> Why PLUS_EXPR and MULT_EXPR? Pointer arithmetic should use > POINTER_PLUS_EXPR exclusively. I don't think you should be seeing > PLUS_EXPRs here. The MULT_EXPR show up in scaling expressions?
MULT_EXPR shows up in array indexing, since the index is multiplied by the size of the element; gcc converts everything to bytes before lowering. I added PLUS_EXPR for completeness, since I'm sure someone will write an expression like array[i+1] at some point. :-) -DeLesley