From 1d0216c8b79931cffcc5599b8a9a4f6eaf86d2b7 Mon Sep 17 00:00:00 2001 From: Richard Sandiford Date: Sat, 9 Nov 2013 11:42:16 +0000 Subject: target.def (can_use_doloop_p): New hook. gcc/ * target.def (can_use_doloop_p): New hook. * doc/tm.texi.in (TARGET_CAN_USE_DOLOOP_P): Add. * doc/tm.texi: Regenerate. * doc/md.texi (doloop_begin, doloop_end): Update documentation. * hooks.h (hook_bool_dint_dint_uint_true): Declare. * hooks.c (hook_bool_dint_dint_uint_true): New function. * targhooks.h (can_use_doloop_if_innermost): Declare. * targhooks.c (can_use_doloop_if_innermost): New function. * target.h: Include double-int.h. * loop-doloop.c (doloop_optimize): Call targetm.can_use_doloop_p. Remove iteration count, maximum iteration count, loop depth and enter-at-top inputs from doloop_begin and doloop_end. * config/arc/arc.md (doloop_begin, doloop_end): Update for new interface. * config/arc/arc.c (arc_can_use_doloop_p): New function. (TARGET_CAN_USE_DOLOOP_P): Define. * config/arm/thumb2.md (doloop_end): Update for new interface. * config/arm/arm.c (TARGET_CAN_USE_DOLOOP_P): Define. * config/bfin/bfin.md (doloop_end): Update for new interface. * config/bfin/bfin.c (bfin_can_use_doloop_p): New function. (TARGET_CAN_USE_DOLOOP_P): Define. * config/c6x/c6x.md (doloop_end): Update for new interface. * config/ia64/ia64.md (doloop_end): Update for new interface. * config/ia64/ia64.c (TARGET_CAN_USE_DOLOOP_P): Define. * config/mep/mep.md (doloop_begin, doloop_end): Update for new interface. * config/mep/mep.c (mep_emit_doloop): Likewise. (TARGET_CAN_USE_DOLOOP_P): Define. * config/rs6000/rs6000.md (doloop_end): Update for new interface. * config/rs6000/rs6000.c (TARGET_CAN_USE_DOLOOP_P): Define. * config/s390/s390.md (doloop_end): Update for new interface. * config/sh/sh.md (doloop_end): Likewise. * config/spu/spu.md (doloop_end): Likewise. * config/spu/spu.c (TARGET_CAN_USE_DOLOOP_P): Define. * config/tilegx/tilegx.md (doloop_end): Update for new interface. * config/tilegx/tilegx.c (TARGET_CAN_USE_DOLOOP_P): Define. * config/tilepro/tilepro.md (doloop_end): Update for new interface. * config/tilepro/tilepro.c (TARGET_CAN_USE_DOLOOP_P): Define. * config/v850/v850.md (doloop_begin, doloop_end): Update for new interface. * config/v850/v850.c (TARGET_CAN_USE_DOLOOP_P): Define. From-SVN: r204614 --- gcc/target.def | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'gcc/target.def') 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 -- cgit v1.1