Re: [PATCH v2 2/3] disas/riscv: Support vabs.v pseudo-instruction

[Daniel Henrique Barboza]

On 8/31/2026 10:29 AM, Mingliang Liu wrote:

Signed-off-by: Mingliang Liu <liumingliang....@bytedance.com>
---

Reviewed-by: Daniel Henrique Barboza <daniel.barb...@oss.qualcomm.com>

  disas/riscv-op.c.inc | 3 ++-
  disas/riscv.c        | 6 ++++++
  2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/disas/riscv-op.c.inc b/disas/riscv-op.c.inc
index 07b56f5d52..425473ee61 100644
--- a/disas/riscv-op.c.inc
+++ b/disas/riscv-op.c.inc
@@ -491,9 +491,10 @@ OP(vaadd_vx, "vaadd.vx", rv_codec_v_r, 
rv_fmt_vd_vs2_rs1_vm)
  OP(vaaddu_vv, "vaaddu.vv", rv_codec_v_r, rv_fmt_vd_vs2_vs1_vm)
  OP(vaaddu_vx, "vaaddu.vx", rv_codec_v_r, rv_fmt_vd_vs2_rs1_vm)
  OP(vabd_vv, "vabd.vv", rv_codec_v_r, rv_fmt_vd_vs2_vs1_vm)
-OP(vabd_vx, "vabd.vx", rv_codec_v_r, rv_fmt_vd_vs2_rs1_vm)
+OP(vabd_vx, "vabd.vx", rv_codec_v_r, rv_fmt_vd_vs2_rs1_vm, rvcp_vabd_vx)
  OP(vabdu_vv, "vabdu.vv", rv_codec_v_r, rv_fmt_vd_vs2_vs1_vm)
  OP(vabdu_vx, "vabdu.vx", rv_codec_v_r, rv_fmt_vd_vs2_rs1_vm)
+OP(vabs_v, "vabs.v", rv_codec_illegal, rv_fmt_vd_vs2_vm)
  OP(vadc_vim, "vadc.vim", rv_codec_v_i, rv_fmt_vd_vs2_imm_vl)
  OP(vadc_vvm, "vadc.vvm", rv_codec_v_r, rv_fmt_vd_vs2_vs1_vl)
  OP(vadc_vxm, "vadc.vxm", rv_codec_v_r, rv_fmt_vd_vs2_rs1_vl)
diff --git a/disas/riscv.c b/disas/riscv.c
index e0a8b3a756..2aecaaa25a 100644
--- a/disas/riscv.c
+++ b/disas/riscv.c
@@ -103,6 +103,7 @@ static const rvc_constraint rvcc_j[] = { rvc_rd_eq_x0, 
rvc_end };
  static const rvc_constraint rvcc_ret[] = { rvc_rs1_eq_ra, rvc_end };
  static const rvc_constraint rvcc_jr[] = { rvc_rd_eq_x0, rvc_imm_eq_zero,
                                            rvc_end };
+static const rvc_constraint rvcc_vabs_v[] = { rvc_rs1_eq_x0, rvc_end };
  static const rvc_constraint rvcc_true[] = { rvc_end };

/* pseudo-instruction metadata */

@@ -242,6 +243,11 @@ static const rv_comp_data rvcp_fsgnjx_q[] = {
      { },
  };

+static const rv_comp_data rvcp_vabd_vx[] = {

+    { &op_vabs_v, rvcc_vabs_v },
+    { },
+};
+
  /* Convert compressed insns into normal insns via pseudo expansion. */
  #define DECOMP(X)  &(const rv_comp_data){ &X, rvcc_true }