On Sat, Mar 19, 2005 at 09:59:32PM +0100, Zdenek Dvorak wrote: > > x = <VIEW_CONVERT_EXPR some_type> 22; > > what is the semantics of this expression? Should not this rather be > > x = <NOP_EXPR some_type> 22 > > (or just INTEGER_CST:some_type 22)?
The semantics are, exactly, union { some_type st; int_type it; } u; u.it = 22; x = u.st; In many cases we *could* fold the constant, but fold-const.c doesn't know much about view_convert_expr so we don't. r~