On 4/15/25 12:23, Richard Henderson wrote:
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
  include/tcg/tcg-opc.h    |  3 +--
  tcg/optimize.c           |  9 +++------
  tcg/tcg-op.c             | 21 ++++++++++-----------
  tcg/tcg.c                |  6 ++----
  tcg/tci.c                |  6 ++----
  docs/devel/tcg-ops.rst   |  6 +++---
  tcg/tci/tcg-target.c.inc |  2 +-
  7 files changed, 22 insertions(+), 31 deletions(-)

diff --git a/include/tcg/tcg-opc.h b/include/tcg/tcg-opc.h
index 4dfd8708a5..f4ccde074b 100644
--- a/include/tcg/tcg-opc.h
+++ b/include/tcg/tcg-opc.h
@@ -43,6 +43,7 @@ DEF(add, 1, 2, 0, TCG_OPF_INT)
  DEF(and, 1, 2, 0, TCG_OPF_INT)
  DEF(andc, 1, 2, 0, TCG_OPF_INT)
  DEF(clz, 1, 2, 0, TCG_OPF_INT)
+DEF(ctpop, 1, 1, 0, TCG_OPF_INT)
  DEF(ctz, 1, 2, 0, TCG_OPF_INT)
  DEF(divs, 1, 2, 0, TCG_OPF_INT)
  DEF(divs2, 2, 3, 0, TCG_OPF_INT)
@@ -97,7 +98,6 @@ DEF(setcond2_i32, 1, 4, 1, 0)
DEF(bswap16_i32, 1, 1, 1, 0)
  DEF(bswap32_i32, 1, 1, 1, 0)
-DEF(ctpop_i32, 1, 1, 0, 0)
DEF(setcond_i64, 1, 2, 1, 0)
  DEF(negsetcond_i64, 1, 2, 1, 0)
@@ -130,7 +130,6 @@ DEF(brcond_i64, 0, 2, 2, TCG_OPF_BB_END | 
TCG_OPF_COND_BRANCH)
  DEF(bswap16_i64, 1, 1, 1, 0)
  DEF(bswap32_i64, 1, 1, 1, 0)
  DEF(bswap64_i64, 1, 1, 1, 0)
-DEF(ctpop_i64, 1, 1, 0, 0)
DEF(add2_i64, 2, 4, 0, 0)
  DEF(sub2_i64, 2, 4, 0, 0)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index 2dbc0e45b4..78979623c5 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -503,11 +503,8 @@ static uint64_t do_constant_folding_2(TCGOpcode op, 
TCGType type,
          }
          return x ? ctz64(x) : y;
- case INDEX_op_ctpop_i32:
-        return ctpop32(x);
-
-    case INDEX_op_ctpop_i64:
-        return ctpop64(x);
+    case INDEX_op_ctpop:
+        return type == TCG_TYPE_I32 ? ctpop32(x) : ctpop64(x);
CASE_OP_32_64(bswap16):
          x = bswap16(x);
@@ -2890,7 +2887,7 @@ void tcg_optimize(TCGContext *s)
          case INDEX_op_ctz:
              done = fold_count_zeros(&ctx, op);
              break;
-        CASE_OP_32_64(ctpop):
+        case INDEX_op_ctpop:
              done = fold_ctpop(&ctx, op);
              break;
          CASE_OP_32_64(deposit):
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index db0e79059b..0eeec47b83 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -765,8 +765,7 @@ void tcg_gen_ctz_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 
arg2)
          tcg_temp_free_i64(t2);
          return;
      }
-    if (tcg_op_supported(INDEX_op_ctpop_i32, TCG_TYPE_I32, 0) ||
-        tcg_op_supported(INDEX_op_ctpop_i64, TCG_TYPE_I64, 0)) {
+    if (tcg_op_supported(INDEX_op_ctpop, TCG_TYPE_REG, 0)) {
          t = tcg_temp_ebb_new_i32();
          tcg_gen_subi_i32(t, arg1, 1);
          tcg_gen_andc_i32(t, t, arg1);
@@ -791,7 +790,7 @@ void tcg_gen_ctzi_i32(TCGv_i32 ret, TCGv_i32 arg1, uint32_t 
arg2)
  {
      if (arg2 == 32
          && !tcg_op_supported(INDEX_op_ctz, TCG_TYPE_I32, 0)
-        && tcg_op_supported(INDEX_op_ctpop_i32, TCG_TYPE_I32, 0)) {
