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Temporarily revert "Don't try to construct debug LexicalScopes hierarchy for functions that do not have top level debug information." as it appears to be breaking some LTO constructs.

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This reverts commit r212203.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212298 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2014-07-03 22:24:54 +00:00
parent 3c58743b2d
commit 3a3941576d
8 changed files with 42 additions and 210 deletions
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10
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -730,8 +730,6 @@ void DwarfDebug::beginModule() {
const Module *M = MMI->getModule();
FunctionDIs = makeSubprogramMap(*M);
// If module has named metadata anchors then use them, otherwise scan the
// module using debug info finder to collect debug info.
NamedMDNode *CU_Nodes = M->getNamedMetadata("llvm.dbg.cu");
@ -1417,10 +1415,6 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
if (!MMI->hasDebugInfo())
return;
auto DI = FunctionDIs.find(MF->getFunction());
if (DI == FunctionDIs.end())
return;
// Grab the lexical scopes for the function, if we don't have any of those
// then we're not going to be able to do anything.
LScopes.initialize(*MF);
@ -1436,7 +1430,6 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
// belongs to so that we add to the correct per-cu line table in the
// non-asm case.
LexicalScope *FnScope = LScopes.getCurrentFunctionScope();
assert(FnScope->getScopeNode() == DI->second);
DwarfCompileUnit *TheCU = SPMap.lookup(FnScope->getScopeNode());
assert(TheCU && "Unable to find compile unit!");
if (Asm->OutStreamer.hasRawTextSupport())
@ -1534,8 +1527,7 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
assert(CurFn == MF);
assert(CurFn != nullptr);
if (!MMI->hasDebugInfo() || LScopes.empty() ||
!FunctionDIs.count(MF->getFunction())) {
if (!MMI->hasDebugInfo() || LScopes.empty()) {
// If we don't have a lexical scope for this function then there will
// be a hole in the range information. Keep note of this by setting the
// previously used section to nullptr.