diff options
Diffstat (limited to 'gcc/target.def')
| -rw-r--r-- | gcc/target.def | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/target.def b/gcc/target.def index caf1cb6..f6e42a1 100644 --- a/gcc/target.def +++ b/gcc/target.def @@ -3597,6 +3597,23 @@ normally defined in @file{libgcc2.c}.", tree, (void), default_external_stack_protect_fail) +DEFHOOK +(can_use_doloop_p, + "Return true if it is possible to use low-overhead loops (@code{doloop_end}\n\ +and @code{doloop_begin}) for a particular loop. @var{iterations} gives the\n\ +exact number of iterations, or 0 if not known. @var{iterations_max} gives\n\ +the maximum number of iterations, or 0 if not known. @var{loop_depth} is\n\ +the nesting depth of the loop, with 1 for innermost loops, 2 for loops that\n\ +contain innermost loops, and so on. @var{entered_at_top} is true if the\n\ +loop is only entered from the top.\n\ +\n\ +This hook is only used if @code{doloop_end} is available. The default\n\ +implementation returns true. You can use @code{can_use_doloop_if_innermost}\n\ +if the loop must be the innermost, and if there are no other restrictions.", + bool, (double_int iterations, double_int iterations_max, + unsigned int loop_depth, bool entered_at_top), + hook_bool_dint_dint_uint_bool_true) + /* Returns NULL if target supports the insn within a doloop block, otherwise it returns an error message. */ DEFHOOK |