diff options
Diffstat (limited to 'llvm/lib/IR/AutoUpgrade.cpp')
| -rw-r--r-- | llvm/lib/IR/AutoUpgrade.cpp | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/llvm/lib/IR/AutoUpgrade.cpp b/llvm/lib/IR/AutoUpgrade.cpp index 53de9ee..ec71975 100644 --- a/llvm/lib/IR/AutoUpgrade.cpp +++ b/llvm/lib/IR/AutoUpgrade.cpp @@ -4886,7 +4886,25 @@ bool llvm::UpgradeDebugInfo(Module &M) { if (DisableAutoUpgradeDebugInfo) return false; - unsigned Version = getDebugMetadataVersionFromModule(M); + // We need to get metadata before the module is verified (i.e., getModuleFlag + // makes assumptions that we haven't verified yet). Carefully extract the flag + // from the metadata. + unsigned Version = 0; + if (NamedMDNode *ModFlags = M.getModuleFlagsMetadata()) { + auto OpIt = find_if(ModFlags->operands(), [](const MDNode *Flag) { + if (Flag->getNumOperands() < 3) + return false; + if (MDString *K = dyn_cast_or_null<MDString>(Flag->getOperand(1))) + return K->getString() == "Debug Info Version"; + return false; + }); + if (OpIt != ModFlags->op_end()) { + const MDOperand &ValOp = (*OpIt)->getOperand(2); + if (auto *CI = mdconst::dyn_extract_or_null<ConstantInt>(ValOp)) + Version = CI->getZExtValue(); + } + } + if (Version == DEBUG_METADATA_VERSION) { bool BrokenDebugInfo = false; if (verifyModule(M, &llvm::errs(), &BrokenDebugInfo)) |