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target/arm: Implement bfloat widening fma (vector)

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This is BFMLAL{B,T} for both AArch64 AdvSIMD and SVE,
and VFMA{B,T}.BF16 for AArch32 NEON.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525225817.400336-10-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-25 15:58:14 -07:00 • committed by Peter Maydell
parent 81266a1f58
commit 5693887f2e
7 changed files with 73 additions and 4 deletions
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13
target/arm/translate-a64.c
View file

@ -12242,9 +12242,10 @@ static void disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn)
}
feature = dc_isar_feature(aa64_bf16, s);
break;
case 0x1f: /* BFDOT */
case 0x1f:
switch (size) {
case 1:
case 1: /* BFDOT */
case 3: /* BFMLAL{B,T} */
feature = dc_isar_feature(aa64_bf16, s);
break;
default:
@ -12338,11 +12339,15 @@ static void disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn)
case 0xd: /* BFMMLA */
gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, 0, gen_helper_gvec_bfmmla);
return;
case 0xf: /* BFDOT */
case 0xf:
switch (size) {
case 1:
case 1: /* BFDOT */
gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, 0, gen_helper_gvec_bfdot);
break;
case 3: /* BFMLAL{B,T} */
gen_gvec_op4_fpst(s, 1, rd, rn, rm, rd, false, is_q,
gen_helper_gvec_bfmlal);
break;
default:
g_assert_not_reached();
}