diff options
Diffstat (limited to 'tcg/optimize.c')
| -rw-r--r-- | tcg/optimize.c | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index 110b3d1cc2..faedbdbfb8 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -888,6 +888,25 @@ static bool fold_eqv(OptContext *ctx, TCGOp *op) return fold_const2(ctx, op); } +static bool fold_extract2(OptContext *ctx, TCGOp *op) +{ + if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) { + uint64_t v1 = arg_info(op->args[1])->val; + uint64_t v2 = arg_info(op->args[2])->val; + int shr = op->args[3]; + + if (op->opc == INDEX_op_extract2_i64) { + v1 >>= shr; + v2 <<= 64 - shr; + } else { + v1 = (uint32_t)v1 >> shr; + v2 = (int32_t)v2 << (32 - shr); + } + return tcg_opt_gen_movi(ctx, op, op->args[0], v1 | v2); + } + return false; +} + static bool fold_exts(OptContext *ctx, TCGOp *op) { return fold_const1(ctx, op); @@ -1726,23 +1745,6 @@ void tcg_optimize(TCGContext *s) } break; - CASE_OP_32_64(extract2): - if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) { - uint64_t v1 = arg_info(op->args[1])->val; - uint64_t v2 = arg_info(op->args[2])->val; - int shr = op->args[3]; - - if (opc == INDEX_op_extract2_i64) { - tmp = (v1 >> shr) | (v2 << (64 - shr)); - } else { - tmp = (int32_t)(((uint32_t)v1 >> shr) | - ((uint32_t)v2 << (32 - shr))); - } - tcg_opt_gen_movi(&ctx, op, op->args[0], tmp); - continue; - } - break; - default: break; @@ -1777,6 +1779,9 @@ void tcg_optimize(TCGContext *s) CASE_OP_32_64(eqv): done = fold_eqv(&ctx, op); break; + CASE_OP_32_64(extract2): + done = fold_extract2(&ctx, op); + break; CASE_OP_32_64(ext8s): CASE_OP_32_64(ext16s): case INDEX_op_ext32s_i64: |