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[oota-llvm.git] / lib / VMCore / DebugInfo.cpp

diff --git a/lib/VMCore/DebugInfo.cpp b/lib/VMCore/DebugInfo.cpp
index c8f8f7d67b845678eac7969d423acde39d1e96ef..7d8cf72aab208bf6aa5872bad7c420735a52140e 100644 (file)
--- a/lib/VMCore/DebugInfo.cpp
+++ b/lib/VMCore/DebugInfo.cpp
@@ -13,16 +13,16 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/DebugInfo.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Analysis/ValueTracking.h"
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
-#include "llvm/Intrinsics.h"
-#include "llvm/IntrinsicInst.h"
 #include "llvm/Instructions.h"
+#include "llvm/IntrinsicInst.h"
+#include "llvm/Intrinsics.h"
 #include "llvm/Module.h"
-#include "llvm/Analysis/ValueTracking.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/Dwarf.h"
 #include "llvm/Support/raw_ostream.h"
@@ -68,7 +68,8 @@ uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const {
     return 0;
 
   if (Elt < DbgNode->getNumOperands())
-    if (ConstantInt *CI = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
+    if (ConstantInt *CI
+        = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
       return CI->getZExtValue();
 
   return 0;
@@ -111,6 +112,16 @@ Function *DIDescriptor::getFunctionField(unsigned Elt) const {
   return 0;
 }
 
+void DIDescriptor::replaceFunctionField(unsigned Elt, Function *F) {
+  if (DbgNode == 0)
+    return;
+
+  if (Elt < DbgNode->getNumOperands()) {
+    MDNode *Node = const_cast<MDNode*>(DbgNode);
+    Node->replaceOperandWith(Elt, F);
+  }
+}
+
 unsigned DIVariable::getNumAddrElements() const {
   if (getVersion() <= LLVMDebugVersion8)
     return DbgNode->getNumOperands()-6;
@@ -648,8 +659,9 @@ DIArray DICompileUnit::getSubprograms() const {
     return DIArray();
 
   if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(12)))
-    if (MDNode *A = dyn_cast_or_null<MDNode>(N->getOperand(0)))
-      return DIArray(A);
+    if (N->getNumOperands() > 0)
+      if (MDNode *A = dyn_cast_or_null<MDNode>(N->getOperand(0)))
+        return DIArray(A);
   return DIArray();
 }
 
@@ -681,7 +693,7 @@ static void fixupObjcLikeName(StringRef Str, SmallVectorImpl<char> &Out) {
   }
 }
 
-/// getFnSpecificMDNode - Return a NameMDNode, if available, that is 
+/// getFnSpecificMDNode - Return a NameMDNode, if available, that is
 /// suitable to hold function specific information.
 NamedMDNode *llvm::getFnSpecificMDNode(const Module &M, DISubprogram Fn) {
   SmallString<32> Name = StringRef("llvm.dbg.lv.");
@@ -710,7 +722,7 @@ NamedMDNode *llvm::getOrInsertFnSpecificMDNode(Module &M, DISubprogram Fn) {
   if (FName.startswith(StringRef(&One, 1)))
     FName = FName.substr(1);
   fixupObjcLikeName(FName, Name);
-  
+
   return M.getOrInsertNamedMetadata(Name.str());
 }
 
@@ -733,7 +745,7 @@ DIVariable llvm::cleanseInlinedVariable(MDNode *DV, LLVMContext &VMContext) {
   SmallVector<Value *, 16> Elts;
   // Insert inlined scope as 7th element.
   for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i)
-    i == 7 ? 
+    i == 7 ?
       Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext))):
       Elts.push_back(DV->getOperand(i));
   return DIVariable(MDNode::get(VMContext, Elts));
@@ -747,7 +759,7 @@ DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
 
   if (D.isLexicalBlockFile())
     return getDISubprogram(DILexicalBlockFile(Scope).getContext());
-  
+
   if (D.isLexicalBlock())
     return getDISubprogram(DILexicalBlock(Scope).getContext());
 
@@ -783,7 +795,7 @@ bool llvm::isSubprogramContext(const MDNode *Context) {
 //===----------------------------------------------------------------------===//
 
 /// processModule - Process entire module and collect debug info.
-void DebugInfoFinder::processModule(Module &M) {
+void DebugInfoFinder::processModule(const Module &M) {
   if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) {
     for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
       DICompileUnit CU(CU_Nodes->getOperand(i));
@@ -809,11 +821,12 @@ void DebugInfoFinder::processModule(Module &M) {
     }
   }
 
-  for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
-    for (Function::iterator FI = (*I).begin(), FE = (*I).end(); FI != FE; ++FI)
-      for (BasicBlock::iterator BI = (*FI).begin(), BE = (*FI).end(); BI != BE;
-           ++BI) {
-        if (DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI))
+  for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
+    for (Function::const_iterator FI = (*I).begin(), FE = (*I).end();
+         FI != FE; ++FI)
+      for (BasicBlock::const_iterator BI = (*FI).begin(), BE = (*FI).end();
+           BI != BE; ++BI) {
+        if (const DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI))
           processDeclare(DDI);
 
         DebugLoc Loc = BI->getDebugLoc();
@@ -917,7 +930,7 @@ void DebugInfoFinder::processSubprogram(DISubprogram SP) {
 }
 
 /// processDeclare - Process DbgDeclareInst.
-void DebugInfoFinder::processDeclare(DbgDeclareInst *DDI) {
+void DebugInfoFinder::processDeclare(const DbgDeclareInst *DDI) {
   MDNode *N = dyn_cast<MDNode>(DDI->getVariable());
   if (!N) return;
 
@@ -1055,7 +1068,7 @@ void DIType::printInternal(raw_ostream &OS) const {
      << ", align " << getAlignInBits()
      << ", offset " << getOffsetInBits();
   if (isBasicType())
-    if (const char *Enc = 
+    if (const char *Enc =
         dwarf::AttributeEncodingString(DIBasicType(DbgNode).getEncoding()))
       OS << ", enc " << Enc;
   OS << "]";