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-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 8b732765bf3..06b5b06c41b 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -810,6 +810,12 @@ void DwarfCompileUnit::addGlobalTypeUnitType(const DIType *Ty,
/// DbgVariable based on provided MachineLocation.
void DwarfCompileUnit::addVariableAddress(const DbgVariable &DV, DIE &Die,
MachineLocation Location) {
+ // addBlockByrefAddress is obsolete and will be removed soon.
+ // The clang frontend always generates block byref variables with a
+ // complex expression that encodes exactly what addBlockByrefAddress
+ // would do.
+ assert((!DV.isBlockByrefVariable() || DV.hasComplexAddress()) &&
+ "block byref variable without a complex expression");
if (DV.hasComplexAddress())
addComplexAddress(DV, Die, dwarf::DW_AT_location, Location);
else if (DV.isBlockByrefVariable())
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