[Qemu-devel] [PATCH for-4.1 v2 10/13] tcg/ppc: Support vector multiply

[Richard Henderson]

For Altivec, this is always an expansion.

Signed-off-by: Richard Henderson <address@hidden>
---
 tcg/ppc/tcg-target.opc.h |   8 +++
 tcg/ppc/tcg-target.inc.c | 112 ++++++++++++++++++++++++++++++++++++++-
 2 files changed, 119 insertions(+), 1 deletion(-)

diff --git a/tcg/ppc/tcg-target.opc.h b/tcg/ppc/tcg-target.opc.h
index 4816a6c3d4..5c6a5ad52c 100644
--- a/tcg/ppc/tcg-target.opc.h
+++ b/tcg/ppc/tcg-target.opc.h
@@ -1,3 +1,11 @@
 /* Target-specific opcodes for host vector expansion.  These will be
    emitted by tcg_expand_vec_op.  For those familiar with GCC internals,
    consider these to be UNSPEC with names.  */
+
+DEF(ppc_mrgh_vec, 1, 2, 0, IMPLVEC)
+DEF(ppc_mrgl_vec, 1, 2, 0, IMPLVEC)
+DEF(ppc_msum_vec, 1, 3, 0, IMPLVEC)
+DEF(ppc_muleu_vec, 1, 2, 0, IMPLVEC)
+DEF(ppc_mulou_vec, 1, 2, 0, IMPLVEC)
+DEF(ppc_pkum_vec, 1, 2, 0, IMPLVEC)
+DEF(ppc_rotl_vec, 1, 2, 0, IMPLVEC)
diff --git a/tcg/ppc/tcg-target.inc.c b/tcg/ppc/tcg-target.inc.c
index d91bc9a229..4c5943be03 100644
--- a/tcg/ppc/tcg-target.inc.c
+++ b/tcg/ppc/tcg-target.inc.c
@@ -526,6 +526,25 @@ static int tcg_target_const_match(tcg_target_long val, 
TCGType type,
 #define VSRAB      VX4(772)
 #define VSRAH      VX4(836)
 #define VSRAW      VX4(900)
+#define VRLB       VX4(4)
+#define VRLH       VX4(68)
+#define VRLW       VX4(132)
+
+#define VMULEUB    VX4(520)
+#define VMULEUH    VX4(584)
+#define VMULOUB    VX4(8)
+#define VMULOUH    VX4(72)
+#define VMSUMUHM   VX4(38)
+
+#define VMRGHB     VX4(12)
+#define VMRGHH     VX4(76)
+#define VMRGHW     VX4(140)
+#define VMRGLB     VX4(268)
+#define VMRGLH     VX4(332)
+#define VMRGLW     VX4(396)
+
+#define VPKUHUM    VX4(14)
+#define VPKUWUM    VX4(78)
 
 #define VAND       VX4(1028)
 #define VANDC      VX4(1092)
@@ -2864,6 +2883,7 @@ int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, 
unsigned vece)
     case INDEX_op_sarv_vec:
         return vece <= MO_32;
     case INDEX_op_cmp_vec:
+    case INDEX_op_mul_vec:
     case INDEX_op_shli_vec:
     case INDEX_op_shri_vec:
     case INDEX_op_sari_vec:
@@ -2942,7 +2962,13 @@ static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
         smax_op[4] = { VMAXSB, VMAXSH, VMAXSW, 0 },
         shlv_op[4] = { VSLB, VSLH, VSLW, 0 },
         shrv_op[4] = { VSRB, VSRH, VSRW, 0 },
-        sarv_op[4] = { VSRAB, VSRAH, VSRAW, 0 };
+        sarv_op[4] = { VSRAB, VSRAH, VSRAW, 0 },
+        mrgh_op[4] = { VMRGHB, VMRGHH, VMRGHW, 0 },
+        mrgl_op[4] = { VMRGLB, VMRGLH, VMRGLW, 0 },
+        muleu_op[4] = { VMULEUB, VMULEUH, 0, 0 },
+        mulou_op[4] = { VMULOUB, VMULOUH, 0, 0 },
+        pkum_op[4] = { VPKUHUM, VPKUWUM, 0, 0 },
+        rotl_op[4] = { VRLB, VRLH, VRLW, 0 };
 
     TCGType type = vecl + TCG_TYPE_V64;
     TCGArg a0 = args[0], a1 = args[1], a2 = args[2];
@@ -3060,6 +3086,29 @@ static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
         }
         return;
 
+    case INDEX_op_ppc_mrgh_vec:
+        insn = mrgh_op[vece];
+        break;
+    case INDEX_op_ppc_mrgl_vec:
+        insn = mrgl_op[vece];
+        break;
+    case INDEX_op_ppc_muleu_vec:
+        insn = muleu_op[vece];
+        break;
+    case INDEX_op_ppc_mulou_vec:
+        insn = mulou_op[vece];
+        break;
+    case INDEX_op_ppc_pkum_vec:
+        insn = pkum_op[vece];
+        break;
+    case INDEX_op_ppc_rotl_vec:
+        insn = rotl_op[vece];
+        break;
+    case INDEX_op_ppc_msum_vec:
+        tcg_debug_assert(vece == MO_16);
+        tcg_out32(s, VMSUMUHM | VRT(a0) | VRA(a1) | VRB(a2) | VRC(args[3]));
+        return;
+
     default:
         g_assert_not_reached();
     }
@@ -3126,6 +3175,53 @@ static void expand_vec_cmp(TCGType type, unsigned vece, 
TCGv_vec v0,
     }
 }
 
