diff options
Diffstat (limited to 'llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp index b388e43..bcace62 100644 --- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp @@ -1578,11 +1578,16 @@ TypeIndex CodeViewDebug::lowerTypeArray(const DICompositeType *Ty) { assert(Element->getTag() == dwarf::DW_TAG_subrange_type); const DISubrange *Subrange = cast<DISubrange>(Element); - assert(!Subrange->getRawLowerBound() && - "codeview doesn't support subranges with lower bounds"); int64_t Count = -1; - if (auto *CI = Subrange->getCount().dyn_cast<ConstantInt*>()) - Count = CI->getSExtValue(); + // Calculate the count if either LowerBound is absent or is zero and + // either of Count or UpperBound are constant. + auto *LI = Subrange->getLowerBound().dyn_cast<ConstantInt *>(); + if (!Subrange->getRawLowerBound() || (LI && (LI->getSExtValue() == 0))) { + if (auto *CI = Subrange->getCount().dyn_cast<ConstantInt*>()) + Count = CI->getSExtValue(); + else if (auto *UI = Subrange->getUpperBound().dyn_cast<ConstantInt*>()) + Count = UI->getSExtValue() + 1; // LowerBound is zero + } // Forward declarations of arrays without a size and VLAs use a count of -1. // Emit a count of zero in these cases to match what MSVC does for arrays |