------- Comment #8 from jakub at gcc dot gnu dot org 2009-03-25 18:31 ------- fwprop won't propagate a constant into a "r" constrained asm operand, because verify_changes (0) fails in that case (it calls check_asm_operands, which verifies the constraints of all the operands).
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39543