This is a generic method for doing formatted output. It takes an
dump_kind which signifies the type of
dump. This method outputs information only when the dumps are enabled
for this particular
dump_kind. Note that the caller doesn’t
need to know if the particular dump is enabled or not, or even the
file name. The caller only needs to decide which dump output
information is relevant, and under what conditions. This determines
the associated flags.
Consider the following example from loop-unroll.c where an informative message about a loop (along with its location) is printed when any of the following flags is enabled
int report_flags = MSG_OPTIMIZED_LOCATIONS | TDF_RTL | TDF_DETAILS; dump_printf_loc (report_flags, locus, "loop turned into non-loop; it never loops.\n");
Output basic block.
Output generic expression.
Output gimple statement.
Note that the above methods also have variants prefixed with
_loc, such as
dump_printf_loc, which are similar except
they also output the source location information.