Macro debug info support in LLVM IR

[oota-llvm.git] / lib / Bitcode / Writer / BitcodeWriter.cpp

diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index c73b099e27f92c4e27f4fb8719eadccb52db6491..201b4bc34c2bbbf9a63f9a80b799847ac2b29212 100644 (file)
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -202,6 +202,8 @@ static uint64_t getAttrKindEncoding(Attribute::AttrKind Kind) {
     return bitc::ATTR_KIND_NO_IMPLICIT_FLOAT;
   case Attribute::NoInline:
     return bitc::ATTR_KIND_NO_INLINE;
+  case Attribute::NoRecurse:
+    return bitc::ATTR_KIND_NO_RECURSE;
   case Attribute::NonLazyBind:
     return bitc::ATTR_KIND_NON_LAZY_BIND;
   case Attribute::NonNull:
@@ -774,6 +776,21 @@ static uint64_t WriteModuleInfo(const Module *M, const ValueEnumerator &VE,
     Vals.clear();
   }
 
+  // Write a record indicating the number of module-level metadata IDs
+  // This is needed because the ids of metadata are assigned implicitly
+  // based on their ordering in the bitcode, with the function-level
+  // metadata ids starting after the module-level metadata ids. For
+  // function importing where we lazy load the metadata as a postpass,
+  // we want to avoid parsing the module-level metadata before parsing
+  // the imported functions.
+  BitCodeAbbrev *Abbv = new BitCodeAbbrev();
+  Abbv->Add(BitCodeAbbrevOp(bitc::MODULE_CODE_METADATA_VALUES));
+  Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
+  unsigned MDValsAbbrev = Stream.EmitAbbrev(Abbv);
+  Vals.push_back(VE.numMDs());
+  Stream.EmitRecord(bitc::MODULE_CODE_METADATA_VALUES, Vals, MDValsAbbrev);
+  Vals.clear();
+
   uint64_t VSTOffsetPlaceholder =
       WriteValueSymbolTableForwardDecl(M->getValueSymbolTable(), Stream);
   return VSTOffsetPlaceholder;
@@ -1000,6 +1017,7 @@ static void WriteDICompileUnit(const DICompileUnit *N,
   Record.push_back(VE.getMetadataOrNullID(N->getGlobalVariables().get()));
   Record.push_back(VE.getMetadataOrNullID(N->getImportedEntities().get()));
   Record.push_back(N->getDWOId());
+  Record.push_back(VE.getMetadataOrNullID(N->getMacros().get()));
 
   Stream.EmitRecord(bitc::METADATA_COMPILE_UNIT, Record, Abbrev);
   Record.clear();
@@ -1075,6 +1093,33 @@ static void WriteDINamespace(const DINamespace *N, const ValueEnumerator &VE,
   Record.clear();
 }
 
+static void WriteDIMacro(const DIMacro *N, const ValueEnumerator &VE,
+                         BitstreamWriter &Stream,
+                         SmallVectorImpl<uint64_t> &Record, unsigned Abbrev) {
+  Record.push_back(N->isDistinct());
+  Record.push_back(N->getMacinfoType());
+  Record.push_back(N->getLine());
+  Record.push_back(VE.getMetadataOrNullID(N->getRawName()));
+  Record.push_back(VE.getMetadataOrNullID(N->getRawValue()));
+
+  Stream.EmitRecord(bitc::METADATA_MACRO, Record, Abbrev);
+  Record.clear();
+}
+
+static void WriteDIMacroFile(const DIMacroFile *N, const ValueEnumerator &VE,
+                             BitstreamWriter &Stream,
+                             SmallVectorImpl<uint64_t> &Record,
+                             unsigned Abbrev) {
+  Record.push_back(N->isDistinct());
+  Record.push_back(N->getMacinfoType());
+  Record.push_back(N->getLine());
+  Record.push_back(VE.getMetadataOrNullID(N->getFile()));
+  Record.push_back(VE.getMetadataOrNullID(N->getElements().get()));
+
+  Stream.EmitRecord(bitc::METADATA_MACRO_FILE, Record, Abbrev);
+  Record.clear();
+}
+
 static void WriteDIModule(const DIModule *N, const ValueEnumerator &VE,
                           BitstreamWriter &Stream,
                           SmallVectorImpl<uint64_t> &Record, unsigned Abbrev) {
@@ -1381,7 +1426,7 @@ static void WriteModuleMetadataStore(const Module *M, BitstreamWriter &Stream) {
 
   if (Names.empty()) return;
 
-  Stream.EnterSubblock(bitc::METADATA_BLOCK_ID, 3);
+  Stream.EnterSubblock(bitc::METADATA_KIND_BLOCK_ID, 3);
 
   for (unsigned MDKindID = 0, e = Names.size(); MDKindID != e; ++MDKindID) {
     Record.push_back(MDKindID);
@@ -1736,8 +1781,8 @@ static void WriteOperandBundles(BitstreamWriter &Stream, ImmutableCallSite CS,
   LLVMContext &C = CS.getInstruction()->getContext();
 
   for (unsigned i = 0, e = CS.getNumOperandBundles(); i != e; ++i) {
-    const auto &Bundle = CS.getOperandBundle(i);
-    Record.push_back(C.getOperandBundleTagID(Bundle.Tag));
+    const auto &Bundle = CS.getOperandBundleAt(i);
+    Record.push_back(C.getOperandBundleTagID(Bundle.getTagName()));
 
     for (auto &Input : Bundle.Inputs)
       PushValueAndType(Input, InstID, Record, VE);
@@ -1889,10 +1934,9 @@ static void WriteInstruction(const Instruction &I, unsigned InstID,
       Vals.push_back(VE.getTypeID(SI.getCondition()->getType()));
       pushValue(SI.getCondition(), InstID, Vals, VE);
       Vals.push_back(VE.getValueID(SI.getDefaultDest()));
-      for (SwitchInst::ConstCaseIt i = SI.case_begin(), e = SI.case_end();
-           i != e; ++i) {
-        Vals.push_back(VE.getValueID(i.getCaseValue()));
-        Vals.push_back(VE.getValueID(i.getCaseSuccessor()));
+      for (SwitchInst::ConstCaseIt Case : SI.cases()) {
+        Vals.push_back(VE.getValueID(Case.getCaseValue()));
+        Vals.push_back(VE.getValueID(Case.getCaseSuccessor()));
       }
     }
     break;
@@ -2128,8 +2172,11 @@ static void WriteInstruction(const Instruction &I, unsigned InstID,
     Code = bitc::FUNC_CODE_INST_CALL;
 
     Vals.push_back(VE.getAttributeID(CI.getAttributes()));
-    Vals.push_back((CI.getCallingConv() << 1) | unsigned(CI.isTailCall()) |
-                   unsigned(CI.isMustTailCall()) << 14 | 1 << 15);
+    Vals.push_back(CI.getCallingConv() << bitc::CALL_CCONV |
+                   unsigned(CI.isTailCall()) << bitc::CALL_TAIL |
+                   unsigned(CI.isMustTailCall()) << bitc::CALL_MUSTTAIL |
+                   1 << bitc::CALL_EXPLICIT_TYPE |
+                   unsigned(CI.isNoTailCall()) << bitc::CALL_NOTAIL);
     Vals.push_back(VE.getTypeID(FTy));
     PushValueAndType(CI.getCalledValue(), InstID, Vals, VE);  // Callee