diff options
Diffstat (limited to 'lib/CodeGen/AsmPrinter/DwarfDebug.cpp')
| -rw-r--r-- | lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp index d3f6ec661e..e81b933ee5 100644 --- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp +++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp @@ -67,6 +67,11 @@ GenerateODRHash("generate-odr-hash", cl::Hidden, cl::desc("Add an ODR hash to external type DIEs."), cl::init(false)); +static cl::opt<bool> +GenerateCUHash("generate-cu-hash", cl::Hidden, + cl::desc("Add the CU hash as the dwo_id."), + cl::init(false)); + namespace { enum DefaultOnOff { Default, @@ -1024,14 +1029,19 @@ void DwarfDebug::finalizeModuleInfo() { // If we're splitting the dwarf out now that we've got the entire // CU then construct a skeleton CU based upon it. if (useSplitDwarf()) { + uint64_t ID = 0; + if (GenerateCUHash) { + DIEHash CUHash; + ID = CUHash.computeCUSignature(TheCU->getCUDie()); + } // This should be a unique identifier when we want to build .dwp files. TheCU->addUInt(TheCU->getCUDie(), dwarf::DW_AT_GNU_dwo_id, - dwarf::DW_FORM_data8, 0); + dwarf::DW_FORM_data8, ID); // Now construct the skeleton CU associated. CompileUnit *SkCU = constructSkeletonCU(CUI->first); // This should be a unique identifier when we want to build .dwp files. SkCU->addUInt(SkCU->getCUDie(), dwarf::DW_AT_GNU_dwo_id, - dwarf::DW_FORM_data8, 0); + dwarf::DW_FORM_data8, ID); } } |