Extract subprogram and compile unit information from the debug info attached to an instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83491 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index 1d6e3a6..1436aa9 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -966,6 +966,12 @@
/// processModule - Process entire module and collect debug info.
void DebugInfoFinder::processModule(Module &M) {
+#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
+ MetadataContext &TheMetadata = M.getContext().getMetadata();
+ unsigned MDDbgKind = TheMetadata.getMDKind("dbg");
+ if (!MDDbgKind)
+ return;
+#endif
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;
@@ -980,6 +986,18 @@
processRegionEnd(DRE);
else if (DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI))
processDeclare(DDI);
+#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
+ else if (MDNode *L = TheMetadata.getMD(MDDbgKind, BI)) {
+ DILocation Loc(L);
+ DIScope S(Loc.getScope().getNode());
+ if (S.isCompileUnit())
+ addCompileUnit(DICompileUnit(S.getNode()));
+ else if (S.isSubprogram())
+ processSubprogram(DISubprogram(S.getNode()));
+ else if (S.isLexicalBlock())
+ processLexicalBlock(DILexicalBlock(S.getNode()));
+ }
+#endif
}
NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.gv");
@@ -1021,6 +1039,17 @@
}
}
+/// processLexicalBlock
+void DebugInfoFinder::processLexicalBlock(DILexicalBlock LB) {
+ if (LB.isNull())
+ return;
+ DIScope Context = LB.getContext();
+ if (Context.isLexicalBlock())
+ return processLexicalBlock(DILexicalBlock(Context.getNode()));
+ else
+ return processSubprogram(DISubprogram(Context.getNode()));
+}
+
/// processSubprogram - Process DISubprogram.
void DebugInfoFinder::processSubprogram(DISubprogram SP) {
if (SP.isNull())