[gcc(refs/users/wschmidt/heads/builtins10)] rs6000: Builtin expansion, part 2

[William Schmidt]

https://gcc.gnu.org/g:dbb69c328a0ed4127bca80441b92c7728b252f76

commit dbb69c328a0ed4127bca80441b92c7728b252f76
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date:   Fri Mar 5 12:56:39 2021 -0600

    rs6000: Builtin expansion, part 2
    
    2021-03-05  Bill Schmidt  <wschmidt@linux.ibm.com>
    
    gcc/
            * config/rs6000/rs6000-call.c (rs6000_invalid_new_builtin):
            Implement.
            (rs6000_expand_ldst_mask): Likewise.
            (rs6000_init_builtins): Initialize altivec_builtin_mask_for_load.

Diff:
---
 gcc/config/rs6000/rs6000-call.c | 101 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 100 insertions(+), 1 deletion(-)

diff --git a/gcc/config/rs6000/rs6000-call.c b/gcc/config/rs6000/rs6000-call.c
index 201e730420a..8e8940364ea 100644
--- a/gcc/config/rs6000/rs6000-call.c
+++ b/gcc/config/rs6000/rs6000-call.c
@@ -11660,6 +11660,75 @@ rs6000_invalid_builtin (enum rs6000_builtins fncode)
 static void
 rs6000_invalid_new_builtin (enum rs6000_gen_builtins fncode)
 {
+  size_t uns_fncode = (size_t) fncode;
+  const char *name = rs6000_builtin_info_x[uns_fncode].bifname;
+
+  switch (rs6000_builtin_info_x[uns_fncode].enable)
+    {
+    case ENB_P5:
+      error ("%qs requires the %qs option", name, "-mcpu=power5");
+      break;
+    case ENB_P6:
+      error ("%qs requires the %qs option", name, "-mcpu=power6");
+      break;
+    case ENB_ALTIVEC:
+      error ("%qs requires the %qs option", name, "-maltivec");
+      break;
+    case ENB_CELL:
+      error ("%qs is only valid for the cell processor", name);
+      break;
+    case ENB_VSX:
+      error ("%qs requires the %qs option", name, "-mvsx");
+      break;
+    case ENB_P7:
+      error ("%qs requires the %qs option", name, "-mcpu=power7");
+      break;
+    case ENB_P7_64:
+      error ("%qs requires the %qs option and either the %qs or %qs option",
+	     name, "-mcpu=power7", "-m64", "-mpowerpc64");
+      break;
+    case ENB_P8:
+      error ("%qs requires the %qs option", name, "-mcpu=power8");
+      break;
+    case ENB_P8V:
+      error ("%qs requires the %qs option", name, "-mpower8-vector");
+      break;
+    case ENB_P9:
+      error ("%qs requires the %qs option", name, "-mcpu=power9");
+      break;
+    case ENB_P9_64:
+      error ("%qs requires the %qs option and either the %qs or %qs option",
+	     name, "-mcpu=power9", "-m64", "-mpowerpc64");
+      break;
+    case ENB_P9V:
+      error ("%qs requires the %qs option", name, "-mpower9-vector");
+      break;
+    case ENB_IEEE128_HW:
+      error ("%qs requires ISA 3.0 IEEE 128-bit floating point", name);
+      break;
+    case ENB_DFP:
+      error ("%qs requires the %qs option", name, "-mhard-dfp");
+      break;
+    case ENB_CRYPTO:
+      error ("%qs requires the %qs option", name, "-mcrypto");
+      break;
+    case ENB_HTM:
+      error ("%qs requires the %qs option", name, "-mhtm");
+      break;
+    case ENB_P10:
+      error ("%qs requires the %qs option", name, "-mcpu=power10");
+      break;
+    case ENB_P10_64:
+      error ("%qs requires the %qs option and either the %qs or %qs option",
+	     name, "-mcpu=power10", "-m64", "-mpowerpc64");
+      break;
+    case ENB_MMA:
+      error ("%qs requires the %qs option", name, "-mmma");
+      break;
+    default:
+    case ENB_ALWAYS:
+      gcc_unreachable ();
+    };
 }
 
 /* Target hook for early folding of built-ins, shamelessly stolen
@@ -14490,7 +14559,33 @@ rs6000_expand_builtin (tree exp, rtx target, rtx subtarget ATTRIBUTE_UNUSED,
 rtx
 rs6000_expand_ldst_mask (rtx target, tree arg0)
  {
-  return target;
+  int icode2 = (BYTES_BIG_ENDIAN ? (int) CODE_FOR_altivec_lvsr_direct
+		: (int) CODE_FOR_altivec_lvsl_direct);
+  machine_mode tmode = insn_data[icode2].operand[0].mode;
+  machine_mode mode = insn_data[icode2].operand[1].mode;
+  rtx op, addr, pat;
+
+  gcc_assert (TARGET_ALTIVEC);
+
+  gcc_assert (POINTER_TYPE_P (TREE_TYPE (arg0)));
+  op = expand_expr (arg0, NULL_RTX, Pmode, EXPAND_NORMAL);
+  addr = memory_address (mode, op);
+  /* We need to negate the address.  */
+  op = gen_reg_rtx (GET_MODE (addr));
+  emit_insn (gen_rtx_SET (op, gen_rtx_NEG (GET_MODE (addr), addr)));
+  op = gen_rtx_MEM (mode, op);
+
+  if (target == 0
+      || GET_MODE (target) != tmode
+      || ! (*insn_data[icode2].operand[0].predicate) (target, tmode))
+    target = gen_reg_rtx (tmode);
+
+  pat = GEN_FCN (icode2) (target, op);
+  if (!pat)
+    return 0;
+  emit_insn (pat);
+
+   return target;
  }
 
 /* Expand the CPU builtin in FCODE and store the result in TARGET.  */
@@ -15389,6 +15484,10 @@ rs6000_init_builtins (void)
   /* Execute the autogenerated initialization code for builtins.  */
   rs6000_autoinit_builtins ();
 
+  if (new_builtins_are_live)
+    altivec_builtin_mask_for_load
+      = rs6000_builtin_decls_x[RS6000_BIF_MASK_FOR_LOAD];
+
   if (new_builtins_are_live)
     {
 #ifdef SUBTARGET_INIT_BUILTINS