diff mbox series

[PULL,23/29] target/arm: Convert Neon VSRA, VSRI, VRSHR, VRSRA 2-reg-shift insns to decodetree

Message ID 20200605165007.12095-24-peter.maydell@linaro.org
State New
Headers show
Series [PULL,01/29] hw/ssi/imx_spi: changed while statement to prevent underflow | expand

Commit Message

Peter Maydell June 5, 2020, 4:50 p.m. UTC 
Convert the VSRA, VSRI, VRSHR, VRSRA 2-reg-shift insns to decodetree.
(These are the last instructions in the group that are vectorized;
the rest all require looping over each element.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200522145520.6778-4-peter.maydell@linaro.org
---
 target/arm/neon-dp.decode       | 35 ++++++++++++++++++++++
 target/arm/translate-neon.inc.c |  7 +++++
 target/arm/translate.c          | 52 +++------------------------------
 3 files changed, 46 insertions(+), 48 deletions(-)
diff mbox series

Patch

diff --git a/target/arm/neon-dp.decode b/target/arm/neon-dp.decode
index 1b877cc68f6..659cf139303 100644
--- a/target/arm/neon-dp.decode
+++ b/target/arm/neon-dp.decode
@@ -242,6 +242,41 @@  VSHR_U_2sh       1111 001 1 1 . ...... .... 0000 . . . 1 .... @2reg_shr_s
 VSHR_U_2sh       1111 001 1 1 . ...... .... 0000 . . . 1 .... @2reg_shr_h
 VSHR_U_2sh       1111 001 1 1 . ...... .... 0000 . . . 1 .... @2reg_shr_b
 
+VSRA_S_2sh       1111 001 0 1 . ...... .... 0001 . . . 1 .... @2reg_shr_d
+VSRA_S_2sh       1111 001 0 1 . ...... .... 0001 . . . 1 .... @2reg_shr_s
+VSRA_S_2sh       1111 001 0 1 . ...... .... 0001 . . . 1 .... @2reg_shr_h
+VSRA_S_2sh       1111 001 0 1 . ...... .... 0001 . . . 1 .... @2reg_shr_b
+
+VSRA_U_2sh       1111 001 1 1 . ...... .... 0001 . . . 1 .... @2reg_shr_d
+VSRA_U_2sh       1111 001 1 1 . ...... .... 0001 . . . 1 .... @2reg_shr_s
+VSRA_U_2sh       1111 001 1 1 . ...... .... 0001 . . . 1 .... @2reg_shr_h
+VSRA_U_2sh       1111 001 1 1 . ...... .... 0001 . . . 1 .... @2reg_shr_b
+
+VRSHR_S_2sh      1111 001 0 1 . ...... .... 0010 . . . 1 .... @2reg_shr_d
+VRSHR_S_2sh      1111 001 0 1 . ...... .... 0010 . . . 1 .... @2reg_shr_s
+VRSHR_S_2sh      1111 001 0 1 . ...... .... 0010 . . . 1 .... @2reg_shr_h
+VRSHR_S_2sh      1111 001 0 1 . ...... .... 0010 . . . 1 .... @2reg_shr_b
+
+VRSHR_U_2sh      1111 001 1 1 . ...... .... 0010 . . . 1 .... @2reg_shr_d
+VRSHR_U_2sh      1111 001 1 1 . ...... .... 0010 . . . 1 .... @2reg_shr_s
+VRSHR_U_2sh      1111 001 1 1 . ...... .... 0010 . . . 1 .... @2reg_shr_h
+VRSHR_U_2sh      1111 001 1 1 . ...... .... 0010 . . . 1 .... @2reg_shr_b
+
+VRSRA_S_2sh      1111 001 0 1 . ...... .... 0011 . . . 1 .... @2reg_shr_d
+VRSRA_S_2sh      1111 001 0 1 . ...... .... 0011 . . . 1 .... @2reg_shr_s
+VRSRA_S_2sh      1111 001 0 1 . ...... .... 0011 . . . 1 .... @2reg_shr_h
+VRSRA_S_2sh      1111 001 0 1 . ...... .... 0011 . . . 1 .... @2reg_shr_b
+
+VRSRA_U_2sh      1111 001 1 1 . ...... .... 0011 . . . 1 .... @2reg_shr_d
+VRSRA_U_2sh      1111 001 1 1 . ...... .... 0011 . . . 1 .... @2reg_shr_s
+VRSRA_U_2sh      1111 001 1 1 . ...... .... 0011 . . . 1 .... @2reg_shr_h
+VRSRA_U_2sh      1111 001 1 1 . ...... .... 0011 . . . 1 .... @2reg_shr_b
+
+VSRI_2sh         1111 001 1 1 . ...... .... 0100 . . . 1 .... @2reg_shr_d
+VSRI_2sh         1111 001 1 1 . ...... .... 0100 . . . 1 .... @2reg_shr_s
+VSRI_2sh         1111 001 1 1 . ...... .... 0100 . . . 1 .... @2reg_shr_h
+VSRI_2sh         1111 001 1 1 . ...... .... 0100 . . . 1 .... @2reg_shr_b
+
 VSHL_2sh         1111 001 0 1 . ...... .... 0101 . . . 1 .... @2reg_shl_d
 VSHL_2sh         1111 001 0 1 . ...... .... 0101 . . . 1 .... @2reg_shl_s
 VSHL_2sh         1111 001 0 1 . ...... .... 0101 . . . 1 .... @2reg_shl_h
diff --git a/target/arm/translate-neon.inc.c b/target/arm/translate-neon.inc.c
index 8693b9aa99d..28688000594 100644
--- a/target/arm/translate-neon.inc.c
+++ b/target/arm/translate-neon.inc.c
@@ -1258,6 +1258,13 @@  static bool do_vector_2sh(DisasContext *s, arg_2reg_shift *a, GVecGen2iFn *fn)
 
