Merge pull request #16943 from daviditen/llvm-unsigned-tracking
Improve tracking of unsigned types in llvm codegen
[reviewed by @mppf]
In some cases we were losing track of types or symbols being unsigned. Update
LayeredValueTable to keep better track of this, and update codegen functions
to set the GenRet::isUnsigned flag appropriately.
Signed-off-by: David Iten email@example.com