[PULL 42/45] target/arm: Convert Neon 3-reg-same compare insns to decodetree

[Peter Maydell <peter.maydell@linaro.org>]

Convert the Neon integer 3-reg-same compare insns VCGE, VCGT,
VCEQ, VACGE and VACGT to decodetree.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200512163904.10918-15-peter.maydell@linaro.org
---
 target/arm/neon-dp.decode       |  5 +++++
 target/arm/translate-neon.inc.c |  6 +++++
 target/arm/translate.c          | 39 ++-------------------------------
 3 files changed, 13 insertions(+), 37 deletions(-)

diff --git a/target/arm/neon-dp.decode b/target/arm/neon-dp.decode
index 4c2f8c770d1..29cf54c217c 100644
--- a/target/arm/neon-dp.decode
+++ b/target/arm/neon-dp.decode
@@ -183,5 +183,10 @@ VABD_fp_3s       1111 001 1 0 . 1 . .... .... 1101 ... 0 .... @3same_fp
 VMLA_fp_3s       1111 001 0 0 . 0 . .... .... 1101 ... 1 .... @3same_fp
 VMLS_fp_3s       1111 001 0 0 . 1 . .... .... 1101 ... 1 .... @3same_fp
 VMUL_fp_3s       1111 001 1 0 . 0 . .... .... 1101 ... 1 .... @3same_fp
+VCEQ_fp_3s       1111 001 0 0 . 0 . .... .... 1110 ... 0 .... @3same_fp
+VCGE_fp_3s       1111 001 1 0 . 0 . .... .... 1110 ... 0 .... @3same_fp
+VACGE_fp_3s      1111 001 1 0 . 0 . .... .... 1110 ... 1 .... @3same_fp
+VCGT_fp_3s       1111 001 1 0 . 1 . .... .... 1110 ... 0 .... @3same_fp
+VACGT_fp_3s      1111 001 1 0 . 1 . .... .... 1110 ... 1 .... @3same_fp
 VPMAX_fp_3s      1111 001 1 0 . 0 . .... .... 1111 ... 0 .... @3same_fp_q0
 VPMIN_fp_3s      1111 001 1 0 . 1 . .... .... 1111 ... 0 .... @3same_fp_q0
diff --git a/target/arm/translate-neon.inc.c b/target/arm/translate-neon.inc.c
index 18896598bb4..eeea71e3bec 100644
--- a/target/arm/translate-neon.inc.c
+++ b/target/arm/translate-neon.inc.c
@@ -1114,6 +1114,12 @@ DO_3S_FP_GVEC(VMUL, gen_helper_gvec_fmul_s)
         return do_3same_fp(s, a, FUNC, READS_VD);                   \
     }
 
+DO_3S_FP(VCEQ, gen_helper_neon_ceq_f32, false)
+DO_3S_FP(VCGE, gen_helper_neon_cge_f32, false)
+DO_3S_FP(VCGT, gen_helper_neon_cgt_f32, false)
+DO_3S_FP(VACGE, gen_helper_neon_acge_f32, false)
+DO_3S_FP(VACGT, gen_helper_neon_acgt_f32, false)
+
 static void gen_VMLA_fp_3s(TCGv_i32 vd, TCGv_i32 vn, TCGv_i32 vm,
                             TCGv_ptr fpstatus)
 {
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 06b6925d31e..b9fcbbcbcb5 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -5434,6 +5434,8 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
         case NEON_3R_VQDMULH_VQRDMULH:
         case NEON_3R_FLOAT_ARITH:
         case NEON_3R_FLOAT_MULTIPLY:
+        case NEON_3R_FLOAT_CMP:
+        case NEON_3R_FLOAT_ACMP:
             /* Already handled by decodetree */
             return 1;
         }
@@ -5448,17 +5450,6 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
                 return 1; /* VPMIN/VPMAX handled by decodetree */
             }
             break;
-        case NEON_3R_FLOAT_CMP:
-            if (!u && size) {
-                /* no encoding for U=0 C=1x */
-                return 1;
-            }
-            break;
-        case NEON_3R_FLOAT_ACMP:
-            if (!u) {
-                return 1;
-            }
-            break;
         case NEON_3R_FLOAT_MISC:
             /* VMAXNM/VMINNM in ARMv8 */
             if (u && !arm_dc_feature(s, ARM_FEATURE_V8)) {
@@ -5480,32 +5471,6 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
         tmp = neon_load_reg(rn, pass);
         tmp2 = neon_load_reg(rm, pass);
         switch (op) {
-        case NEON_3R_FLOAT_CMP:
-        {
-            TCGv_ptr fpstatus = get_fpstatus_ptr(1);
-            if (!u) {
-                gen_helper_neon_ceq_f32(tmp, tmp, tmp2, fpstatus);
-            } else {
-                if (size == 0) {
-                    gen_helper_neon_cge_f32(tmp, tmp, tmp2, fpstatus);
-                } else {
-                    gen_helper_neon_cgt_f32(tmp, tmp, tmp2, fpstatus);
-                }
-            }
-            tcg_temp_free_ptr(fpstatus);
-            break;
-        }
-        case NEON_3R_FLOAT_ACMP:
-        {
-            TCGv_ptr fpstatus = get_fpstatus_ptr(1);
-            if (size == 0) {
-                gen_helper_neon_acge_f32(tmp, tmp, tmp2, fpstatus);
-            } else {
-                gen_helper_neon_acgt_f32(tmp, tmp, tmp2, fpstatus);
-            }
-            tcg_temp_free_ptr(fpstatus);
-            break;
-        }
         case NEON_3R_FLOAT_MINMAX:
         {
             TCGv_ptr fpstatus = get_fpstatus_ptr(1);
-- 
2.20.1