 DO_2SH(VSHL, tcg_gen_gvec_shli)
 DO_2SH(VSLI, gen_gvec_sli)
+DO_2SH(VSRI, gen_gvec_sri)
+DO_2SH(VSRA_S, gen_gvec_ssra)
+DO_2SH(VSRA_U, gen_gvec_usra)
+DO_2SH(VRSHR_S, gen_gvec_srshr)
+DO_2SH(VRSHR_U, gen_gvec_urshr)
+DO_2SH(VRSRA_S, gen_gvec_srsra)
+DO_2SH(VRSRA_U, gen_gvec_ursra)
 
 static bool trans_VSHR_S_2sh(DisasContext *s, arg_2reg_shift *a)
 {
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 4acc94e3cbc..2d08c644839 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -5297,6 +5297,10 @@  static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
 
             switch (op) {
             case 0: /* VSHR */
+            case 1: /* VSRA */
+            case 2: /* VRSHR */
+            case 3: /* VRSRA */
+            case 4: /* VSRI */
             case 5: /* VSHL, VSLI */
                 return 1; /* handled by decodetree */
             default:
@@ -5330,54 +5334,6 @@  static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
                     shift = shift - (1 << (size + 3));
                 }
 
-                switch (op) {
-                case 1:  /* VSRA */
-                    /* Right shift comes here negative.  */
-                    shift = -shift;
-                    if (u) {
-                        gen_gvec_usra(size, rd_ofs, rm_ofs, shift,
-                                      vec_size, vec_size);
-                    } else {
-                        gen_gvec_ssra(size, rd_ofs, rm_ofs, shift,
-                                      vec_size, vec_size);
-                    }
-                    return 0;
-
-                case 2: /* VRSHR */
-                    /* Right shift comes here negative.  */
-                    shift = -shift;
-                    if (u) {
-                        gen_gvec_urshr(size, rd_ofs, rm_ofs, shift,
-                                       vec_size, vec_size);
-                    } else {
-                        gen_gvec_srshr(size, rd_ofs, rm_ofs, shift,
-                                       vec_size, vec_size);
-                    }
-                    return 0;
-
-                case 3: /* VRSRA */
-                    /* Right shift comes here negative.  */
-                    shift = -shift;
-                    if (u) {
-                        gen_gvec_ursra(size, rd_ofs, rm_ofs, shift,
-                                       vec_size, vec_size);
-                    } else {
-                        gen_gvec_srsra(size, rd_ofs, rm_ofs, shift,
-                                       vec_size, vec_size);
-                    }
-                    return 0;
-
-                case 4: /* VSRI */
-                    if (!u) {
-                        return 1;
-                    }
-                    /* Right shift comes here negative.  */
-                    shift = -shift;
-                    gen_gvec_sri(size, rd_ofs, rm_ofs, shift,
-                                 vec_size, vec_size);
-                    return 0;
-                }
-
                 if (size == 3) {
                     count = q + 1;
                 } else {