[PATCH v2 08/15] tcg/arm: Implement TCG_TARGET_HAS_shi_vec

[Richard Henderson]

This consists of the three immediate shifts: shli, shri, sari.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/arm/tcg-target.h     |  2 +-
 tcg/arm/tcg-target.c.inc | 27 +++++++++++++++++++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/tcg/arm/tcg-target.h b/tcg/arm/tcg-target.h
index 6ac9fc6b9b..cfbadad72c 100644
--- a/tcg/arm/tcg-target.h
+++ b/tcg/arm/tcg-target.h
@@ -163,7 +163,7 @@ extern bool use_neon_instructions;
 #define TCG_TARGET_HAS_roti_vec         0
 #define TCG_TARGET_HAS_rots_vec         0
 #define TCG_TARGET_HAS_rotv_vec         0
-#define TCG_TARGET_HAS_shi_vec          0
+#define TCG_TARGET_HAS_shi_vec          1
 #define TCG_TARGET_HAS_shs_vec          0
 #define TCG_TARGET_HAS_shv_vec          0
 #define TCG_TARGET_HAS_mul_vec          0
diff --git a/tcg/arm/tcg-target.c.inc b/tcg/arm/tcg-target.c.inc
index 1b31f11f6c..22cf44263c 100644
--- a/tcg/arm/tcg-target.c.inc
+++ b/tcg/arm/tcg-target.c.inc
@@ -203,6 +203,10 @@ typedef enum {
     INSN_VCGE_U    = 0xf3000310,
     INSN_VCGT_U    = 0xf3000300,
 
+    INSN_VSHLI     = 0xf2800510,  /* VSHL (immediate) */
+    INSN_VSARI     = 0xf2800010,  /* VSHR.S */
+    INSN_VSHRI     = 0xf3800010,  /* VSHR.U */
+
     INSN_VTST      = 0xf2000810,
 
     INSN_VDUP_G    = 0xee800b10,  /* VDUP (ARM core register) */
@@ -1325,6 +1329,14 @@ static void tcg_out_vmovi(TCGContext *s, TCGReg rd,
               | (extract32(imm8, 7, 1) << 24));
 }
 
+static void tcg_out_vshifti(TCGContext *s, ARMInsn insn, int q,
+                            TCGReg rd, TCGReg rm, int l_imm6)
+{
+    tcg_out32(s, insn | (q << 6) | encode_vd(rd) | encode_vm(rm) |
+              (extract32(l_imm6, 6, 1) << 7) |
+              (extract32(l_imm6, 0, 6) << 16));
+}
+
 static void tcg_out_vldst(TCGContext *s, ARMInsn insn,
                           TCGReg rd, TCGReg rn, int offset)
 {
@@ -2380,6 +2392,9 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode 
op)
     case INDEX_op_abs_vec:
     case INDEX_op_neg_vec:
     case INDEX_op_not_vec:
+    case INDEX_op_shli_vec:
+    case INDEX_op_shri_vec:
+    case INDEX_op_sari_vec:
         return C_O1_I1(w, w);
     case INDEX_op_dup2_vec:
     case INDEX_op_add_vec:
@@ -2753,6 +2768,15 @@ static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_xor_vec:
         tcg_out_vreg3(s, INSN_VEOR, q, 0, a0, a1, a2);
         return;
+    case INDEX_op_shli_vec:
+        tcg_out_vshifti(s, INSN_VSHLI, q, a0, a1, a2 + (8 << vece));
+        return;
+    case INDEX_op_shri_vec:
+        tcg_out_vshifti(s, INSN_VSHRI, q, a0, a1, (16 << vece) - a2);
+        return;
+    case INDEX_op_sari_vec:
+        tcg_out_vshifti(s, INSN_VSARI, q, a0, a1, (16 << vece) - a2);
+        return;
 
     case INDEX_op_andc_vec:
         if (!const_args[2]) {
@@ -2848,6 +2872,9 @@ int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, 
unsigned vece)
     case INDEX_op_orc_vec:
     case INDEX_op_xor_vec:
     case INDEX_op_not_vec:
+    case INDEX_op_shli_vec:
+    case INDEX_op_shri_vec:
+    case INDEX_op_sari_vec:
         return 1;
     case INDEX_op_abs_vec:
     case INDEX_op_cmp_vec:
-- 
2.25.1