Revert r68847. It breaks the build on non-Darwin targets, with this message

from the assembler:

Error: unknown pseudo-op: `.debug_inlined'


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68863 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 124 deletions

diff --git a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
index 7f68df862b..d59609b371 100644
--- a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
@@ -1252,10 +1252,6 @@ class DwarfDebug : public Dwarf {
   /// DbgScopeMap - Tracks the scopes in the current function.
   DenseMap<GlobalVariable *, DbgScope *> DbgScopeMap;
 
-  /// InlineInfo - Keep track of inlined functions and their location.
-  /// This information is used to populate debug_inlined section.
-  DenseMap<GlobalVariable *, SmallVector<unsigned, 4> > InlineInfo;
-
   /// DebugTimer - Timer for the Dwarf debug writer.
   Timer *DebugTimer;
   
@@ -2031,18 +2027,15 @@ private:
     for (unsigned j = 0, M = Scopes.size(); j < M; ++j) {
       // Define the Scope debug information entry.
       DbgScope *Scope = Scopes[j];
+      // FIXME - Ignore inlined functions for the time being.
+      if (!Scope->getParent()) continue;
 
       unsigned StartID = MMI->MappedLabel(Scope->getStartLabelID());
       unsigned EndID = MMI->MappedLabel(Scope->getEndLabelID());
 
       // Ignore empty scopes.
       if (StartID == EndID && StartID != 0) continue;
-
-      // Do not ignore inlined scope even if it is empty. Inlined scope 
-      // does not have any parent.
-      if (Scope->getParent() 
-          && Scope->getScopes().empty() && Scope->getVariables().empty()) 
-        continue;
+      if (Scope->getScopes().empty() && Scope->getVariables().empty()) continue;
 
       if (StartID == ParentStartID && EndID == ParentEndID) {
         // Just add stuff to the parent scope.
@@ -2788,74 +2781,6 @@ private:
     }
   }
 
-  /// EmitDebugInlineInfo - Emit inline info using following format.
-  /// Section Header:
-  /// 1. length of section
-  /// 2. Dwarf version number
-  /// 3. address size.
-  ///
-  /// Entries (one "entry" for each function that was inlined):
-  ///
-  /// 1. offset into __debug_str section for MIPS linkage name, if exists; 
-  ///   otherwise offset into __debug_str for regular function name.
-  /// 2. offset into __debug_str section for regular function name.
-  /// 3. an unsigned LEB128 number indicating the number of distinct inlining 
-  /// instances for the function.
-  /// 
-  /// The rest of the entry consists of a {die_offset, low_pc}  pair for each 
-  /// inlined instance; the die_offset points to the inlined_subroutine die in
-  /// the __debug_info section, and the low_pc is the starting address  for the
-  ///  inlining instance.
-  void EmitDebugInlineInfo() {
-    if (!MainCU)
-      return;
-
-    Asm->SwitchToDataSection(TAI->getDwarfDebugInlineSection());
-    Asm->EOL();
-    EmitDifference("debug_inlined_end", 1,
-                   "debug_inlined_begin", 1, true);
-    Asm->EOL("Length of Debug Inlined Information Entry");
-
-    EmitLabel("debug_inlined_begin", 1);
-
-    Asm->EmitInt16(DWARF_VERSION); Asm->EOL("Dwarf Version");
-    Asm->EmitInt8(TD->getPointerSize()); Asm->EOL("Address Size (in bytes)");
-
-    for (DenseMap<GlobalVariable *, SmallVector<unsigned, 4> >::iterator 
-           I = InlineInfo.begin(), E = InlineInfo.end(); I != E; ++I) {
-      GlobalVariable *GV = I->first;
-      SmallVector<unsigned, 4> &Labels = I->second;
-      DISubprogram SP(GV);
-      std::string Name;
-      std::string LName;
-
-      SP.getLinkageName(LName);
-      SP.getName(Name);
-
-      Asm->EmitString(LName.empty() ? Name : LName);
-      Asm->EOL("MIPS linkage name");
-
-      Asm->EmitString(Name); Asm->EOL("Function name");
-
-      Asm->EmitULEB128Bytes(Labels.size()); Asm->EOL("Inline count");
-
-      for (SmallVector<unsigned, 4>::iterator LI = Labels.begin(),
-             LE = Labels.end(); LI != LE; ++LI) {
-        DIE *SP = MainCU->getDieMapSlotFor(GV);
-        Asm->EmitInt32(SP->getOffset()); Asm->EOL("DIE offset");
-
-        if (TD->getPointerSize() == sizeof(int32_t))
-          O << TAI->getData32bitsDirective();
-        else
-          O << TAI->getData64bitsDirective();
-        PrintLabelName("label", *LI); Asm->EOL("low_pc");
-      }
-    }
-
-    EmitLabel("debug_inlined_end", 1);
-    Asm->EOL();
-  }
-
   /// GetOrCreateSourceID - Look up the source id with the given directory and
   /// source file names. If none currently exists, create a new id and insert it
   /// in the SourceIds map. This can update DirectoryNames and SourceFileNames maps
@@ -3206,9 +3131,6 @@ public:
     // Emit info into a debug macinfo section.
     EmitDebugMacInfo();
 
