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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fbf2cfd1sm1591695b3a.3.2024.05.24.16.25.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 May 2024 16:25:11 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Subject: [PATCH v2 56/67] target/arm: Convert SHSUB, UHSUB to gvec Date: Fri, 24 May 2024 16:21:10 -0700 Message-Id: <20240524232121.284515-57-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240524232121.284515-1-richard.henderson@linaro.org> References: <20240524232121.284515-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x436.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- target/arm/helper.h | 6 -- target/arm/tcg/translate.h | 4 + target/arm/tcg/gengvec.c | 144 ++++++++++++++++++++++++++++++++ target/arm/tcg/neon_helper.c | 27 ------ target/arm/tcg/translate-a64.c | 17 ++-- target/arm/tcg/translate-neon.c | 4 +- 6 files changed, 157 insertions(+), 45 deletions(-) diff --git a/target/arm/helper.h b/target/arm/helper.h index b26bfcb079..b95f24ed0a 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -274,12 +274,6 @@ DEF_HELPER_2(neon_rhadd_s16, i32, i32, i32) DEF_HELPER_2(neon_rhadd_u16, i32, i32, i32) DEF_HELPER_2(neon_rhadd_s32, s32, s32, s32) DEF_HELPER_2(neon_rhadd_u32, i32, i32, i32) -DEF_HELPER_2(neon_hsub_s8, i32, i32, i32) -DEF_HELPER_2(neon_hsub_u8, i32, i32, i32) -DEF_HELPER_2(neon_hsub_s16, i32, i32, i32) -DEF_HELPER_2(neon_hsub_u16, i32, i32, i32) -DEF_HELPER_2(neon_hsub_s32, s32, s32, s32) -DEF_HELPER_2(neon_hsub_u32, i32, i32, i32) DEF_HELPER_2(neon_pmin_u8, i32, i32, i32) DEF_HELPER_2(neon_pmin_s8, i32, i32, i32) diff --git a/target/arm/tcg/translate.h b/target/arm/tcg/translate.h index dd99d76bf2..315e0afd04 100644 --- a/target/arm/tcg/translate.h +++ b/target/arm/tcg/translate.h @@ -476,6 +476,10 @@ void gen_gvec_shadd(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); void gen_gvec_uhadd(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); +void gen_gvec_shsub(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, + uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); +void gen_gvec_uhsub(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, + uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); void gen_cmtst_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b); void gen_ushl_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b); diff --git a/target/arm/tcg/gengvec.c b/target/arm/tcg/gengvec.c index 0627cec6b2..6a54ad2d21 100644 --- a/target/arm/tcg/gengvec.c +++ b/target/arm/tcg/gengvec.c @@ -1996,3 +1996,147 @@ void gen_gvec_uhadd(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, tcg_debug_assert(vece <= MO_32); tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs, opr_sz, max_sz, &g[vece]); } + +static void gen_shsub8_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b) +{ + TCGv_i64 t = tcg_temp_new_i64(); + + tcg_gen_andc_i64(t, b, a); + tcg_gen_vec_sar8i_i64(a, a, 1); + tcg_gen_vec_sar8i_i64(b, b, 1); + tcg_gen_andi_i64(t, t, dup_const(MO_8, 1)); + tcg_gen_vec_sub8_i64(d, a, b); + tcg_gen_vec_sub8_i64(d, d, t); +} + +static void gen_shsub16_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b) +{ + TCGv_i64 t = tcg_temp_new_i64(); + + tcg_gen_andc_i64(t, b, a); + tcg_gen_vec_sar16i_i64(a, a, 1); + tcg_gen_vec_sar16i_i64(b, b, 1); + tcg_gen_andi_i64(t, t, dup_const(MO_16, 1)); + tcg_gen_vec_sub16_i64(d, a, b); + tcg_gen_vec_sub16_i64(d, d, t); +} + +static void gen_shsub_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b) +{ + TCGv_i32 t = tcg_temp_new_i32(); + + tcg_gen_andc_i32(t, b, a); + tcg_gen_sari_i32(a, a, 1); + tcg_gen_sari_i32(b, b, 1); + tcg_gen_andi_i32(t, t, 1); + tcg_gen_sub_i32(d, a, b); + tcg_gen_sub_i32(d, d, t); +} + +static void gen_shsub_vec(unsigned vece, TCGv_vec d, TCGv_vec a, TCGv_vec b) +{ + TCGv_vec t = tcg_temp_new_vec_matching(d); + + tcg_gen_andc_vec(vece, t, b, a); + tcg_gen_sari_vec(vece, a, a, 1); + tcg_gen_sari_vec(vece, b, b, 1); + tcg_gen_and_vec(vece, t, t, tcg_constant_vec_matching(d, vece, 1)); + tcg_gen_sub_vec(vece, d, a, b); + tcg_gen_sub_vec(vece, d, d, t); +} + +void gen_gvec_shsub(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, + uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz) +{ + static const TCGOpcode vecop_list[] = { + INDEX_op_sari_vec, INDEX_op_sub_vec, 0 + }; + static const GVecGen3 g[4] = { + { .fni8 = gen_shsub8_i64, + .fniv = gen_shsub_vec, + .opt_opc = vecop_list, + .vece = MO_8 }, + { .fni8 = gen_shsub16_i64, + .fniv = gen_shsub_vec, + .opt_opc = vecop_list, + .vece = MO_16 }, + { .fni4 = gen_shsub_i32, + .fniv = gen_shsub_vec, + .opt_opc = vecop_list, + .vece = MO_32 }, + }; + assert(vece <= MO_32); + tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs, opr_sz, max_sz, &g[vece]); +} + +static void gen_uhsub8_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b) +{ + TCGv_i64 t = tcg_temp_new_i64(); + + tcg_gen_andc_i64(t, b, a); + tcg_gen_vec_shr8i_i64(a, a, 1); + tcg_gen_vec_shr8i_i64(b, b, 1); + tcg_gen_andi_i64(t, t, dup_const(MO_8, 1)); + tcg_gen_vec_sub8_i64(d, a, b); + tcg_gen_vec_sub8_i64(d, d, t); +} + +static void gen_uhsub16_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b) +{ + TCGv_i64 t = tcg_temp_new_i64(); + + tcg_gen_andc_i64(t, b, a); + tcg_gen_vec_shr16i_i64(a, a, 1); + tcg_gen_vec_shr16i_i64(b, b, 1); + tcg_gen_andi_i64(t, t, dup_const(MO_16, 1)); + tcg_gen_vec_sub16_i64(d, a, b); + tcg_gen_vec_sub16_i64(d, d, t); +} + +static void gen_uhsub_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b) +{ + TCGv_i32 t = tcg_temp_new_i32(); + + tcg_gen_andc_i32(t, b, a); + tcg_gen_shri_i32(a, a, 1); + tcg_gen_shri_i32(b, b, 1); + tcg_gen_andi_i32(t, t, 1); + tcg_gen_sub_i32(d, a, b); + tcg_gen_sub_i32(d, d, t); +} + +static void gen_uhsub_vec(unsigned vece, TCGv_vec d, TCGv_vec a, TCGv_vec b) +{ + TCGv_vec t = tcg_temp_new_vec_matching(d); + + tcg_gen_andc_vec(vece, t, b, a); + tcg_gen_shri_vec(vece, a, a, 1); + tcg_gen_shri_vec(vece, b, b, 1); + tcg_gen_and_vec(vece, t, t, tcg_constant_vec_matching(d, vece, 1)); + tcg_gen_sub_vec(vece, d, a, b); + tcg_gen_sub_vec(vece, d, d, t); +} + +void gen_gvec_uhsub(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, + uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz) +{ + static const TCGOpcode vecop_list[] = { + INDEX_op_shri_vec, INDEX_op_sub_vec, 