[PULL 19/29] target/arm: Delete dead code from disas_simd_indexed

[Peter Maydell]

From: Richard Henderson <richard.henderson@linaro.org>

MLA, MLS, SQDMULH, SQRDMULH, were converted with 8db93dcd3def
and f80701cb44d, and this code should have been removed then.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240625183536.1672454-14-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/tcg/translate-a64.c | 93 ----------------------------------
 1 file changed, 93 deletions(-)

diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index 161fa2659c4..6c07aeaf3bd 100644
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -11976,7 +11976,6 @@ static void disas_simd_indexed(DisasContext *s, 
uint32_t insn)
     int h = extract32(insn, 11, 1);
     int rn = extract32(insn, 5, 5);
     int rd = extract32(insn, 0, 5);
-    bool is_long = false;
     int index;
 
     switch (16 * u + opcode) {
@@ -11990,12 +11989,10 @@ static void disas_simd_indexed(DisasContext *s, 
uint32_t insn)
             unallocated_encoding(s);
             return;
         }
-        is_long = true;
         break;
     case 0x03: /* SQDMLAL, SQDMLAL2 */
     case 0x07: /* SQDMLSL, SQDMLSL2 */
     case 0x0b: /* SQDMULL, SQDMULL2 */
-        is_long = true;
         break;
     default:
     case 0x00: /* FMLAL */
@@ -12047,96 +12044,6 @@ static void disas_simd_indexed(DisasContext *s, 
uint32_t insn)
 
     if (size == 3) {
         g_assert_not_reached();
-    } else if (!is_long) {
-        /* 32 bit floating point, or 16 or 32 bit integer.
-         * For the 16 bit scalar case we use the usual Neon helpers and
-         * rely on the fact that 0 op 0 == 0 with no side effects.
-         */
-        TCGv_i32 tcg_idx = tcg_temp_new_i32();
-        int pass, maxpasses;
-
-        if (is_scalar) {
-            maxpasses = 1;
-        } else {
-            maxpasses = is_q ? 4 : 2;
-        }
-
-        read_vec_element_i32(s, tcg_idx, rm, index, size);
-
-        if (size == 1 && !is_scalar) {
-            /* The simplest way to handle the 16x16 indexed ops is to duplicate
-             * the index into both halves of the 32 bit tcg_idx and then use
-             * the usual Neon helpers.
-             */
-            tcg_gen_deposit_i32(tcg_idx, tcg_idx, tcg_idx, 16, 16);
-        }
-
-        for (pass = 0; pass < maxpasses; pass++) {
-            TCGv_i32 tcg_op = tcg_temp_new_i32();
-            TCGv_i32 tcg_res = tcg_temp_new_i32();
-
-            read_vec_element_i32(s, tcg_op, rn, pass, is_scalar ? size : 
MO_32);
-
-            switch (16 * u + opcode) {
-            case 0x10: /* MLA */
-            case 0x14: /* MLS */
-            {
-                static NeonGenTwoOpFn * const fns[2][2] = {
-                    { gen_helper_neon_add_u16, gen_helper_neon_sub_u16 },
-                    { tcg_gen_add_i32, tcg_gen_sub_i32 },
-                };
-                NeonGenTwoOpFn *genfn;
-                bool is_sub = opcode == 0x4;
-
-                if (size == 1) {
-                    gen_helper_neon_mul_u16(tcg_res, tcg_op, tcg_idx);
-                } else {
-                    tcg_gen_mul_i32(tcg_res, tcg_op, tcg_idx);
-                }
-                if (opcode == 0x8) {
-                    break;
-                }
-                read_vec_element_i32(s, tcg_op, rd, pass, MO_32);
-                genfn = fns[size - 1][is_sub];
-                genfn(tcg_res, tcg_op, tcg_res);
-                break;
-            }
-            case 0x0c: /* SQDMULH */
-                if (size == 1) {
-                    gen_helper_neon_qdmulh_s16(tcg_res, tcg_env,
-                                               tcg_op, tcg_idx);
-                } else {
-                    gen_helper_neon_qdmulh_s32(tcg_res, tcg_env,
-                                               tcg_op, tcg_idx);
-                }
-                break;
-            case 0x0d: /* SQRDMULH */
-                if (size == 1) {
-                    gen_helper_neon_qrdmulh_s16(tcg_res, tcg_env,
-                                                tcg_op, tcg_idx);
-                } else {
-                    gen_helper_neon_qrdmulh_s32(tcg_res, tcg_env,
-                                                tcg_op, tcg_idx);
-                }
-                break;
-            default:
-            case 0x01: /* FMLA */
-            case 0x05: /* FMLS */
-            case 0x09: /* FMUL */
-            case 0x19: /* FMULX */
-            case 0x1d: /* SQRDMLAH */
-            case 0x1f: /* SQRDMLSH */
-                g_assert_not_reached();
-            }
-
-            if (is_scalar) {
-                write_fp_sreg(s, rd, tcg_res);
-            } else {
-                write_vec_element_i32(s, tcg_res, rd, pass, MO_32);
-            }
-        }
-
-        clear_vec_high(s, is_q, rd);
     } else {
         /* long ops: 16x16->32 or 32x32->64 */
         TCGv_i64 tcg_res[2];
-- 
2.34.1