diff options
Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 83bd9ab..9edb006 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -6590,14 +6590,14 @@ debug output to. @var{verbose} is the verbose level provided by was scheduled. @end deftypefn -@deftypefn {Target Hook} int TARGET_SCHED_ADJUST_COST (rtx_insn *@var{insn}, rtx @var{link}, rtx_insn *@var{dep_insn}, int @var{cost}) +@deftypefn {Target Hook} int TARGET_SCHED_ADJUST_COST (rtx_insn *@var{insn}, int @var{dep_type1}, rtx_insn *@var{dep_insn}, int @var{cost}, unsigned int @var{dw}) This function corrects the value of @var{cost} based on the -relationship between @var{insn} and @var{dep_insn} through the -dependence @var{link}. It should return the new value. The default -is to make no adjustment to @var{cost}. This can be used for example -to specify to the scheduler using the traditional pipeline description -that an output- or anti-dependence does not incur the same cost as a -data-dependence. If the scheduler using the automaton based pipeline +relationship between @var{insn} and @var{dep_insn} through a +dependence of type dep_type, and strength @var{dw}. It should return the new +value. The default is to make no adjustment to @var{cost}. This can be +used for example to specify to the scheduler using the traditional pipeline +description that an output- or anti-dependence does not incur the same cost +as a data-dependence. If the scheduler using the automaton based pipeline description, the cost of anti-dependence is zero and the cost of output-dependence is maximum of one and the difference of latency times of the first and the second insns. If these values are not |