diff options
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/optimize.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index 0fd7db3..0a55352 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -752,6 +752,45 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, } goto do_default; + case INDEX_op_brcond2_i32: + /* Simplify LT/GE comparisons vs zero to a single compare + vs the high word of the input. */ + if ((args[4] == TCG_COND_LT || args[4] == TCG_COND_GE) + && temps[args[2]].state == TCG_TEMP_CONST + && temps[args[3]].state == TCG_TEMP_CONST + && temps[args[2]].val == 0 + && temps[args[3]].val == 0) { + gen_opc_buf[op_index] = INDEX_op_brcond_i32; + gen_args[0] = args[1]; + gen_args[1] = args[3]; + gen_args[2] = args[4]; + gen_args[3] = args[5]; + gen_args += 4; + args += 6; + memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); + break; + } + goto do_default; + + case INDEX_op_setcond2_i32: + /* Simplify LT/GE comparisons vs zero to a single compare + vs the high word of the input. */ + if ((args[5] == TCG_COND_LT || args[5] == TCG_COND_GE) + && temps[args[3]].state == TCG_TEMP_CONST + && temps[args[4]].state == TCG_TEMP_CONST + && temps[args[3]].val == 0 + && temps[args[4]].val == 0) { + gen_opc_buf[op_index] = INDEX_op_setcond_i32; + gen_args[0] = args[0]; + gen_args[1] = args[2]; + gen_args[2] = args[4]; + gen_args[3] = args[5]; + gen_args += 4; + args += 6; + break; + } + goto do_default; + case INDEX_op_call: nb_call_args = (args[0] >> 16) + (args[0] & 0xffff); if (!(args[nb_call_args + 1] & (TCG_CALL_CONST | TCG_CALL_PURE))) { |