+static void expand_vec_mul(TCGType type, unsigned vece, TCGv_vec v0,
+                           TCGv_vec v1, TCGv_vec v2)
+{
+    TCGv_vec t1 = tcg_temp_new_vec(type);
+    TCGv_vec t2 = tcg_temp_new_vec(type);
+    TCGv_vec t3, t4;
+
+    switch (vece) {
+    case MO_8:
+    case MO_16:
+        vec_gen_3(INDEX_op_ppc_muleu_vec, type, vece, tcgv_vec_arg(t1),
+                  tcgv_vec_arg(v1), tcgv_vec_arg(v2));
+        vec_gen_3(INDEX_op_ppc_mulou_vec, type, vece, tcgv_vec_arg(t2),
+                  tcgv_vec_arg(v1), tcgv_vec_arg(v2));
+        vec_gen_3(INDEX_op_ppc_mrgh_vec, type, vece + 1, tcgv_vec_arg(v0),
+                  tcgv_vec_arg(t1), tcgv_vec_arg(t2));
+        vec_gen_3(INDEX_op_ppc_mrgl_vec, type, vece + 1, tcgv_vec_arg(t1),
+                  tcgv_vec_arg(t1), tcgv_vec_arg(t2));
+        vec_gen_3(INDEX_op_ppc_pkum_vec, type, vece, tcgv_vec_arg(v0),
+                  tcgv_vec_arg(v0), tcgv_vec_arg(t1));
+       break;
+
+    case MO_32:
+        t3 = tcg_temp_new_vec(type);
+        t4 = tcg_temp_new_vec(type);
+        tcg_gen_dupi_vec(MO_8, t4, -16);
+        vec_gen_3(INDEX_op_ppc_rotl_vec, type, MO_32, tcgv_vec_arg(t1),
+                  tcgv_vec_arg(v2), tcgv_vec_arg(t4));
+        vec_gen_3(INDEX_op_ppc_mulou_vec, type, MO_16, tcgv_vec_arg(t2),
+                  tcgv_vec_arg(v1), tcgv_vec_arg(v2));
+        tcg_gen_dupi_vec(MO_8, t3, 0);
+        vec_gen_4(INDEX_op_ppc_msum_vec, type, MO_16, tcgv_vec_arg(t3),
+                  tcgv_vec_arg(v1), tcgv_vec_arg(t1), tcgv_vec_arg(t3));
+        vec_gen_3(INDEX_op_shlv_vec, type, MO_32, tcgv_vec_arg(t3),
+                  tcgv_vec_arg(t3), tcgv_vec_arg(t4));
+        tcg_gen_add_vec(MO_32, v0, t2, t3);
+        tcg_temp_free_vec(t3);
+        tcg_temp_free_vec(t4);
+        break;
+
+    default:
+        g_assert_not_reached();
+    }
+    tcg_temp_free_vec(t1);
+    tcg_temp_free_vec(t2);
+}
+
 void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece,
                        TCGArg a0, ...)
 {
@@ -3152,6 +3248,10 @@ void tcg_expand_vec_op(TCGOpcode opc, TCGType type, 
unsigned vece,
         v2 = temp_tcgv_vec(arg_temp(a2));
         expand_vec_cmp(type, vece, v0, v1, v2, va_arg(va, TCGArg));
         break;
+    case INDEX_op_mul_vec:
+        v2 = temp_tcgv_vec(arg_temp(a2));
+        expand_vec_mul(type, vece, v0, v1, v2);
+        break;
     default:
         g_assert_not_reached();
     }
@@ -3198,6 +3298,8 @@ static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode 
op)
     static const TCGTargetOpDef v_r = { .args_ct_str = { "v", "r" } };
     static const TCGTargetOpDef v_v = { .args_ct_str = { "v", "v" } };
     static const TCGTargetOpDef v_v_v = { .args_ct_str = { "v", "v", "v" } };
+    static const TCGTargetOpDef v_v_v_v
+        = { .args_ct_str = { "v", "v", "v", "v" } };
 
     switch (op) {
     case INDEX_op_goto_ptr:
@@ -3353,6 +3455,12 @@ static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode 
op)
     case INDEX_op_shlv_vec:
     case INDEX_op_shrv_vec:
     case INDEX_op_sarv_vec:
+    case INDEX_op_ppc_mrgh_vec:
+    case INDEX_op_ppc_mrgl_vec:
+    case INDEX_op_ppc_muleu_vec:
+    case INDEX_op_ppc_mulou_vec:
+    case INDEX_op_ppc_pkum_vec:
+    case INDEX_op_ppc_rotl_vec:
         return &v_v_v;
     case INDEX_op_not_vec:
     case INDEX_op_dup_vec:
@@ -3361,6 +3469,8 @@ static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode 
op)
     case INDEX_op_st_vec:
     case INDEX_op_dupm_vec:
         return &v_r;
+    case INDEX_op_ppc_msum_vec:
+        return &v_v_v_v;
 
     default:
         return NULL;
-- 
2.17.2