diff options
| author | Ghassan Shobaki <ghassan.shobaki@amd.com> | 2009-07-13 22:42:41 +0000 |
|---|---|---|
| committer | Ghassan Shobaki <gshobaki@gcc.gnu.org> | 2009-07-13 22:42:41 +0000 |
| commit | ee4764a88be649f2d18685a229531a595b2e025d (patch) | |
| tree | c7a87beae76242d4de327015672f1d1de55e0afe /gcc/doc | |
| parent | 05682af89f0ed47428f1c9e81357c87b22d04271 (diff) | |
| download | gcc-ee4764a88be649f2d18685a229531a595b2e025d.zip gcc-ee4764a88be649f2d18685a229531a595b2e025d.tar.gz gcc-ee4764a88be649f2d18685a229531a595b2e025d.tar.bz2 | |
2009-07-13 Ghassan Shobaki <ghassan.shobaki@amd.com>
* haifa-sched.c
(rank_for_schedule): Introduced flags to enable/disable
individual scheduling heuristics.
* common.opt: Introduced flags to enable/disable
individual heuristics in the scheduler.
* doc/invoke.texi: Introduced flags to enable/disable
individual heuristics in the scheduler.
From-SVN: r149603
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index b831395..cff2431 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -364,6 +364,10 @@ Objective-C and Objective-C++ Dialects}. -frounding-math -fsched2-use-superblocks @gol -fsched2-use-traces -fsched-spec-load -fsched-spec-load-dangerous @gol -fsched-stalled-insns-dep[=@var{n}] -fsched-stalled-insns[=@var{n}] @gol +-fsched-group-heuristic -fsched-critical-path-heuristic @gol +-fsched-spec-insn-heuristic -fsched-reg-pressure-heuristic @gol +-fsched-rank-heuristic -fsched-last-insn-heuristic @gol +-fsched-dep-count-heuristic @gol -fschedule-insns -fschedule-insns2 -fsection-anchors @gol -fselective-scheduling -fselective-scheduling2 @gol -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops @gol @@ -6229,6 +6233,49 @@ results from the algorithm. This only makes sense when scheduling after register allocation, i.e.@: with @option{-fschedule-insns2} or at @option{-O2} or higher. +@item -fsched-group-heuristic +@opindex fsched-group-heuristic +Enable the group heuristic in the scheduler. This is enabled by default +when scheduling is enabled, i.e.@: with @option{-fschedule-insns} +or @option{-fschedule-insns2} or at @option{-O2} or higher. + +@item -fsched-critical-path-heuristic +@opindex fsched-critical-path-heuristic +Enable the critical-path heuristic in the scheduler. This is enabled +by default when scheduling is enabled, i.e.@: with @option{-fschedule-insns} +or @option{-fschedule-insns2} or at @option{-O2} or higher. + +@item -fsched-spec-insn-heuristic +@opindex fsched-spec-insn-heuristic +Enable the speculative instruction heuristic in the scheduler. This is +enabled by default when scheduling is enabled, i.e.@: with +@option{-fschedule-insns} or @option{-fschedule-insns2} or +at @option{-O2} or higher. + +@item -fsched-reg-pressure-heuristic +@opindex fsched-reg-pressure-heuristic +Enable the register pressure heuristic in the scheduler. This only makes +sense when scheduling before register allocation, i.e.@: +with @option{-fschedule-insns} or at @option{-O2} or higher. + +@item -fsched-rank-heuristic +@opindex fsched-rank-heuristic +Enable the rank heuristic in the scheduler. This is enabled by default +when scheduling is enabled, i.e.@: with @option{-fschedule-insns} +or @option{-fschedule-insns2} or at @option{-O2} or higher. + +@item -fsched-last-insn-heuristic +@opindex fsched-last-insn-heuristic +Enable the last-instruction heuristic in the scheduler. This is enabled +by default when scheduling is enabled, i.e.@: with @option{-fschedule-insns} +or @option{-fschedule-insns2} or at @option{-O2} or higher. + +@item -fsched-dep-count-heuristic +@opindex fsched-dep-count-heuristic +Enable the dependent-count heuristic in the scheduler. This is enabled +by default when scheduling is enabled, i.e.@: with @option{-fschedule-insns} +or @option{-fschedule-insns2} or at @option{-O2} or higher. + @item -fsched2-use-traces @opindex fsched2-use-traces Use @option{-fsched2-use-superblocks} algorithm when scheduling after register |