rs6000-cpus.def (ISA_FUTURE_MASKS_SERVER): Add OPTION_MASK_PCREL.

[gcc.git] / gcc / config / rs6000 / rs6000.c

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index d08ba6c2d01eb7cee244518baf255238f7f7f24f..7a2e43fd72a33c0f5316b627ee88db10f3eaaa69 100644 (file)
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4296,6 +4296,15 @@ rs6000_option_override_internal (bool global_init_p)
       rs6000_isa_flags &= ~OPTION_MASK_FLOAT128_HW;
     }
 
+  /* -mpcrel requires the prefixed load/store support on FUTURE systems.  */
+  if (!TARGET_FUTURE && TARGET_PCREL)
+    {
+      if ((rs6000_isa_flags_explicit & OPTION_MASK_PCREL) != 0)
+       error ("%qs requires %qs", "-mpcrel", "-mcpu=future");
+
+      rs6000_isa_flags &= ~OPTION_MASK_PCREL;
+    }
+
   /* Print the options after updating the defaults.  */
   if (TARGET_DEBUG_REG || TARGET_DEBUG_TARGET)
     rs6000_print_isa_options (stderr, 0, "after defaults", rs6000_isa_flags);
@@ -4436,6 +4445,7 @@ rs6000_option_override_internal (bool global_init_p)
                        && rs6000_tune != PROCESSOR_POWER7
                        && rs6000_tune != PROCESSOR_POWER8
                        && rs6000_tune != PROCESSOR_POWER9
+                       && rs6000_tune != PROCESSOR_FUTURE
                        && rs6000_tune != PROCESSOR_PPCA2
                        && rs6000_tune != PROCESSOR_CELL
                        && rs6000_tune != PROCESSOR_PPC476);
@@ -4449,6 +4459,7 @@ rs6000_option_override_internal (bool global_init_p)
                                 || rs6000_tune == PROCESSOR_POWER7
                                 || rs6000_tune == PROCESSOR_POWER8
                                 || rs6000_tune == PROCESSOR_POWER9
+                                || rs6000_tune == PROCESSOR_FUTURE
                                 || rs6000_tune == PROCESSOR_PPCE500MC
                                 || rs6000_tune == PROCESSOR_PPCE500MC64
                                 || rs6000_tune == PROCESSOR_PPCE5500
@@ -4749,6 +4760,7 @@ rs6000_option_override_internal (bool global_init_p)
        break;
 
       case PROCESSOR_POWER9:
+      case PROCESSOR_FUTURE:
        rs6000_cost = &power9_cost;
        break;
 
@@ -5638,6 +5650,9 @@ static const char *rs6000_machine;
 static const char *
 rs6000_machine_from_flags (void)
 {
+  if ((rs6000_isa_flags & (ISA_FUTURE_MASKS_SERVER & ~ISA_3_0_MASKS_SERVER))
+      != 0)
+    return "future";
   if ((rs6000_isa_flags & (ISA_3_0_MASKS_SERVER & ~ISA_2_7_MASKS_SERVER)) != 0)
     return "power9";
   if ((rs6000_isa_flags & (ISA_2_7_MASKS_SERVER & ~ISA_2_6_MASKS_SERVER)) != 0)
@@ -9109,6 +9124,7 @@ rs6000_reassociation_width (unsigned int opc ATTRIBUTE_UNUSED,
     {
     case PROCESSOR_POWER8:
     case PROCESSOR_POWER9:
+    case PROCESSOR_FUTURE:
       if (DECIMAL_FLOAT_MODE_P (mode))
        return 1;
       if (VECTOR_MODE_P (mode))
@@ -30183,7 +30199,8 @@ rs6000_adjust_cost (rtx_insn *insn, int dep_type, rtx_insn *dep_insn, int cost,
           some cycles later.  */
 
