commit ea580fa312674c1ba82a8b137caf42b0609ce3e3
author Richard Henderson <richard.henderson@linaro.org> Wed Oct 24 07:50:20 2018 +0100
committer Peter Maydell <peter.maydell@linaro.org> Wed Oct 24 07:51:37 2018 +0100
tree cbd3e2749f1499eae4d5ce85c2db58b86f98c4e8
parent 4a7832b095b9ce97a815749a13516f5cfb3c5dd4

target/arm: Use gvec for NEON_3R_VTST_VCEQ, NEON_3R_VCGT, NEON_3R_VCGE

Move cmtst_op expanders from translate-a64.c.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181011205206.3552-17-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/translate.c

diff --git a/target/arm/translate.c b/target/arm/translate.c
index d4eb66f..e6b0691 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -6143,6 +6143,44 @@
       .vece = MO_64 },
 };
 
+/* CMTST : test is "if (X & Y != 0)". */
+static void gen_cmtst_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b)
+{
+    tcg_gen_and_i32(d, a, b);
+    tcg_gen_setcondi_i32(TCG_COND_NE, d, d, 0);
+    tcg_gen_neg_i32(d, d);
+}
+
+void gen_cmtst_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b)
+{
+    tcg_gen_and_i64(d, a, b);
+    tcg_gen_setcondi_i64(TCG_COND_NE, d, d, 0);
+    tcg_gen_neg_i64(d, d);
+}
+
+static void gen_cmtst_vec(unsigned vece, TCGv_vec d, TCGv_vec a, TCGv_vec b)
+{
+    tcg_gen_and_vec(vece, d, a, b);
+    tcg_gen_dupi_vec(vece, a, 0);
+    tcg_gen_cmp_vec(TCG_COND_NE, vece, d, d, a);
+}
+
+const GVecGen3 cmtst_op[4] = {
+    { .fni4 = gen_helper_neon_tst_u8,
+      .fniv = gen_cmtst_vec,
+      .vece = MO_8 },
+    { .fni4 = gen_helper_neon_tst_u16,
+      .fniv = gen_cmtst_vec,
+      .vece = MO_16 },
+    { .fni4 = gen_cmtst_i32,
+      .fniv = gen_cmtst_vec,
+      .vece = MO_32 },
+    { .fni8 = gen_cmtst_i64,
+      .fniv = gen_cmtst_vec,
+      .prefer_i64 = TCG_TARGET_REG_BITS == 64,
+      .vece = MO_64 },
+};
+
 /* Translate a NEON data processing instruction.  Return nonzero if the
    instruction is invalid.
    We process data in a mixture of 32-bit and 64-bit chunks.
@@ -6349,6 +6387,26 @@
             tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs, vec_size, vec_size,
                            u ? &mls_op[size] : &mla_op[size]);
             return 0;
+
+        case NEON_3R_VTST_VCEQ:
+            if (u) { /* VCEQ */
+                tcg_gen_gvec_cmp(TCG_COND_EQ, size, rd_ofs, rn_ofs, rm_ofs,
+                                 vec_size, vec_size);
+            } else { /* VTST */
+                tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs,
+                               vec_size, vec_size, &cmtst_op[size]);
+            }
+            return 0;
+
+        case NEON_3R_VCGT:
+            tcg_gen_gvec_cmp(u ? TCG_COND_GTU : TCG_COND_GT, size,
+                             rd_ofs, rn_ofs, rm_ofs, vec_size, vec_size);
+            return 0;
+
+        case NEON_3R_VCGE:
+            tcg_gen_gvec_cmp(u ? TCG_COND_GEU : TCG_COND_GE, size,
+                             rd_ofs, rn_ofs, rm_ofs, vec_size, vec_size);
+            return 0;
         }
 
         if (size == 3) {
@@ -6502,12 +6560,6 @@
         case NEON_3R_VQSUB:
             GEN_NEON_INTEGER_OP_ENV(qsub);
             break;
-        case NEON_3R_VCGT:
-            GEN_NEON_INTEGER_OP(cgt);
-            break;
-        case NEON_3R_VCGE:
-            GEN_NEON_INTEGER_OP(cge);
-            break;
         case NEON_3R_VSHL:
             GEN_NEON_INTEGER_OP(shl);
             break;
@@ -6535,23 +6587,6 @@
             tmp2 = neon_load_reg(rd, pass);
             gen_neon_add(size, tmp, tmp2);
             break;
-        case NEON_3R_VTST_VCEQ:
-            if (!u) { /* VTST */
-                switch (size) {
-                case 0: gen_helper_neon_tst_u8(tmp, tmp, tmp2); break;
-                case 1: gen_helper_neon_tst_u16(tmp, tmp, tmp2); break;
-                case 2: gen_helper_neon_tst_u32(tmp, tmp, tmp2); break;
-                default: abort();
-                }
-            } else { /* VCEQ */
-                switch (size) {
-                case 0: gen_helper_neon_ceq_u8(tmp, tmp, tmp2); break;
-                case 1: gen_helper_neon_ceq_u16(tmp, tmp, tmp2); break;
-                case 2: gen_helper_neon_ceq_u32(tmp, tmp, tmp2); break;
-                default: abort();
-                }
-            }
-            break;
         case NEON_3R_VMUL:
             /* VMUL.P8; other cases already eliminated.  */
             gen_helper_neon_mul_p8(tmp, tmp, tmp2);