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Diffstat (limited to 'gcc/config/rs6000/rs6000.c')
-rw-r--r--gcc/config/rs6000/rs6000.c77
1 files changed, 50 insertions, 27 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 09bc1b9..dc45a50 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -124,6 +124,12 @@ struct rs6000_cpu_select rs6000_select[3] =
{ (const char *)0, "-mtune=", 1, 0 },
};
+/* Always emit branch hint bits. */
+static GTY(()) bool rs6000_always_hint;
+
+/* Schedule instructions for group formation. */
+static GTY(()) bool rs6000_sched_groups;
+
/* Support adjust_priority scheduler hook
and -mprioritize-restricted-insns= option. */
const char *rs6000_sched_restricted_insns_priority_str;
@@ -714,6 +720,8 @@ rs6000_override_options (const char *default_cpu)
POWERPC_BASE_MASK | MASK_PPC_GFXOPT | MASK_POWERPC64},
{"power4", PROCESSOR_POWER4,
POWERPC_BASE_MASK | MASK_PPC_GFXOPT | MASK_POWERPC64},
+ {"power5", PROCESSOR_POWER5,
+ POWERPC_BASE_MASK | MASK_PPC_GFXOPT | MASK_POWERPC64},
{"powerpc", PROCESSOR_POWERPC, POWERPC_BASE_MASK},
{"powerpc64", PROCESSOR_POWERPC64,
POWERPC_BASE_MASK | MASK_POWERPC64},
@@ -914,6 +922,11 @@ rs6000_override_options (const char *default_cpu)
rs6000_long_double_type_size = 64;
}
+ rs6000_always_hint = (rs6000_cpu != PROCESSOR_POWER4
+ && rs6000_cpu != PROCESSOR_POWER5);
+ rs6000_sched_groups = (rs6000_cpu == PROCESSOR_POWER4
+ || rs6000_cpu == PROCESSOR_POWER5);
+
/* Handle -m(no-)longcall option. This is a bit of a cheap hack,
using TARGET_OPTIONS to handle a toggle switch, but we're out of
bits in target_flags so TARGET_SWITCHES cannot be used.
@@ -942,13 +955,15 @@ rs6000_override_options (const char *default_cpu)
}
/* Handle -mprioritize-restricted-insns option. */
- rs6000_sched_restricted_insns_priority = DEFAULT_RESTRICTED_INSNS_PRIORITY;
+ rs6000_sched_restricted_insns_priority
+ = (rs6000_sched_groups ? 1 : 0);
if (rs6000_sched_restricted_insns_priority_str)
rs6000_sched_restricted_insns_priority =
atoi (rs6000_sched_restricted_insns_priority_str);
/* Handle -msched-costly-dep option. */
- rs6000_sched_costly_dep = DEFAULT_SCHED_COSTLY_DEP;
+ rs6000_sched_costly_dep
+ = (rs6000_sched_groups ? store_to_load_dep_costly : no_dep_costly);
if (rs6000_sched_costly_dep_str)
{
if (! strcmp (rs6000_sched_costly_dep_str, "no"))
@@ -964,7 +979,8 @@ rs6000_override_options (const char *default_cpu)
}
/* Handle -minsert-sched-nops option. */
- rs6000_sched_insert_nops = DEFAULT_SCHED_FINISH_NOP_INSERTION_SCHEME;
+ rs6000_sched_insert_nops
+ = (rs6000_sched_groups ? sched_finish_regroup_exact : sched_finish_none);
if (rs6000_sched_insert_nops_str)
{
if (! strcmp (rs6000_sched_insert_nops_str, "no"))
@@ -10066,7 +10082,6 @@ output_cbranch (rtx op, const char *label, int reversed, rtx insn)
{
/* PROB is the difference from 50%. */
int prob = INTVAL (XEXP (note, 0)) - REG_BR_PROB_BASE / 2;
- bool always_hint = rs6000_cpu != PROCESSOR_POWER4;
/* Only hint for highly probable/improbable branches on newer
cpus as static prediction overrides processor dynamic
@@ -10074,7 +10089,7 @@ output_cbranch (rtx op, const char *label, int reversed, rtx insn)
assume not taken for branches that are very close to 50% as a
mispredicted taken branch is more expensive than a
mispredicted not-taken branch. */
- if (always_hint
+ if (rs6000_always_hint
|| abs (prob) > REG_BR_PROB_BASE / 100 * 48)
{