-    // Emit inline info.
-    EmitDebugInlineInfo();
-
     if (TimePassesIsEnabled)
       DebugTimer->stopTimer();
   }
@@ -3415,20 +3337,6 @@ public:
     return ID;
   }
 
-  /// RecordRegionStart - Indicate the start of a region.
-  unsigned RecordRegionStart(GlobalVariable *V, unsigned ID) {
-    if (TimePassesIsEnabled)
-      DebugTimer->startTimer();
-
-    DbgScope *Scope = getOrCreateScope(V);
-    if (!Scope->getStartLabelID()) Scope->setStartLabelID(ID);
-
-    if (TimePassesIsEnabled)
-      DebugTimer->stopTimer();
-
-    return ID;
-  }
-
   /// RecordRegionEnd - Indicate the end of a region.
   unsigned RecordRegionEnd(GlobalVariable *V) {
     if (TimePassesIsEnabled)
@@ -3469,23 +3377,6 @@ public:
     if (TimePassesIsEnabled)
       DebugTimer->stopTimer();
   }
-
-  //// RecordInlineInfo - Global variable GV is inlined at the location marked
-  //// by LabelID label.
-  void RecordInlineInfo(GlobalVariable *GV, unsigned LabelID) {
-    MMI->RecordUsedDbgLabel(LabelID);
-    DenseMap<GlobalVariable *, SmallVector<unsigned, 4> >::iterator
-      I = InlineInfo.find(GV);
-    if (I == InlineInfo.end()) {
-      SmallVector<unsigned, 4> Labels;
-      Labels.push_back(LabelID);
-      InlineInfo[GV] = Labels;
-      return;
-    }
-
-    SmallVector<unsigned, 4> &Labels = I->second;
-    Labels.push_back(LabelID);
-  }
 };
 
 //===----------------------------------------------------------------------===//
@@ -4641,11 +4532,6 @@ unsigned DwarfWriter::RecordRegionStart(GlobalVariable *V) {
   return DD->RecordRegionStart(V);
 }
 
-/// RecordRegionStart - Indicate the start of a region.
-unsigned DwarfWriter::RecordRegionStart(GlobalVariable *V, unsigned ID) {
-  return DD->RecordRegionStart(V, ID);
-}
-
 /// RecordRegionEnd - Indicate the end of a region.
 unsigned DwarfWriter::RecordRegionEnd(GlobalVariable *V) {
   return DD->RecordRegionEnd(V);
@@ -4667,10 +4553,3 @@ void DwarfWriter::RecordVariable(GlobalVariable *GV, unsigned FrameIndex) {
 bool DwarfWriter::ShouldEmitDwarfDebug() const {
   return DD->ShouldEmitDwarfDebug();
 }
-
-//// RecordInlineInfo - Global variable GV is inlined at the location marked
-//// by LabelID label.
-void DwarfWriter::RecordInlineInfo(GlobalVariable *GV, unsigned LabelID) {
-  DD->RecordInlineInfo(GV, LabelID);
-}
-