tree.h (TYPE_ALIGN_OK): New flag.
* tree.h (TYPE_ALIGN_OK): New flag. * emit-rtl.c (set_mem_attributes): Handle it. * expr.c (emit_single_push_insn): Only set to alias set 0 if doing sibcall optimization. (expand_expr, case COMPONENT_REF): Call set_mem_attributes on case when make temporary. (expand_expr, case CONVERT_EXPR): Simplify convert-to-union case. (expand_expr, case ADDR_EXPR): Abort if TYPE_ALIGN_OK and need copy. From-SVN: r47149
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