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| author | Vladimir Makarov <vmakarov@redhat.com> | 2010-12-06 22:11:46 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2010-12-06 22:11:46 +0000 |
| commit | 0cad482785359d4687af81f8c3b273c6837560aa (patch) | |
| tree | 4308ebec609bad72b452a714a770499931e308e8 /gcc | |
| parent | 69a9720167ffd3c3ea66187f318f2efbe16e82c5 (diff) | |
| download | gcc-0cad482785359d4687af81f8c3b273c6837560aa.zip gcc-0cad482785359d4687af81f8c3b273c6837560aa.tar.gz gcc-0cad482785359d4687af81f8c3b273c6837560aa.tar.bz2 | |
ira.c (update_equiv_regs): Prohibit move insns if pressure-sensitive scheduling was done.
2010-12-06 Vladimir Makarov <vmakarov@redhat.com>
* ira.c (update_equiv_regs): Prohibit move insns if
pressure-sensitive scheduling was done.
From-SVN: r167519
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/ira.c | 8 |
2 files changed, 12 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b6269f7..d996d26 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2010-12-06 Vladimir Makarov <vmakarov@redhat.com> + + * ira.c (update_equiv_regs): Prohibit move insns if + pressure-sensitive scheduling was done. + 2010-12-06 Nicola Pero <nicola.pero@meta-innovation.com> * c-parser.c (c_parser_for_statement): Use c_fully_fold() instead @@ -2585,7 +2585,13 @@ update_equiv_regs (void) rtx equiv_insn; if (! reg_equiv[regno].replace - || reg_equiv[regno].loop_depth < loop_depth) + || reg_equiv[regno].loop_depth < loop_depth + /* There is no sense to move insns if we did + register pressure-sensitive scheduling was + done because it will not improve allocation + but worsen insn schedule with a big + probability. */ + || (flag_sched_pressure && flag_schedule_insns)) continue; /* reg_equiv[REGNO].replace gets set only when |