Commit 19ecbfd6c3 for qemu.org
commit 19ecbfd6c37a893d608279510de646098b2d8888
Author: Richard Henderson <richard.henderson@linaro.org>
Date: Wed Aug 26 10:41:51 2026 -0700
target/arm: Implement FMUL (multiple/multiple and single vectors)
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20260826174213.614571-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/target/arm/tcg/sme.decode b/target/arm/tcg/sme.decode
index e1bef9987b..60c7cacc10 100644
--- a/target/arm/tcg/sme.decode
+++ b/target/arm/tcg/sme.decode
@@ -219,6 +219,8 @@ UMOPA2_s 1010000 1 10 0 ..... ... ... ..... . 10 .. @op_32
%zd_ax2 1:4 !function=times_2
%zd_ax4 2:3 !function=times_4
+%zn_ax2 6:4 !function=times_2
+%zn_ax4 7:3 !function=times_4
&zzz_en zd zn zm esz n
@@ -288,6 +290,11 @@ SQDMULH_n1 1100000 1 .. 10 .... 1010.1 00000 .... 0 @z2z_4x1
FSCALE_n1 1100000 1 .. 10 .... 1010.0 01100 .... 0 @z2z_2x1
FSCALE_n1 1100000 1 .. 10 .... 1010.0 01100 .... 0 @z2z_4x1
+FMUL_n1 1100000 1 esz:2 1 zm:4 0 111010 ....0 ....0 \
+ &zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2
+FMUL_n1 1100000 1 esz:2 1 zm:4 1 111010 ...00 ...00 \
+ &zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4
+
### SME2 Multi-vector Multiple Vectors SVE Destructive
%zm_ax2 17:4 !function=times_2
@@ -361,6 +368,11 @@ FAMIN_nn 1100000 1 .. 1 ..... 1011.0 01010 .... 1 @z2z_4x4
FSCALE_nn 1100000 1 .. 1 ..... 1011.0 01100 .... 0 @z2z_2x2
FSCALE_nn 1100000 1 .. 1 ..... 1011.0 01100 .... 0 @z2z_4x4
+FMUL_nn 1100000 1 esz:2 1 ....0 111001 ....0 ....0 \
+ &zzz_en n=2 zd=%zd_ax2 zn=%zn_ax2 zm=%zm_ax2
+FMUL_nn 1100000 1 esz:2 1 ...01 111001 ...00 ...00 \
+ &zzz_en n=4 zd=%zd_ax4 zn=%zn_ax4 zm=%zm_ax4
+
### SME2 Multi-vector Multiple and Single Array Vectors
&azz_n n off rv zn zm
@@ -521,9 +533,6 @@ FDOT_n1_hb 11000001 001 1 .... 0 .. 100 ..... 01 ... @azz_nx1_o3 n=4
### SME2 Multi-vector Multiple Array Vectors
-%zn_ax2 6:4 !function=times_2
-%zn_ax4 7:3 !function=times_4
-
@azz_2x2_o3 ........ ... ..... . .. ... ..... .. off:3 \
&azz_n n=2 rv=%mova_rv zn=%zn_ax2 zm=%zm_ax2
@azz_4x4_o3 ........ ... ..... . .. ... ..... .. off:3 \
diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c
index db1950f407..463754b057 100644
--- a/target/arm/tcg/translate-sme.c
+++ b/target/arm/tcg/translate-sme.c
@@ -891,6 +891,15 @@ static gen_helper_gvec_3_ptr * const f_vector_fscale[4] = {
TRANS_FEAT(FSCALE_n1, aa64_sme2_f8cvt, do_zzz_n1_fpst, a, f_vector_fscale[a->esz])
TRANS_FEAT(FSCALE_nn, aa64_sme2_f8cvt, do_zzz_nn_fpst, a, f_vector_fscale[a->esz])
+static gen_helper_gvec_3_ptr * const f_vector_fmul[4] = {
+ NULL,
+ gen_helper_gvec_fmul_h,
+ gen_helper_gvec_fmul_s,
+ gen_helper_gvec_fmul_d,
+};
+TRANS_FEAT(FMUL_n1, aa64_sme2p2, do_zzz_n1_fpst, a, f_vector_fmul[a->esz])
+TRANS_FEAT(FMUL_nn, aa64_sme2p2, do_zzz_nn_fpst, a, f_vector_fmul[a->esz])
+
/* Add/Sub vector Z[m] to each Z[n*N] with result in ZA[d*N]. */
static bool do_azz_n1(DisasContext *s, arg_azz_n *a, int esz,
GVecGen3FnVar *fn)