diff options
author | Richard Henderson <richard.henderson@linaro.org> | 2018-11-27 14:00:35 -0800 |
---|---|---|
committer | Richard Henderson <richard.henderson@linaro.org> | 2018-12-26 06:58:17 +1100 |
commit | f65a061c39cc4f9d088201031050e42eb23d5b2a (patch) | |
tree | 8f158d85a52e82dcae559ee6fce6b8731df2c463 /tcg/tcg.c | |
parent | 2616c8082143373e794b62444bf81754f50dbf6b (diff) |
tcg: Split out more subroutines from liveness_pass_1
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/tcg.c')
-rw-r--r-- | tcg/tcg.c | 35 |
1 files changed, 23 insertions, 12 deletions
@@ -2395,6 +2395,26 @@ static void la_bb_end(TCGContext *s, int ng, int nt) } } +/* liveness analysis: sync globals back to memory. */ +static void la_global_sync(TCGContext *s, int ng) +{ + int i; + + for (i = 0; i < ng; ++i) { + s->temps[i].state |= TS_MEM; + } +} + +/* liveness analysis: sync globals back to memory and kill. */ +static void la_global_kill(TCGContext *s, int ng) +{ + int i; + + for (i = 0; i < ng; i++) { + s->temps[i].state = TS_DEAD | TS_MEM; + } +} + /* Liveness analysis : update the opc_arg_life array to tell if a given input arguments is dead. Instructions updating dead temporaries are removed. */ @@ -2450,15 +2470,9 @@ static void liveness_pass_1(TCGContext *s) if (!(call_flags & (TCG_CALL_NO_WRITE_GLOBALS | TCG_CALL_NO_READ_GLOBALS))) { - /* globals should go back to memory */ - for (i = 0; i < nb_globals; i++) { - s->temps[i].state = TS_DEAD | TS_MEM; - } + la_global_kill(s, nb_globals); } else if (!(call_flags & TCG_CALL_NO_READ_GLOBALS)) { - /* globals should be synced to memory */ - for (i = 0; i < nb_globals; i++) { - s->temps[i].state |= TS_MEM; - } + la_global_sync(s, nb_globals); } /* record arguments that die in this helper */ @@ -2601,10 +2615,7 @@ static void liveness_pass_1(TCGContext *s) if (def->flags & TCG_OPF_BB_END) { la_bb_end(s, nb_globals, nb_temps); } else if (def->flags & TCG_OPF_SIDE_EFFECTS) { - /* globals should be synced to memory */ - for (i = 0; i < nb_globals; i++) { - s->temps[i].state |= TS_MEM; - } + la_global_sync(s, nb_globals); } /* record arguments that die in this opcode */ |