if (abs (prob) > REG_BR_PROB_BASE / 20
@@ -13885,7 +13900,7 @@ rs6000_variable_issue (FILE *stream ATTRIBUTE_UNUSED,
|| GET_CODE (PATTERN (insn)) == CLOBBER)
return more;
- if (rs6000_cpu == PROCESSOR_POWER4)
+ if (rs6000_sched_groups)
{
if (is_microcoded_insn (insn))
return 0;
@@ -13933,7 +13948,8 @@ rs6000_adjust_cost (rtx insn, rtx link, rtx dep_insn ATTRIBUTE_UNUSED,
|| rs6000_cpu_attr == CPU_PPC750
|| rs6000_cpu_attr == CPU_PPC7400
|| rs6000_cpu_attr == CPU_PPC7450
- || rs6000_cpu_attr == CPU_POWER4)
+ || rs6000_cpu_attr == CPU_POWER4
+ || rs6000_cpu_attr == CPU_POWER5)
&& recog_memoized (dep_insn)
&& (INSN_CODE (dep_insn) >= 0)
&& (get_attr_type (dep_insn) == TYPE_CMP
@@ -13965,7 +13981,7 @@ is_microcoded_insn (rtx insn)
|| GET_CODE (PATTERN (insn)) == CLOBBER)
return false;
- if (rs6000_cpu == PROCESSOR_POWER4)
+ if (rs6000_sched_groups)
{
enum attr_type type = get_attr_type (insn);
if (type == TYPE_LOAD_EXT_U
@@ -13990,7 +14006,7 @@ is_dispatch_slot_restricted (rtx insn)
{
enum attr_type type;
- if (rs6000_cpu != PROCESSOR_POWER4)
+ if (!rs6000_sched_groups)
return 0;
if (!insn
@@ -14002,21 +14018,25 @@ is_dispatch_slot_restricted (rtx insn)
type = get_attr_type (insn);
- switch (type){
- case TYPE_MFCR:
- case TYPE_MFCRF:
- case TYPE_MTCR:
- case TYPE_DELAYED_CR:
- case TYPE_CR_LOGICAL:
- case TYPE_MTJMPR:
- case TYPE_MFJMPR:
- return 1;
- case TYPE_IDIV:
- case TYPE_LDIV:
- return 2;
- default:
- return 0;
- }
+ switch (type)
+ {
+ case TYPE_MFCR:
+ case TYPE_MFCRF:
+ case TYPE_MTCR:
+ case TYPE_DELAYED_CR:
+ case TYPE_CR_LOGICAL:
+ case TYPE_MTJMPR:
+ case TYPE_MFJMPR:
+ return 1;
+ case TYPE_IDIV:
+ case TYPE_LDIV:
+ return 2;
+ default:
+ if (rs6000_cpu == PROCESSOR_POWER5
+ && is_cracked_insn (insn))
+ return 2;
+ return 0;
+ }
}
/* The function returns true if INSN is cracked into 2 instructions
@@ -14030,7 +14050,7 @@ is_cracked_insn (rtx insn)
|| GET_CODE (PATTERN (insn)) == CLOBBER)
return false;
- if (rs6000_cpu == PROCESSOR_POWER4)
+ if (rs6000_sched_groups)
{
enum attr_type type = get_attr_type (insn);
if (type == TYPE_LOAD_U || type == TYPE_STORE_U
@@ -14058,7 +14078,7 @@ is_branch_slot_insn (rtx insn)
|| GET_CODE (PATTERN (insn)) == CLOBBER)
return false;
- if (rs6000_cpu == PROCESSOR_POWER4)
+ if (rs6000_sched_groups)
{
enum attr_type type = get_attr_type (insn);
if (type == TYPE_BRANCH || type == TYPE_JMPREG)
@@ -14158,6 +14178,7 @@ rs6000_issue_rate (void)
case CPU_PPC630:
return 4;
case CPU_POWER4:
+ case CPU_POWER5:
return 5;
default:
return 1;
@@ -14711,7 +14732,7 @@ rs6000_sched_finish (FILE *dump, int sched_verbose)
if (sched_verbose)
fprintf (dump, "=== Finishing schedule.\n");
- if (reload_completed && rs6000_cpu == PROCESSOR_POWER4)
+ if (reload_completed && rs6000_sched_groups)
{
if (rs6000_sched_insert_nops == sched_finish_none)
return;
@@ -15905,6 +15926,7 @@ rs6000_rtx_costs (rtx x, int code, int outer_code ATTRIBUTE_UNUSED,
return true;
case PROCESSOR_POWER4:
+ case PROCESSOR_POWER5:
*total = (GET_CODE (XEXP (x, 1)) != CONST_INT
? GET_MODE (XEXP (x, 1)) != DImode
? COSTS_N_INSNS (3) : COSTS_N_INSNS (4)
@@ -15990,6 +16012,7 @@ rs6000_rtx_costs (rtx x, int code, int outer_code ATTRIBUTE_UNUSED,
return true;
case PROCESSOR_POWER4:
+ case PROCESSOR_POWER5:
*total = (GET_MODE (XEXP (x, 1)) != DImode
? COSTS_N_INSNS (18)
: COSTS_N_INSNS (34));
generated by cgit v1.1 at 2025-12-27 03:25:46 +0000