+        && tcg_op_supported(INDEX_op_ctpop, TCG_TYPE_REG, 0)) {
          /* This equivalence has the advantage of not requiring a fixup.  */
          TCGv_i32 t = tcg_temp_ebb_new_i32();
          tcg_gen_subi_i32(t, arg1, 1);
@@ -819,9 +818,9 @@ void tcg_gen_clrsb_i32(TCGv_i32 ret, TCGv_i32 arg)
void tcg_gen_ctpop_i32(TCGv_i32 ret, TCGv_i32 arg1)
  {
-    if (tcg_op_supported(INDEX_op_ctpop_i32, TCG_TYPE_I32, 0)) {
-        tcg_gen_op2_i32(INDEX_op_ctpop_i32, ret, arg1);
-    } else if (tcg_op_supported(INDEX_op_ctpop_i64, TCG_TYPE_I64, 0)) {
+    if (tcg_op_supported(INDEX_op_ctpop, TCG_TYPE_I32, 0)) {
+        tcg_gen_op2_i32(INDEX_op_ctpop, ret, arg1);
+    } else if (tcg_op_supported(INDEX_op_ctpop, TCG_TYPE_I64, 0)) {
          TCGv_i64 t = tcg_temp_ebb_new_i64();
          tcg_gen_extu_i32_i64(t, arg1);
          tcg_gen_ctpop_i64(t, t);
@@ -2372,7 +2371,7 @@ void tcg_gen_ctz_i64(TCGv_i64 ret, TCGv_i64 arg1, 
TCGv_i64 arg2)
          tcg_gen_op3_i64(INDEX_op_ctz, ret, arg1, arg2);
          return;
      }
-    if (tcg_op_supported(INDEX_op_ctpop_i64, TCG_TYPE_I64, 0)) {
+    if (tcg_op_supported(INDEX_op_ctpop, TCG_TYPE_I64, 0)) {
          t = tcg_temp_ebb_new_i64();
          tcg_gen_subi_i64(t, arg1, 1);
          tcg_gen_andc_i64(t, t, arg1);
@@ -2406,7 +2405,7 @@ void tcg_gen_ctzi_i64(TCGv_i64 ret, TCGv_i64 arg1, 
uint64_t arg2)
          tcg_temp_free_i32(t32);
      } else if (arg2 == 64
                 && !tcg_op_supported(INDEX_op_ctz, TCG_TYPE_I64, 0)
-               && tcg_op_supported(INDEX_op_ctpop_i64, TCG_TYPE_I64, 0)) {
+               && tcg_op_supported(INDEX_op_ctpop, TCG_TYPE_I64, 0)) {
          /* This equivalence has the advantage of not requiring a fixup.  */
          TCGv_i64 t = tcg_temp_ebb_new_i64();
          tcg_gen_subi_i64(t, arg1, 1);
@@ -2435,12 +2434,12 @@ void tcg_gen_clrsb_i64(TCGv_i64 ret, TCGv_i64 arg)
  void tcg_gen_ctpop_i64(TCGv_i64 ret, TCGv_i64 arg1)
  {
      if (TCG_TARGET_REG_BITS == 64) {
-        if (tcg_op_supported(INDEX_op_ctpop_i64, TCG_TYPE_I64, 0)) {
-            tcg_gen_op2_i64(INDEX_op_ctpop_i64, ret, arg1);
+        if (tcg_op_supported(INDEX_op_ctpop, TCG_TYPE_I64, 0)) {
+            tcg_gen_op2_i64(INDEX_op_ctpop, ret, arg1);
              return;
          }
      } else {
-        if (tcg_op_supported(INDEX_op_ctpop_i32, TCG_TYPE_I32, 0)) {
+        if (tcg_op_supported(INDEX_op_ctpop, TCG_TYPE_I32, 0)) {
              tcg_gen_ctpop_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1));
              tcg_gen_ctpop_i32(TCGV_LOW(ret), TCGV_LOW(arg1));
              tcg_gen_add_i32(TCGV_LOW(ret), TCGV_LOW(ret), TCGV_HIGH(ret));
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 8344aee6c1..6095205307 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1027,8 +1027,7 @@ static const TCGOutOp * const all_outop[NB_OPS] = {
      OUTOP(INDEX_op_and, TCGOutOpBinary, outop_and),
      OUTOP(INDEX_op_andc, TCGOutOpBinary, outop_andc),
      OUTOP(INDEX_op_clz, TCGOutOpBinary, outop_clz),
