[Qemu-devel] [PULL 02/48] target/arm: Use tcg_gen_gvec_bitsel

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

From: Richard Henderson <richard.henderson@linaro.org>

This replaces 3 target-specific implementations for BIT, BIF, and BSL.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20190518191934.21887-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/translate-a64.h |  2 +
 target/arm/translate.h     |  3 --
 target/arm/translate-a64.c | 15 ++++++--
 target/arm/translate.c     | 78 +++-----------------------------------
 4 files changed, 20 insertions(+), 78 deletions(-)

diff --git a/target/arm/translate-a64.h b/target/arm/translate-a64.h
index 63d958cf504..9569bc5963d 100644
--- a/target/arm/translate-a64.h
+++ b/target/arm/translate-a64.h
@@ -122,5 +122,7 @@ typedef void GVecGen2iFn(unsigned, uint32_t, uint32_t, int64_t,
                          uint32_t, uint32_t);
 typedef void GVecGen3Fn(unsigned, uint32_t, uint32_t,
                         uint32_t, uint32_t, uint32_t);
+typedef void GVecGen4Fn(unsigned, uint32_t, uint32_t, uint32_t,
+                        uint32_t, uint32_t, uint32_t);
 
 #endif /* TARGET_ARM_TRANSLATE_A64_H */
diff --git a/target/arm/translate.h b/target/arm/translate.h
index f357b767cb9..01ae454dcf1 100644
--- a/target/arm/translate.h
+++ b/target/arm/translate.h
@@ -238,9 +238,6 @@ static inline void gen_ss_advance(DisasContext *s)
 }
 
 /* Vector operations shared between ARM and AArch64.  */
-extern const GVecGen3 bsl_op;
-extern const GVecGen3 bit_op;
-extern const GVecGen3 bif_op;
 extern const GVecGen3 mla_op[4];
 extern const GVecGen3 mls_op[4];
 extern const GVecGen3 cmtst_op[4];
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index f53cd288158..e9954eb78f7 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -704,6 +704,15 @@ static void gen_gvec_fn3(DisasContext *s, bool is_q, int rd, int rn, int rm,
             vec_full_reg_offset(s, rm), is_q ? 16 : 8, vec_full_reg_size(s));
 }
 
+/* Expand a 4-operand AdvSIMD vector operation using an expander function.  */
+static void gen_gvec_fn4(DisasContext *s, bool is_q, int rd, int rn, int rm,
+                         int rx, GVecGen4Fn *gvec_fn, int vece)
+{
+    gvec_fn(vece, vec_full_reg_offset(s, rd), vec_full_reg_offset(s, rn),
+            vec_full_reg_offset(s, rm), vec_full_reg_offset(s, rx),
+            is_q ? 16 : 8, vec_full_reg_size(s));
+}
+
 /* Expand a 2-operand + immediate AdvSIMD vector operation using
  * an op descriptor.
  */
@@ -10918,13 +10927,13 @@ static void disas_simd_3same_logic(DisasContext *s, uint32_t insn)
         return;
 
     case 5: /* BSL bitwise select */
-        gen_gvec_op3(s, is_q, rd, rn, rm, &bsl_op);
+        gen_gvec_fn4(s, is_q, rd, rd, rn, rm, tcg_gen_gvec_bitsel, 0);
         return;
     case 6: /* BIT, bitwise insert if true */
-        gen_gvec_op3(s, is_q, rd, rn, rm, &bit_op);
+        gen_gvec_fn4(s, is_q, rd, rm, rn, rd, tcg_gen_gvec_bitsel, 0);
         return;
     case 7: /* BIF, bitwise insert if false */
-        gen_gvec_op3(s, is_q, rd, rn, rm, &bif_op);
+        gen_gvec_fn4(s, is_q, rd, rm, rd, rn, tcg_gen_gvec_bitsel, 0);
         return;
 
     default:
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 096e338bf06..ab3026664af 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -5755,72 +5755,6 @@ static int do_v81_helper(DisasContext *s, gen_helper_gvec_3_ptr *fn,
     return 1;
 }
 