0 + }; + static const GVecGen3 g[4] = { + { .fni8 = gen_uhsub8_i64, + .fniv = gen_uhsub_vec, + .opt_opc = vecop_list, + .vece = MO_8 }, + { .fni8 = gen_uhsub16_i64, + .fniv = gen_uhsub_vec, + .opt_opc = vecop_list, + .vece = MO_16 }, + { .fni4 = gen_uhsub_i32, + .fniv = gen_uhsub_vec, + .opt_opc = vecop_list, + .vece = MO_32 }, + }; + assert(vece <= MO_32); + tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs, opr_sz, max_sz, &g[vece]); +} diff --git a/target/arm/tcg/neon_helper.c b/target/arm/tcg/neon_helper.c index defd28a6f7..d1641a5252 100644 --- a/target/arm/tcg/neon_helper.c +++ b/target/arm/tcg/neon_helper.c @@ -206,33 +206,6 @@ uint32_t HELPER(neon_rhadd_u32)(uint32_t src1, uint32_t src2) return dest; } -#define NEON_FN(dest, src1, src2) dest = (src1 - src2) >> 1 -NEON_VOP(hsub_s8, neon_s8, 4) -NEON_VOP(hsub_u8, neon_u8, 4) -NEON_VOP(hsub_s16, neon_s16, 2) -NEON_VOP(hsub_u16, neon_u16, 2) -#undef NEON_FN - -int32_t HELPER(neon_hsub_s32)(int32_t src1, int32_t src2) -{ - int32_t dest; - - dest = (src1 >> 1) - (src2 >> 1); - if ((~src1) & src2 & 1) - dest--; - return dest; -} - -uint32_t HELPER(neon_hsub_u32)(uint32_t src1, uint32_t src2) -{ - uint32_t dest; - - dest = (src1 >> 1) - (src2 >> 1); - if ((~src1) & src2 & 1) - dest--; - return dest; -} - #define NEON_FN(dest, src1, src2) dest = (src1 < src2) ? src1 : src2 NEON_POP(pmin_s8, neon_s8, 4) NEON_POP(pmin_u8, neon_u8, 4) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 00c04425c1..63f7a59f94 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -10967,6 +10967,13 @@ static void disas_simd_3same_int(DisasContext *s, uint32_t insn) } switch (opcode) { + case 0x04: /* SHSUB, UHSUB */ + if (u) { + gen_gvec_fn3(s, is_q, rd, rn, rm, gen_gvec_uhsub, size); + } else { + gen_gvec_fn3(s, is_q, rd, rn, rm, gen_gvec_shsub, size); + } + return; case 0x0c: /* SMAX, UMAX */ if (u) { gen_gvec_fn3(s, is_q, rd, rn, rm, tcg_gen_gvec_umax, size); @@ -11044,16 +11051,6 @@ static void disas_simd_3same_int(DisasContext *s, uint32_t insn) genfn = fns[size][u]; break; } - case 0x4: /* SHSUB, UHSUB */ - { - static NeonGenTwoOpFn * const fns[3][2] = { - { gen_helper_neon_hsub_s8, gen_helper_neon_hsub_u8 }, - { gen_helper_neon_hsub_s16, gen_helper_neon_hsub_u16 }, - { gen_helper_neon_hsub_s32, gen_helper_neon_hsub_u32 }, - }; - genfn = fns[size][u]; - break; - } default: g_assert_not_reached(); } diff --git a/target/arm/tcg/translate-neon.c b/target/arm/tcg/translate-neon.c index 29e5c4a0a3..d59d5804c5 100644 --- a/target/arm/tcg/translate-neon.c +++ b/target/arm/tcg/translate-neon.c @@ -843,6 +843,8 @@ DO_3SAME_NO_SZ_3(VPMAX_U, gen_gvec_umaxp) DO_3SAME_NO_SZ_3(VPMIN_U, gen_gvec_uminp) DO_3SAME_NO_SZ_3(VHADD_S, gen_gvec_shadd) DO_3SAME_NO_SZ_3(VHADD_U, gen_gvec_uhadd) +DO_3SAME_NO_SZ_3(VHSUB_S, gen_gvec_shsub) +DO_3SAME_NO_SZ_3(VHSUB_U, gen_gvec_uhsub) #define DO_3SAME_CMP(INSN, COND) \ static void gen_##INSN##_3s(unsigned vece, uint32_t rd_ofs, \ @@ -953,8 +955,6 @@ DO_SHA2(SHA256SU1, gen_helper_crypto_sha256su1) FUNC(d, tcg_env, n, m); \ } -DO_3SAME_32(VHSUB_S, hsub_s) -DO_3SAME_32(VHSUB_U, hsub_u) DO_3SAME_32(VRHADD_S, rhadd_s) DO_3SAME_32(VRHADD_U, rhadd_u)