diff options
Diffstat (limited to 'tcg/optimize.c')
| -rw-r--r-- | tcg/optimize.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index 3a504a1961..6b21845f35 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -859,6 +859,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, break; CASE_OP_32_64(setcond): + case INDEX_op_setcond2_i32: mask = 1; break; @@ -1193,11 +1194,13 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, tmp = do_constant_folding_cond2(&args[0], &args[2], args[4]); if (tmp != 2) { if (tmp) { + do_brcond_true: reset_all_temps(nb_temps); s->gen_opc_buf[op_index] = INDEX_op_br; gen_args[0] = args[5]; gen_args += 1; } else { + do_brcond_false: s->gen_opc_buf[op_index] = INDEX_op_nop; } } else if ((args[4] == TCG_COND_LT || args[4] == TCG_COND_GE) @@ -1207,6 +1210,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, && temps[args[3]].val == 0) { /* Simplify LT/GE comparisons vs zero to a single compare vs the high word of the input. */ + do_brcond_high: reset_all_temps(nb_temps); s->gen_opc_buf[op_index] = INDEX_op_brcond_i32; gen_args[0] = args[1]; @@ -1214,6 +1218,49 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, gen_args[2] = args[4]; gen_args[3] = args[5]; gen_args += 4; + } else if (args[4] == TCG_COND_EQ) { + /* Simplify EQ comparisons where one of the pairs + can be simplified. */ + tmp = do_constant_folding_cond(INDEX_op_brcond_i32, + args[0], args[2], TCG_COND_EQ); + if (tmp == 0) { + goto do_brcond_false; + } else if (tmp == 1) { + goto do_brcond_high; + } + tmp = do_constant_folding_cond(INDEX_op_brcond_i32, + args[1], args[3], TCG_COND_EQ); + if (tmp == 0) { + goto do_brcond_false; + } else if (tmp != 1) { + goto do_default; + } + do_brcond_low: + reset_all_temps(nb_temps); + s->gen_opc_buf[op_index] = INDEX_op_brcond_i32; + gen_args[0] = args[0]; + gen_args[1] = args[2]; + gen_args[2] = args[4]; + gen_args[3] = args[5]; + gen_args += 4; + } else if (args[4] == TCG_COND_NE) { + /* Simplify NE comparisons where one of the pairs + can be simplified. */ + tmp = do_constant_folding_cond(INDEX_op_brcond_i32, + args[0], args[2], TCG_COND_NE); + if (tmp == 0) { + goto do_brcond_high; + } else if (tmp == 1) { + goto do_brcond_true; + } + tmp = do_constant_folding_cond(INDEX_op_brcond_i32, + args[1], args[3], TCG_COND_NE); + if (tmp == 0) { + goto do_brcond_low; + } else if (tmp == 1) { + goto do_brcond_true; + } + goto do_default; } else { goto do_default; } @@ -1223,6 +1270,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, case INDEX_op_setcond2_i32: tmp = do_constant_folding_cond2(&args[1], &args[3], args[5]); if (tmp != 2) { + do_setcond_const: s->gen_opc_buf[op_index] = INDEX_op_movi_i32; tcg_opt_gen_movi(gen_args, args[0], tmp); gen_args += 2; @@ -1233,13 +1281,59 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, && temps[args[4]].val == 0) { /* Simplify LT/GE comparisons vs zero to a single compare vs the high word of the input. */ + do_setcond_high: s->gen_opc_buf[op_index] = INDEX_op_setcond_i32; reset_temp(args[0]); + temps[args[0]].mask = 1; gen_args[0] = args[0]; gen_args[1] = args[2]; gen_args[2] = args[4]; gen_args[3] = args[5]; gen_args += 4; + } else if (args[5] == TCG_COND_EQ) { + /* Simplify EQ comparisons where one of the pairs + can be simplified. */ + tmp = do_constant_folding_cond(INDEX_op_setcond_i32, + args[1], args[3], TCG_COND_EQ); + if (tmp == 0) { + goto do_setcond_const; + } else if (tmp == 1) { + goto do_setcond_high; + } + tmp = do_constant_folding_cond(INDEX_op_setcond_i32, + args[2], args[4], TCG_COND_EQ); + if (tmp == 0) { + goto do_setcond_high; + } else if (tmp != 1) { + goto do_default; + } + do_setcond_low: + reset_temp(args[0]); + temps[args[0]].mask = 1; + s->gen_opc_buf[op_index] = INDEX_op_setcond_i32; + gen_args[0] = args[0]; + gen_args[1] = args[1]; + gen_args[2] = args[3]; + gen_args[3] = args[5]; + gen_args += 4; + } else if (args[5] == TCG_COND_NE) { + /* Simplify NE comparisons where one of the pairs + can be simplified. */ + tmp = do_constant_folding_cond(INDEX_op_setcond_i32, + args[1], args[3], TCG_COND_NE); + if (tmp == 0) { + goto do_setcond_high; + } else if (tmp == 1) { + goto do_setcond_const; + } + tmp = do_constant_folding_cond(INDEX_op_setcond_i32, + args[2], args[4], TCG_COND_NE); + if (tmp == 0) { + goto do_setcond_low; + } else if (tmp == 1) { + goto do_setcond_const; + } + goto do_default; } else { goto do_default; } |