-/*
- * Expanders for VBitOps_VBIF, VBIT, VBSL.
- */
-static void gen_bsl_i64(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
-{
-    tcg_gen_xor_i64(rn, rn, rm);
-    tcg_gen_and_i64(rn, rn, rd);
-    tcg_gen_xor_i64(rd, rm, rn);
-}
-
-static void gen_bit_i64(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
-{
-    tcg_gen_xor_i64(rn, rn, rd);
-    tcg_gen_and_i64(rn, rn, rm);
-    tcg_gen_xor_i64(rd, rd, rn);
-}
-
-static void gen_bif_i64(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
-{
-    tcg_gen_xor_i64(rn, rn, rd);
-    tcg_gen_andc_i64(rn, rn, rm);
-    tcg_gen_xor_i64(rd, rd, rn);
-}
-
-static void gen_bsl_vec(unsigned vece, TCGv_vec rd, TCGv_vec rn, TCGv_vec rm)
-{
-    tcg_gen_xor_vec(vece, rn, rn, rm);
-    tcg_gen_and_vec(vece, rn, rn, rd);
-    tcg_gen_xor_vec(vece, rd, rm, rn);
-}
-
-static void gen_bit_vec(unsigned vece, TCGv_vec rd, TCGv_vec rn, TCGv_vec rm)
-{
-    tcg_gen_xor_vec(vece, rn, rn, rd);
-    tcg_gen_and_vec(vece, rn, rn, rm);
-    tcg_gen_xor_vec(vece, rd, rd, rn);
-}
-
-static void gen_bif_vec(unsigned vece, TCGv_vec rd, TCGv_vec rn, TCGv_vec rm)
-{
-    tcg_gen_xor_vec(vece, rn, rn, rd);
-    tcg_gen_andc_vec(vece, rn, rn, rm);
-    tcg_gen_xor_vec(vece, rd, rd, rn);
-}
-
-const GVecGen3 bsl_op = {
-    .fni8 = gen_bsl_i64,
-    .fniv = gen_bsl_vec,
-    .prefer_i64 = TCG_TARGET_REG_BITS == 64,
-    .load_dest = true
-};
-
-const GVecGen3 bit_op = {
-    .fni8 = gen_bit_i64,
-    .fniv = gen_bit_vec,
-    .prefer_i64 = TCG_TARGET_REG_BITS == 64,
-    .load_dest = true
-};
-
-const GVecGen3 bif_op = {
-    .fni8 = gen_bif_i64,
-    .fniv = gen_bif_vec,
-    .prefer_i64 = TCG_TARGET_REG_BITS == 64,
-    .load_dest = true
-};
-
 static void gen_ssra8_i64(TCGv_i64 d, TCGv_i64 a, int64_t shift)
 {
     tcg_gen_vec_sar8i_i64(a, a, shift);
@@ -6846,16 +6780,16 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
                                  vec_size, vec_size);
                 break;
             case 5: /* VBSL */
-                tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs,
-                               vec_size, vec_size, &bsl_op);
+                tcg_gen_gvec_bitsel(MO_8, rd_ofs, rd_ofs, rn_ofs, rm_ofs,
+                                    vec_size, vec_size);
                 break;
             case 6: /* VBIT */
-                tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs,
-                               vec_size, vec_size, &bit_op);
+                tcg_gen_gvec_bitsel(MO_8, rd_ofs, rm_ofs, rn_ofs, rd_ofs,
+                                    vec_size, vec_size);
                 break;
             case 7: /* VBIF */
-                tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs,
-                               vec_size, vec_size, &bif_op);
+                tcg_gen_gvec_bitsel(MO_8, rd_ofs, rm_ofs, rd_ofs, rn_ofs,
+                                    vec_size, vec_size);
                 break;
             }
             return 0;
-- 
2.20.1