diff options
Diffstat (limited to 'tcg/optimize.c')
| -rw-r--r-- | tcg/optimize.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index 47f41472f1..18046051d3 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -343,9 +343,11 @@ static TCGArg do_constant_folding_2(TCGOpcode op, TCGArg x, TCGArg y) CASE_OP_32_64(ext16u): return (uint16_t)x; + case INDEX_op_ext_i32_i64: case INDEX_op_ext32s_i64: return (int32_t)x; + case INDEX_op_extu_i32_i64: case INDEX_op_ext32u_i64: return (uint32_t)x; @@ -837,6 +839,15 @@ void tcg_optimize(TCGContext *s) mask = temps[args[1]].mask & mask; break; + case INDEX_op_ext_i32_i64: + if ((temps[args[1]].mask & 0x80000000) != 0) { + break; + } + case INDEX_op_extu_i32_i64: + /* We do not compute affected as it is a size changing op. */ + mask = (uint32_t)temps[args[1]].mask; + break; + CASE_OP_32_64(andc): /* Known-zeros does not imply known-ones. Therefore unless args[2] is constant, we can't infer anything from it. */ @@ -1015,6 +1026,8 @@ void tcg_optimize(TCGContext *s) CASE_OP_32_64(ext16u): case INDEX_op_ext32s_i64: case INDEX_op_ext32u_i64: + case INDEX_op_ext_i32_i64: + case INDEX_op_extu_i32_i64: if (temp_is_const(args[1])) { tmp = do_constant_folding(opc, temps[args[1]].val, 0); tcg_opt_gen_movi(s, op, args, args[0], tmp); |