------- Comment #9 from rguenth at gcc dot gnu dot org 2008-03-20 17:56 ------- I did a quick scan and Ada, C++ and C ever build these operations. Also a few backends do (mips, rs6000 and s390). So IMHO changing the semantics of these to
/* Nodes for ++ and -- in C. The second arg is how much to increment or decrement by. For a pointer, it would be the size of the object pointed to. The type of the expression specifies the type the increment is performed on and the type of the result. This type does not need to match the type of the first argument, instead that is properly size-/zero-extended before the arithmetic operation. */ DEFTREECODE (PREDECREMENT_EXPR, "predecrement_expr", tcc_expression, 2) DEFTREECODE (PREINCREMENT_EXPR, "preincrement_expr", tcc_expression, 2) DEFTREECODE (POSTDECREMENT_EXPR, "postdecrement_expr", tcc_expression, 2) DEFTREECODE (POSTINCREMENT_EXPR, "postincrement_expr", tcc_expression, 2) is reasonable. Note that expansion no longer handles these tree codes, they are expected to only survive until gimplification. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35634