-    OUTOP(INDEX_op_ctpop_i32, TCGOutOpUnary, outop_ctpop),
-    OUTOP(INDEX_op_ctpop_i64, TCGOutOpUnary, outop_ctpop),
+    OUTOP(INDEX_op_ctpop, TCGOutOpUnary, outop_ctpop),
      OUTOP(INDEX_op_ctz, TCGOutOpBinary, outop_ctz),
      OUTOP(INDEX_op_divs, TCGOutOpBinary, outop_divs),
      OUTOP(INDEX_op_divu, TCGOutOpBinary, outop_divu),
@@ -5444,8 +5443,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCGOp 
*op)
          }
          break;
- case INDEX_op_ctpop_i32:
-    case INDEX_op_ctpop_i64:
+    case INDEX_op_ctpop:
      case INDEX_op_neg:
      case INDEX_op_not:
          {
diff --git a/tcg/tci.c b/tcg/tci.c
index 8bcf48b251..d58a94ff28 100644
--- a/tcg/tci.c
+++ b/tcg/tci.c
@@ -577,8 +577,7 @@ uintptr_t QEMU_DISABLE_CFI tcg_qemu_tb_exec(CPUArchState 
*env,
              tci_args_rr(insn, &r0, &r1);
              regs[r0] = ~regs[r1];
              break;
-        case INDEX_op_ctpop_i32:
-        case INDEX_op_ctpop_i64:
+        case INDEX_op_ctpop:
              tci_args_rr(insn, &r0, &r1);
              regs[r0] = ctpop_tr(regs[r1]);
              break;
@@ -1023,6 +1022,7 @@ int print_insn_tci(bfd_vma addr, disassemble_info *info)
                             op_name, str_r(r0), str_r(r1), s2);
          break;
+ case INDEX_op_ctpop:
      case INDEX_op_mov:
      case INDEX_op_neg:
      case INDEX_op_not:
@@ -1033,8 +1033,6 @@ int print_insn_tci(bfd_vma addr, disassemble_info *info)
      case INDEX_op_bswap32_i32:
      case INDEX_op_bswap32_i64:
      case INDEX_op_bswap64_i64:
-    case INDEX_op_ctpop_i32:
-    case INDEX_op_ctpop_i64:
          tci_args_rr(insn, &r0, &r1);
          info->fprintf_func(info->stream, "%-12s  %s, %s",
                             op_name, str_r(r0), str_r(r1));
diff --git a/docs/devel/tcg-ops.rst b/docs/devel/tcg-ops.rst
index 92344b8786..fb7764e3c0 100644
--- a/docs/devel/tcg-ops.rst
+++ b/docs/devel/tcg-ops.rst
@@ -366,12 +366,12 @@ Logical
- | *t0* = *t1* ? ctz(*t1*) : *t2* - * - ctpop_i32/i64 *t0*, *t1*
+   * - ctpop *t0*, *t1*
- | *t0* = number of bits set in *t1*
         |
-       | With *ctpop* short for "count population", matching
-       | the function name used in ``include/qemu/host-utils.h``.
+       | The name *ctpop* is short for "count population", and matches
+         the function name used in ``include/qemu/host-utils.h``.
Shifts/Rotates
diff --git a/tcg/tci/tcg-target.c.inc b/tcg/tci/tcg-target.c.inc
index a931369a80..1d696a087e 100644
--- a/tcg/tci/tcg-target.c.inc
+++ b/tcg/tci/tcg-target.c.inc
@@ -883,7 +883,7 @@ static const TCGOutOpBinary outop_xor = {
static void tgen_ctpop(TCGContext *s, TCGType type, TCGReg a0, TCGReg a1)
  {
-    tcg_out_op_rr(s, glue(INDEX_op_ctpop_i,TCG_TARGET_REG_BITS), a0, a1);
+    tcg_out_op_rr(s, INDEX_op_ctpop, a0, a1);
  }
static TCGConstraintSetIndex cset_ctpop(TCGType type, unsigned flags)

Reviewed-by: Pierrick Bouvier <pierrick.bouv...@linaro.org>


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