        /* Separate a load from a narrower, dependent store.  */
-       if ((rs6000_sched_groups || rs6000_tune == PROCESSOR_POWER9)
+       if ((rs6000_sched_groups || rs6000_tune == PROCESSOR_POWER9
+            || rs6000_tune == PROCESSOR_FUTURE)
            && GET_CODE (PATTERN (insn)) == SET
            && GET_CODE (PATTERN (dep_insn)) == SET
            && MEM_P (XEXP (PATTERN (insn), 1))
@@ -30221,6 +30238,7 @@ rs6000_adjust_cost (rtx_insn *insn, int dep_type, rtx_insn *dep_insn, int cost,
                 || rs6000_tune == PROCESSOR_POWER7
                 || rs6000_tune == PROCESSOR_POWER8
                 || rs6000_tune == PROCESSOR_POWER9
+                || rs6000_tune == PROCESSOR_FUTURE
                  || rs6000_tune == PROCESSOR_CELL)
                 && recog_memoized (dep_insn)
                 && (INSN_CODE (dep_insn) >= 0))
@@ -30800,6 +30818,7 @@ rs6000_issue_rate (void)
   case PROCESSOR_POWER8:
     return 7;
   case PROCESSOR_POWER9:
+  case PROCESSOR_FUTURE:
     return 6;
   default:
     return 1;
@@ -34652,7 +34671,8 @@ rs6000_register_move_cost (machine_mode mode,
                 can't be a nop, whereas with ideal register
                 allocation a move within the same class might turn
                 out to be a nop.  */
-             if (rs6000_tune == PROCESSOR_POWER9)
+             if (rs6000_tune == PROCESSOR_POWER9
+                 || rs6000_tune == PROCESSOR_FUTURE)
                ret = 3 * hard_regno_nregs (FIRST_GPR_REGNO, mode);
              else
                ret = 4 * hard_regno_nregs (FIRST_GPR_REGNO, mode);
@@ -36254,6 +36274,7 @@ static struct rs6000_opt_mask const rs6000_opt_masks[] =
   { "float128",                        OPTION_MASK_FLOAT128_KEYWORD,   false, true  },
   { "float128-hardware",       OPTION_MASK_FLOAT128_HW,        false, true  },
   { "fprnd",                   OPTION_MASK_FPRND,              false, true  },
+  { "future",                  OPTION_MASK_FUTURE,             false, true  },
   { "hard-dfp",                        OPTION_MASK_DFP,                false, true  },
   { "htm",                     OPTION_MASK_HTM,                false, true  },
   { "isel",                    OPTION_MASK_ISEL,               false, true  },
@@ -36262,6 +36283,7 @@ static struct rs6000_opt_mask const rs6000_opt_masks[] =
   { "modulo",                  OPTION_MASK_MODULO,             false, true  },
   { "mulhw",                   OPTION_MASK_MULHW,              false, true  },
   { "multiple",                        OPTION_MASK_MULTIPLE,           false, true  },
+  { "pcrel",                   OPTION_MASK_PCREL,              false, true  },
   { "popcntb",                 OPTION_MASK_POPCNTB,            false, true  },
   { "popcntd",                 OPTION_MASK_POPCNTD,            false, true  },
   { "power8-fusion",           OPTION_MASK_P8_FUSION,          false, true  },
@@ -38101,6 +38123,34 @@ rs6000_save_toc_in_prologue_p (void)
   return (cfun && cfun->machine && cfun->machine->save_toc_in_prologue);
 }
 
+/* Return whether we should generate PC-relative code for FNDECL.  */
+bool
+rs6000_fndecl_pcrel_p (const_tree fndecl)
+{
+  if (DEFAULT_ABI != ABI_ELFv2)
+    return false;
+
+  struct cl_target_option *opts = target_opts_for_fn (fndecl);
+
+  return ((opts->x_rs6000_isa_flags & OPTION_MASK_PCREL) != 0
+         && TARGET_CMODEL == CMODEL_MEDIUM);
+}
+
+/* Return whether we should generate PC-relative code for *FN.  */
+bool
+rs6000_pcrel_p (struct function *fn)
+{
+  if (DEFAULT_ABI != ABI_ELFv2)
+    return false;
+
+  /* Optimize usual case.  */
+  if (fn == cfun)
+    return ((rs6000_isa_flags & OPTION_MASK_PCREL) != 0
+           && TARGET_CMODEL == CMODEL_MEDIUM);
+
+  return rs6000_fndecl_pcrel_p (fn->decl);
+}
+
 #ifdef HAVE_GAS_HIDDEN
 # define USE_HIDDEN_LINKONCE 1
 #else