[PATCH] D70508: Fix an offset underflow bug in DwarfExpression when describing small values with subregisters

[Vedant Kumar via Phabricator via llvm-commits]

vsk added inline comments.


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Comment at: llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp:168
+    // Mark it as emitted.
+    Coverage.set(Offset, Offset + Size);
+    CurPos = Offset + Size;
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Is it a requirement that all bits in `MachineReg` be described? What happens is there's an unset bit in `Coverage`?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D70508/new/

https://reviews.llvm.org/D70508