diff options
| -rw-r--r-- | tcg/optimize.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index 4bea8a56ef..0b1dd13a63 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -655,6 +655,63 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, } } break; + CASE_OP_32_64(xor): + CASE_OP_32_64(nand): + if (temps[args[1]].state != TCG_TEMP_CONST + && temps[args[2]].state == TCG_TEMP_CONST + && temps[args[2]].val == -1) { + i = 1; + goto try_not; + } + break; + CASE_OP_32_64(nor): + if (temps[args[1]].state != TCG_TEMP_CONST + && temps[args[2]].state == TCG_TEMP_CONST + && temps[args[2]].val == 0) { + i = 1; + goto try_not; + } + break; + CASE_OP_32_64(andc): + if (temps[args[2]].state != TCG_TEMP_CONST + && temps[args[1]].state == TCG_TEMP_CONST + && temps[args[1]].val == -1) { + i = 2; + goto try_not; + } + break; + CASE_OP_32_64(orc): + CASE_OP_32_64(eqv): + if (temps[args[2]].state != TCG_TEMP_CONST + && temps[args[1]].state == TCG_TEMP_CONST + && temps[args[1]].val == 0) { + i = 2; + goto try_not; + } + break; + try_not: + { + TCGOpcode not_op; + bool have_not; + + if (def->flags & TCG_OPF_64BIT) { + not_op = INDEX_op_not_i64; + have_not = TCG_TARGET_HAS_not_i64; + } else { + not_op = INDEX_op_not_i32; + have_not = TCG_TARGET_HAS_not_i32; + } + if (!have_not) { + break; + } + s->gen_opc_buf[op_index] = not_op; + reset_temp(args[0]); + gen_args[0] = args[0]; + gen_args[1] = args[i]; + args += 3; + gen_args += 2; + continue; + } default: break; } |