[analyzer] Retain address space information in getElementRegion (#151370) The factory method `MemRegionManager::getElementRegion()` is the main way of constructing `ElementRegion` objects, which are widespread in the analysis and may represent array elements (as lvalues), pointer arithmetic and type conversions. This factory method used to strip all qualifiers from the type associated with the element (after canonicalizing it), but the address space qualifier can affect the size of a pointer type, so stripping it caused an assertion failure (in `evalBinOpLL`): clang: clang/lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp:785: void assertEqualBitWidths(clang::ento::ProgramStateRef, clang::ento::Loc, clang::ento::Loc): Assertion `RhsBitwidth == LhsBitwidth && "RhsLoc and LhsLoc bitwidth must be same!"' failed. --------- Co-authored-by: Vince Bridgers <vince.a.bridgers@ericsson.com>
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