From: Vladimir Makarov Date: Mon, 6 Dec 2010 22:11:46 +0000 (+0000) Subject: ira.c (update_equiv_regs): Prohibit move insns if pressure-sensitive scheduling was... X-Git-Tag: releases/gcc-4.6.0~2100 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0cad482785359d4687af81f8c3b273c6837560aa;p=thirdparty%2Fgcc.git ira.c (update_equiv_regs): Prohibit move insns if pressure-sensitive scheduling was done. 2010-12-06 Vladimir Makarov * ira.c (update_equiv_regs): Prohibit move insns if pressure-sensitive scheduling was done. From-SVN: r167519 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b6269f71a29e..d996d26a69c6 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 d37247f55b12..df86bb5965d5 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