.rbegin(), E = TypeInfos.rend(); I != E; ++I) {
+    const GlobalVariable *GV = *I;
+    if (VerboseAsm)
+      Asm->OutStreamer.AddComment("TypeInfo " + Twine(Entry--));
+    if (GV)
+      Asm->EmitTTypeReference(GV, TTypeEncoding);
+    else
+      Asm->OutStreamer.EmitIntValue(0,Asm->GetSizeOfEncodedValue(TTypeEncoding),
+                                    0);
+  }
+
+  // Emit the Exception Specifications.
+  if (VerboseAsm && !FilterIds.empty()) {
+    Asm->OutStreamer.AddComment(">> Filter TypeInfos <<");
+    Asm->OutStreamer.AddBlankLine();
+    Entry = 0;
+  }
+  for (std::vector<unsigned>::const_iterator
+         I = FilterIds.begin(), E = FilterIds.end(); I < E; ++I) {
+    unsigned TypeID = *I;
+    if (VerboseAsm) {
+      --Entry;
+      if (TypeID != 0)
+        Asm->OutStreamer.AddComment("FilterInfo " + Twine(Entry));
+    }
+
+    if (TypeID == 0)
+      Asm->OutStreamer.EmitIntValue(0,Asm->GetSizeOfEncodedValue(TTypeEncoding),
+                                    0);
+    else
+      Asm->EmitTTypeReference(TypeInfos[TypeID - 1], TTypeEncoding);    
+  }
+}
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfException.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfException.cpp
index 0fab389ab7f..4ebb75b9b80 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfException.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfException.cpp
@@ -672,6 +672,18 @@ void DwarfException::EmitExceptionTable() {
     Asm->EmitSLEB128(Action.NextAction);
   }
 
+  EmitTypeInfos(TTypeEncoding);
+
+  Asm->EmitAlignment(2);
+}
+
+void DwarfException::EmitTypeInfos(unsigned TTypeEncoding) {
+  const std::vector<const GlobalVariable *> &TypeInfos = MMI->getTypeInfos();
+  const std::vector<unsigned> &FilterIds = MMI->getFilterIds();
+
+  bool VerboseAsm = Asm->OutStreamer.isVerboseAsm();
+
+  int Entry = 0;
   // Emit the Catch TypeInfos.
   if (VerboseAsm && !TypeInfos.empty()) {
     Asm->OutStreamer.AddComment(">> Catch TypeInfos <<");
@@ -708,8 +720,6 @@ void DwarfException::EmitExceptionTable() {
 
     Asm->EmitULEB128(TypeID);
   }
-
-  Asm->EmitAlignment(2);
 }
 
 /// EndModule - Emit all exception information that should come after the
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfException.h b/llvm/lib/CodeGen/AsmPrinter/DwarfException.h
index fe9e4936095..74b1b13367a 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfException.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfException.h
@@ -121,6 +121,8 @@ protected:
   ///     catches in the function.  This tables is reversed indexed base 1.
   void EmitExceptionTable();
 
+  virtual void EmitTypeInfos(unsigned TTypeEncoding);
+
 public:
   //===--------------------------------------------------------------------===//
   // Main entry points.
@@ -175,6 +177,7 @@ public:
 };
 
 class ARMException : public DwarfException {
+  void EmitTypeInfos(unsigned TTypeEncoding);
 public:
   //===--------------------------------------------------------------------===//
   // Main entry points.
-- 
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