[v2,024/100] target/arm: Implement SVE2 integer add/subtract long

Message ID 20200618042644.1685561-25-richard.henderson@linaro.org
State New
Headers show
Series
  • target/arm: Implement SVE2
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Commit Message

Richard Henderson June 18, 2020, 4:25 a.m.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
v2: Fix select offsets (laurent desnogues).
---
 target/arm/helper-sve.h    | 24 ++++++++++++++++++++
 target/arm/sve.decode      | 19 ++++++++++++++++
 target/arm/sve_helper.c    | 43 +++++++++++++++++++++++++++++++++++
 target/arm/translate-sve.c | 46 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 132 insertions(+)

-- 
2.25.1

Patch

diff --git a/target/arm/helper-sve.h b/target/arm/helper-sve.h
index be5b0aec5b..d16d85d2d7 100644
--- a/target/arm/helper-sve.h
+++ b/target/arm/helper-sve.h
@@ -1367,6 +1367,30 @@  DEF_HELPER_FLAGS_5(sve_ftmad_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
 DEF_HELPER_FLAGS_5(sve_ftmad_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
 DEF_HELPER_FLAGS_5(sve_ftmad_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)
 
+DEF_HELPER_FLAGS_4(sve2_saddl_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_saddl_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_saddl_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(sve2_ssubl_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_ssubl_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_ssubl_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(sve2_sabdl_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_sabdl_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_sabdl_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(sve2_uaddl_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_uaddl_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_uaddl_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(sve2_usubl_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_usubl_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_usubl_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(sve2_uabdl_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_uabdl_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(sve2_uabdl_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
 DEF_HELPER_FLAGS_4(sve_ld1bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32)
 DEF_HELPER_FLAGS_4(sve_ld2bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32)
 DEF_HELPER_FLAGS_4(sve_ld3bb_r, TCG_CALL_NO_WG, void, env, ptr, tl, i32)
diff --git a/target/arm/sve.decode b/target/arm/sve.decode
index 7a287bd8a6..84fc0ade2c 100644
--- a/target/arm/sve.decode
+++ b/target/arm/sve.decode
@@ -1162,3 +1162,22 @@  SUQADD          01000100 .. 011 100 100 ... ..... .....  @rdn_pg_rm
 USQADD          01000100 .. 011 101 100 ... ..... .....  @rdn_pg_rm
 SQSUB_zpzz      01000100 .. 011 110 100 ... ..... .....  @rdm_pg_rn # SQSUBR
 UQSUB_zpzz      01000100 .. 011 111 100 ... ..... .....  @rdm_pg_rn # UQSUBR
+
+#### SVE2 Widening Integer Arithmetic
+
+## SVE2 integer add/subtract long
+
+SADDLB          01000101 .. 0 ..... 00 0000 ..... .....  @rd_rn_rm
+SADDLT          01000101 .. 0 ..... 00 0001 ..... .....  @rd_rn_rm
+UADDLB          01000101 .. 0 ..... 00 0010 ..... .....  @rd_rn_rm
+UADDLT          01000101 .. 0 ..... 00 0011 ..... .....  @rd_rn_rm
+
+SSUBLB          01000101 .. 0 ..... 00 0100 ..... .....  @rd_rn_rm
+SSUBLT          01000101 .. 0 ..... 00 0101 ..... .....  @rd_rn_rm
+USUBLB          01000101 .. 0 ..... 00 0110 ..... .....  @rd_rn_rm
+USUBLT          01000101 .. 0 ..... 00 0111 ..... .....  @rd_rn_rm
+
+SABDLB          01000101 .. 0 ..... 00 1100 ..... .....  @rd_rn_rm
+SABDLT          01000101 .. 0 ..... 00 1101 ..... .....  @rd_rn_rm
+UABDLB          01000101 .. 0 ..... 00 1110 ..... .....  @rd_rn_rm
+UABDLT          01000101 .. 0 ..... 00 1111 ..... .....  @rd_rn_rm
diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
index ba80d24b21..8653e1ed05 100644
--- a/target/arm/sve_helper.c
+++ b/target/arm/sve_helper.c
@@ -1113,6 +1113,49 @@  DO_ZZW(sve_lsl_zzw_s, uint32_t, uint64_t, H1_4, DO_LSL)
 #undef DO_ZPZ
 #undef DO_ZPZ_D
 
