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target/riscv: rvv-1.0: integer scalar move instructions 

* Remove "vmv.s.x: dothing if rs1 == 0" constraint.
* Add vmv.x.s instruction.

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20211210075704.23951-37-frank.chang@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Frank Chang 2021-12-10 15:56:22 +08:00 committed by Alistair Francis
parent 50bfb45b2c
commit dedc53cbc9
2 changed files with 37 additions and 9 deletions
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3
target/riscv/insn32.decode
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@ -634,8 +634,9 @@ vmsif_m 010100 . ..... 00011 010 ..... 1010111 @r2_vm
vmsof_m 010100 . ..... 00010 010 ..... 1010111 @r2_vm
viota_m 010100 . ..... 10000 010 ..... 1010111 @r2_vm
vid_v 010100 . 00000 10001 010 ..... 1010111 @r1_vm
vmv_x_s 010000 1 ..... 00000 010 ..... 1010111 @r2rd
vmv_s_x 010000 1 00000 ..... 110 ..... 1010111 @r2
vext_x_v 001100 1 ..... ..... 010 ..... 1010111 @r
vmv_s_x 001101 1 00000 ..... 110 ..... 1010111 @r2
vfmv_f_s 001100 1 ..... 00000 001 ..... 1010111 @r2rd
vfmv_s_f 001101 1 00000 ..... 101 ..... 1010111 @r2
vslideup_vx 001110 . ..... ..... 100 ..... 1010111 @r_vm

43
target/riscv/insn_trans/trans_rvv.c.inc
View File

@ -2978,27 +2978,54 @@ static void vec_element_storei(DisasContext *s, int vreg,
store_element(val, cpu_env, endian_ofs(s, vreg, idx), s->sew);
}
/* vmv.x.s rd, vs2 # x[rd] = vs2[0] */
static bool trans_vmv_x_s(DisasContext *s, arg_vmv_x_s *a)
{
if (require_rvv(s) &&
vext_check_isa_ill(s)) {
TCGv_i64 t1;
TCGv dest;
t1 = tcg_temp_new_i64();
dest = tcg_temp_new();
/*
* load vreg and sign-extend to 64 bits,
* then truncate to XLEN bits before storing to gpr.
*/
vec_element_loadi(s, t1, a->rs2, 0, true);
tcg_gen_trunc_i64_tl(dest, t1);
gen_set_gpr(s, a->rd, dest);
tcg_temp_free_i64(t1);
tcg_temp_free(dest);
return true;
}
return false;
}
/* vmv.s.x vd, rs1 # vd[0] = rs1 */
static bool trans_vmv_s_x(DisasContext *s, arg_vmv_s_x *a)
{
if (vext_check_isa_ill(s)) {
if (require_rvv(s) &&
vext_check_isa_ill(s)) {
/* This instruction ignores LMUL and vector register groups */
int maxsz = s->vlen >> 3;
TCGv_i64 t1;
TCGv s1;
TCGLabel *over = gen_new_label();
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_vl, 0, over);
tcg_gen_gvec_dup_imm(SEW64, vreg_ofs(s, a->rd), maxsz, maxsz, 0);
if (a->rs1 == 0) {
goto done;
}
t1 = tcg_temp_new_i64();
tcg_gen_extu_tl_i64(t1, cpu_gpr[a->rs1]);
/*
* load gpr and sign-extend to 64 bits,
* then truncate to SEW bits when storing to vreg.
*/
s1 = get_gpr(s, a->rs1, EXT_NONE);
tcg_gen_ext_tl_i64(t1, s1);
vec_element_storei(s, a->rd, 0, t1);
tcg_temp_free_i64(t1);
mark_vs_dirty(s);
done:
gen_set_label(over);
return true;
}