PrevSection/PrevCU are used to detect holes in the address range of a CU
to ensure the DW_AT_ranges does not include those holes. When we see a
function with no debug info, though it may be in the same range as the
prior and subsequent functions, there should be a gap in the CU's
ranges. By setting PrevCU to null in that case, the range would not be
extended to cover the gap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217466
91177308-0d34-0410-b5e6-
96231b3b80d8
// If we don't have a lexical scope for this function then there will
// be a hole in the range information. Keep note of this by setting the
// previously used section to nullptr.
// If we don't have a lexical scope for this function then there will
// be a hole in the range information. Keep note of this by setting the
// previously used section to nullptr.
PrevCU = nullptr;
CurFn = nullptr;
return;
PrevCU = nullptr;
CurFn = nullptr;
return;
// Add the range of this function to the list of ranges for the CU.
RangeSpan Span(FunctionBeginSym, FunctionEndSym);
TheCU.addRange(std::move(Span));
// Add the range of this function to the list of ranges for the CU.
RangeSpan Span(FunctionBeginSym, FunctionEndSym);
TheCU.addRange(std::move(Span));
- PrevSection = Asm->getCurrentSection();
PrevCU = &TheCU;
// Clear debug info
PrevCU = &TheCU;
// Clear debug info
// If nonnull, stores the current machine instruction we're processing.
const MachineInstr *CurMI;
// If nonnull, stores the current machine instruction we're processing.
const MachineInstr *CurMI;
- // If nonnull, stores the section that the previous function was allocated to
- // emitting.
- const MCSection *PrevSection;
-
// If nonnull, stores the CU in which the previous subprogram was contained.
const DwarfCompileUnit *PrevCU;
// If nonnull, stores the CU in which the previous subprogram was contained.
const DwarfCompileUnit *PrevCU;
/// Returns the section symbol for the .debug_loc section.
MCSymbol *getDebugLocSym() const { return DwarfDebugLocSectionSym; }
/// Returns the section symbol for the .debug_loc section.
MCSymbol *getDebugLocSym() const { return DwarfDebugLocSectionSym; }
- /// Returns the previous section that was emitted into.
- const MCSection *getPrevSection() const { return PrevSection; }
-
/// Returns the previous CU that was being updated
const DwarfCompileUnit *getPrevCU() const { return PrevCU; }
/// Returns the previous CU that was being updated
const DwarfCompileUnit *getPrevCU() const { return PrevCU; }
// check the current section and CU against the previous section and CU we
// emitted into and the subprogram was contained within. If these are the
// same then extend our current range, otherwise add this as a new range.
// check the current section and CU against the previous section and CU we
// emitted into and the subprogram was contained within. If these are the
// same then extend our current range, otherwise add this as a new range.
- if (CURanges.size() == 0 ||
- this != DD->getPrevCU() ||
- Asm->getCurrentSection() != DD->getPrevSection()) {
+ if (CURanges.empty() || this != DD->getPrevCU() ||
+ (&CURanges.back().getEnd()->getSection() !=
+ &Range.getEnd()->getSection())) {
CURanges.push_back(Range);
return;
}
CURanges.push_back(Range);
return;
}
- assert(&(CURanges.back().getEnd()->getSection()) ==
- &(Range.getEnd()->getSection()) &&
- "We can only append to a range in the same section!");
CURanges.back().setEnd(Range.getEnd());
}
}
CURanges.back().setEnd(Range.getEnd());
}
}