auto: Fix assorted issues with enums in constants. #4745
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This is wasted space if the const is just an enum, but optimizing that case without breaking everything else is an issue that can be addressed separately.
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There were a bunch of problems with consts where an enum was contained within some other type (vector, tuple, struct, etc.); some of these would cause LLVM assertion failures, and some would silently read from the wrong address. These changes should fix all of that. It would be good if someone with access to a win32 host could do the equivalent of `make check-stageN-rpass TESTNAME=enum` on that platform before merging this.
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There were a bunch of problems with consts where an enum was contained within some other type (vector, tuple, struct, etc.); some of these would cause LLVM assertion failures, and some would silently read from the wrong address. These changes should fix all of that.
It would be good if someone with access to a win32 host could do the equivalent of
make check-stageN-rpass TESTNAME=enumon that platform before merging this.