diff options
| author | Richard Henderson <rth@twiddle.net> | 2013-02-19 23:52:02 -0800 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2013-02-23 17:25:29 +0000 |
| commit | f1fae40c61fd4558c7d10992c98b4bb47f99e0ed (patch) | |
| tree | 779a39bfc003cd0f1defc0def94746b0bcfd665b /tcg/tcg.c | |
| parent | f402f38f439f17d4361b28248f948a6170d30133 (diff) | |
| download | qemu-f1fae40c61fd4558c7d10992c98b4bb47f99e0ed.tar.gz | |
tcg: Apply life analysis to 64-bit multiword arithmetic ops
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'tcg/tcg.c')
| -rw-r--r-- | tcg/tcg.c | 28 |
1 files changed, 20 insertions, 8 deletions
@@ -1217,7 +1217,7 @@ static inline void tcg_la_bb_end(TCGContext *s, uint8_t *dead_temps, static void tcg_liveness_analysis(TCGContext *s) { int i, op_index, nb_args, nb_iargs, nb_oargs, arg, nb_ops; - TCGOpcode op; + TCGOpcode op, op_new; TCGArg *args; const TCGOpDef *def; uint8_t *dead_temps, *mem_temps; @@ -1324,7 +1324,17 @@ static void tcg_liveness_analysis(TCGContext *s) break; case INDEX_op_add2_i32: + op_new = INDEX_op_add_i32; + goto do_addsub2; case INDEX_op_sub2_i32: + op_new = INDEX_op_sub_i32; + goto do_addsub2; + case INDEX_op_add2_i64: + op_new = INDEX_op_add_i64; + goto do_addsub2; + case INDEX_op_sub2_i64: + op_new = INDEX_op_sub_i64; + do_addsub2: args -= 6; nb_iargs = 4; nb_oargs = 2; @@ -1337,12 +1347,7 @@ static void tcg_liveness_analysis(TCGContext *s) goto do_remove; } /* Create the single operation plus nop. */ - if (op == INDEX_op_add2_i32) { - op = INDEX_op_add_i32; - } else { - op = INDEX_op_sub_i32; - } - s->gen_opc_buf[op_index] = op; + s->gen_opc_buf[op_index] = op = op_new; args[1] = args[2]; args[2] = args[4]; assert(s->gen_opc_buf[op_index + 1] == INDEX_op_nop); @@ -1354,6 +1359,13 @@ static void tcg_liveness_analysis(TCGContext *s) goto do_not_remove; case INDEX_op_mulu2_i32: + case INDEX_op_muls2_i32: + op_new = INDEX_op_mul_i32; + goto do_mul2; + case INDEX_op_mulu2_i64: + case INDEX_op_muls2_i64: + op_new = INDEX_op_mul_i64; + do_mul2: args -= 4; nb_iargs = 2; nb_oargs = 2; @@ -1362,7 +1374,7 @@ static void tcg_liveness_analysis(TCGContext *s) if (dead_temps[args[0]] && !mem_temps[args[0]]) { goto do_remove; } - s->gen_opc_buf[op_index] = op = INDEX_op_mul_i32; + s->gen_opc_buf[op_index] = op = op_new; args[1] = args[2]; args[2] = args[3]; assert(s->gen_opc_buf[op_index + 1] == INDEX_op_nop); |