target/arm: Implement SME BFMUL
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20260826174213.614571-14-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Richard Henderson committed
Aug 26, 2026 at 10:42 UTC
13146f8ecbc36f1c4ba8d0a58dde747dc75f0f14
2 files changed
+24
-4
target/arm/tcg/sme.decode
+20
-4
@@ -296,10 +296,18 @@ SQDMULH_n1 1100000 1 .. 10 .... 1010.1 00000 .... 0 @z2z_4x1
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FSCALE_n1 1100000 1 .. 10 .... 1010.0 01100 .... 0 @z2z_4x1
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}
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-FMUL_n1 1100000 1 esz:2 1 zm:4 0 111010 ....0 ....0 \
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+{
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+ BFMUL_n1 1100000 1 00 1 zm:4 0 111010 ....0 ....0 \
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+ &zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2 esz=0
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+ FMUL_n1 1100000 1 esz:2 1 zm:4 0 111010 ....0 ....0 \
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&zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2
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-FMUL_n1 1100000 1 esz:2 1 zm:4 1 111010 ...00 ...00 \
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+}
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+{
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+ BFMUL_n1 1100000 1 00 1 zm:4 1 111010 ...00 ...00 \
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+ &zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4 esz=0
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+ FMUL_n1 1100000 1 esz:2 1 zm:4 1 111010 ...00 ...00 \
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&zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4
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+}
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### SME2 Multi-vector Multiple Vectors SVE Destructive
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@@ -380,10 +388,18 @@ FAMIN_nn 1100000 1 .. 1 ..... 1011.0 01010 .... 1 @z2z_4x4
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FSCALE_nn 1100000 1 .. 1 ..... 1011.0 01100 .... 0 @z2z_4x4
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}
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-FMUL_nn 1100000 1 esz:2 1 ....0 111001 ....0 ....0 \
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+{
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+ BFMUL_nn 1100000 1 00 1 ....0 111001 ....0 ....0 \
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+ &zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2 zm=%zm_ax2 esz=0
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+ FMUL_nn 1100000 1 esz:2 1 ....0 111001 ....0 ....0 \
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&zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2 zm=%zm_ax2
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-FMUL_nn 1100000 1 esz:2 1 ...01 111001 ...00 ...00 \
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+}
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+{
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+ BFMUL_nn 1100000 1 00 1 ...01 111001 ...00 ...00 \
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+ &zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4 zm=%zm_ax4 esz=0
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+ FMUL_nn 1100000 1 esz:2 1 ...01 111001 ...00 ...00 \
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&zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4 zm=%zm_ax4
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+}
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### SME2 Multi-vector Multiple and Single Array Vectors
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target/arm/tcg/translate-sme.c
+4
@@ -903,6 +903,10 @@ static gen_helper_gvec_3_ptr * const f_vector_fmul[4] = {
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};
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TRANS_FEAT(FMUL_n1, aa64_sme2p2, do_zzz_n1_fpst, a, f_vector_fmul[a->esz])
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TRANS_FEAT(FMUL_nn, aa64_sme2p2, do_zzz_nn_fpst, a, f_vector_fmul[a->esz])
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+TRANS_FEAT(BFMUL_n1, aa64_sme2_sve_bfscale, do_zzz_n1_fpst, a,
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+ gen_helper_gvec_fmul_b16)
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+TRANS_FEAT(BFMUL_nn, aa64_sme2_sve_bfscale, do_zzz_nn_fpst, a,
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+ gen_helper_gvec_fmul_b16)
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/* Add/Sub vector Z[m] to each Z[n*N] with result in ZA[d*N]. */
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static bool do_azz_n1(DisasContext *s, arg_azz_n *a, int esz,