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| author | Vladimir Makarov <vmakarov@redhat.com> | 2009-10-22 01:44:39 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2009-10-22 01:44:39 +0000 |
| commit | 7e1e7d4cc65dedaf07bbbb367253b569f2311c66 (patch) | |
| tree | a8f72381ffa5fe5e541724f227760f360d1ef388 /gcc/config | |
| parent | 9f217aad2d8ef4a506d246a1f21fb44b10301ab2 (diff) | |
| download | gcc-7e1e7d4cc65dedaf07bbbb367253b569f2311c66.zip gcc-7e1e7d4cc65dedaf07bbbb367253b569f2311c66.tar.gz gcc-7e1e7d4cc65dedaf07bbbb367253b569f2311c66.tar.bz2 | |
invoke.texi (fira-loop-pressure): Update default value.
2009-10-21 Vladimir Makarov <vmakarov@redhat.com>
* doc/invoke.texi (fira-loop-pressure): Update default value.
* opts.c (decode_options): Remove default value setting for
flag_ira_loop_pressure.
* config/ia64/ia64.c (ia64_override_options): Set
flag_ira_loop_pressure up for -O3.
* config/rs6000/rs6000.c (rs6000_override_options): Ditto.
From-SVN: r153445
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/ia64/ia64.c | 8 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 7 |
2 files changed, 15 insertions, 0 deletions
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c index 75c8f0e..23fc754 100644 --- a/gcc/config/ia64/ia64.c +++ b/gcc/config/ia64/ia64.c @@ -5496,6 +5496,14 @@ ia64_override_options (void) if (TARGET_AUTO_PIC) target_flags |= MASK_CONST_GP; + /* Numerous experiment shows that IRA based loop pressure + calculation works better for RTL loop invariant motion on targets + with enough (>= 32) registers. It is an expensive optimization. + So it is on only for peak performance. */ + if (optimize >= 3) + flag_ira_loop_pressure = 1; + + ia64_flag_schedule_insns2 = flag_schedule_insns_after_reload; flag_schedule_insns_after_reload = 0; diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 8bb9212..9b03a9b 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -2281,6 +2281,13 @@ rs6000_override_options (const char *default_cpu) | MASK_POPCNTD | MASK_VSX | MASK_ISEL | MASK_NO_UPDATE) }; + /* Numerous experiment shows that IRA based loop pressure + calculation works better for RTL loop invariant motion on targets + with enough (>= 32) registers. It is an expensive optimization. + So it is on only for peak performance. */ + if (optimize >= 3) + flag_ira_loop_pressure = 1; + /* Set the pointer size. */ if (TARGET_64BIT) { |