It seems that tcg_reg_alloc_op() set const_args[i] wrong value when instructions imm is 0. The LoongArch tcg_out_vec_op() cmp_vec use the wrong const_args[2]. e.g The wrong const_args[2] is 0. IN: vslti.w v5, v4, 0x0 OUT: vslt.w v1, v1, v0
The right const_args[2] is 1. IN: vslti.w v5, v4, 0x0 OUT: vslti.w v1, v1, 0x0 Fixes: https://gitlab.com/qemu-project/qemu/-/issues/2136 Signed-off-by: Song Gao <gaos...@loongson.cn> --- tcg/tcg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tcg/tcg.c b/tcg/tcg.c index e2c38f6d11..5b290123bc 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -4808,7 +4808,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCGOp *op) arg_ct = &def->args_ct[i]; ts = arg_temp(arg); - if (ts->val_type == TEMP_VAL_CONST + if ((ts->val_type == TEMP_VAL_CONST || ts->kind == TEMP_CONST) && tcg_target_const_match(ts->val, ts->type, arg_ct->ct, TCGOP_VECE(op))) { /* constant is OK for instruction */ const_args[i] = 1; -- 2.25.1