+/*
+ * Three-operand expander, unpredicated, in which the two inputs are
+ * selected from the top or bottom half of the wide column.
+ */
+#define DO_ZZZ_TB(NAME, TYPEW, TYPEN, HW, HN, OP) \
+void HELPER(NAME)(void *vd, void *vn, void *vm, uint32_t desc)          \
+{                                                                       \
+    intptr_t i, opr_sz = simd_oprsz(desc);                              \
+    int sel1 = extract32(desc, SIMD_DATA_SHIFT, 1) * sizeof(TYPEN);     \
+    int sel2 = extract32(desc, SIMD_DATA_SHIFT + 1, 1) * sizeof(TYPEN); \
+    for (i = 0; i < opr_sz; i += sizeof(TYPEW)) {                       \
+        TYPEW nn = *(TYPEN *)(vn + HN(i + sel1));                       \
+        TYPEW mm = *(TYPEN *)(vm + HN(i + sel2));                       \
+        *(TYPEW *)(vd + HW(i)) = OP(nn, mm);                            \
+    }                                                                   \
+}
+
+DO_ZZZ_TB(sve2_saddl_h, int16_t, int8_t, H1_2, H1, DO_ADD)
+DO_ZZZ_TB(sve2_saddl_s, int32_t, int16_t, H1_4, H1_2, DO_ADD)
+DO_ZZZ_TB(sve2_saddl_d, int64_t, int32_t,     , H1_4, DO_ADD)
+
+DO_ZZZ_TB(sve2_ssubl_h, int16_t, int8_t, H1_2, H1, DO_SUB)
+DO_ZZZ_TB(sve2_ssubl_s, int32_t, int16_t, H1_4, H1_2, DO_SUB)
+DO_ZZZ_TB(sve2_ssubl_d, int64_t, int32_t,     , H1_4, DO_SUB)
+
+DO_ZZZ_TB(sve2_sabdl_h, int16_t, int8_t, H1_2, H1, DO_ABD)
+DO_ZZZ_TB(sve2_sabdl_s, int32_t, int16_t, H1_4, H1_2, DO_ABD)
+DO_ZZZ_TB(sve2_sabdl_d, int64_t, int32_t,     , H1_4, DO_ABD)
+
+DO_ZZZ_TB(sve2_uaddl_h, uint16_t, uint8_t, H1_2, H1, DO_ADD)
+DO_ZZZ_TB(sve2_uaddl_s, uint32_t, uint16_t, H1_4, H1_2, DO_ADD)
+DO_ZZZ_TB(sve2_uaddl_d, uint64_t, uint32_t,     , H1_4, DO_ADD)
+
+DO_ZZZ_TB(sve2_usubl_h, uint16_t, uint8_t, H1_2, H1, DO_SUB)
+DO_ZZZ_TB(sve2_usubl_s, uint32_t, uint16_t, H1_4, H1_2, DO_SUB)
+DO_ZZZ_TB(sve2_usubl_d, uint64_t, uint32_t,     , H1_4, DO_SUB)
+
+DO_ZZZ_TB(sve2_uabdl_h, uint16_t, uint8_t, H1_2, H1, DO_ABD)
+DO_ZZZ_TB(sve2_uabdl_s, uint32_t, uint16_t, H1_4, H1_2, DO_ABD)
+DO_ZZZ_TB(sve2_uabdl_d, uint64_t, uint32_t,     , H1_4, DO_ABD)
+
+#undef DO_ZZZ_TB
+
 /* Two-operand reduction expander, controlled by a predicate.
  * The difference between TYPERED and TYPERET has to do with
  * sign-extension.  E.g. for SMAX, TYPERED must be signed,
diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index b377abea15..13b3ef1a2c 100644
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -5536,3 +5536,49 @@  DO_SVE2_ZPZZ(SQSUB_zpzz, sqsub)
 DO_SVE2_ZPZZ(UQSUB_zpzz, uqsub)
 DO_SVE2_ZPZZ(SUQADD, suqadd)
 DO_SVE2_ZPZZ(USQADD, usqadd)
+
+/*
+ * SVE2 Widening Integer Arithmetic
+ */
+
+static bool do_sve2_zzw_ool(DisasContext *s, arg_rrr_esz *a,
+                            gen_helper_gvec_3 *fn, int data)
+{
+    if (fn == NULL || !dc_isar_feature(aa64_sve2, s)) {
+        return false;
+    }
+    if (sve_access_check(s)) {
+        unsigned vsz = vec_full_reg_size(s);
+        tcg_gen_gvec_3_ool(vec_full_reg_offset(s, a->rd),
+                           vec_full_reg_offset(s, a->rn),
+                           vec_full_reg_offset(s, a->rm),
+                           vsz, vsz, data, fn);
+    }
+    return true;
+}
+
+#define DO_SVE2_ZZZ_TB(NAME, name, SEL1, SEL2) \
+static bool trans_##NAME(DisasContext *s, arg_rrr_esz *a)               \
+{                                                                       \
+    static gen_helper_gvec_3 * const fns[4] = {                         \
+        NULL,                       gen_helper_sve2_##name##_h,         \
+        gen_helper_sve2_##name##_s, gen_helper_sve2_##name##_d,         \
+    };                                                                  \
+    return do_sve2_zzw_ool(s, a, fns[a->esz], (SEL2 << 1) | SEL1);      \
+}
+
+DO_SVE2_ZZZ_TB(SADDLB, saddl, false, false)
+DO_SVE2_ZZZ_TB(SSUBLB, ssubl, false, false)
+DO_SVE2_ZZZ_TB(SABDLB, sabdl, false, false)
+
+DO_SVE2_ZZZ_TB(UADDLB, uaddl, false, false)
+DO_SVE2_ZZZ_TB(USUBLB, usubl, false, false)
+DO_SVE2_ZZZ_TB(UABDLB, uabdl, false, false)
+
+DO_SVE2_ZZZ_TB(SADDLT, saddl, true, true)
+DO_SVE2_ZZZ_TB(SSUBLT, ssubl, true, true)
+DO_SVE2_ZZZ_TB(SABDLT, sabdl, true, true)
+
+DO_SVE2_ZZZ_TB(UADDLT, uaddl, true, true)
+DO_SVE2_ZZZ_TB(USUBLT, usubl, true, true)
+DO_SVE2_ZZZ_TB(UABDLT, uabdl, true, true)