From 0398c6c9724f21e8fa07e0f28f9310baf26b43ff Mon Sep 17 00:00:00 2001 From: vmakarov Date: Mon, 6 Dec 2010 22:11:46 +0000 Subject: [PATCH] 2010-12-06 Vladimir Makarov * ira.c (update_equiv_regs): Prohibit move insns if pressure-sensitive scheduling was done. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167519 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 5 +++++ gcc/ira.c | 8 +++++++- 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b6269f71a29..d996d26a69c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2010-12-06 Vladimir Makarov + + * ira.c (update_equiv_regs): Prohibit move insns if + pressure-sensitive scheduling was done. + 2010-12-06 Nicola Pero * c-parser.c (c_parser_for_statement): Use c_fully_fold() instead diff --git a/gcc/ira.c b/gcc/ira.c index d37247f55b1..df86bb5965d 100644 --- a/gcc/ira.c +++ b/gcc/ira.c @@ -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 -- 2.11.4.GIT