[gcc(refs/users/meissner/heads/work168)] Add -mcpu=power11 support.
Michael Meissner
meissner@gcc.gnu.org
Mon Jun 3 19:29:58 GMT 2024
https://gcc.gnu.org/g:0c32a4bffcca0fc4ea3afbb8c7e1633197aa127f
commit 0c32a4bffcca0fc4ea3afbb8c7e1633197aa127f
Author: Michael Meissner <meissner@linux.ibm.com>
Date: Mon Jun 3 15:27:32 2024 -0400
Add -mcpu=power11 support.
This patch adds the power11 option to the -mcpu= and -mtune= switches.
This patch treats the power11 like a power10 in terms of costs and reassociation
width.
This patch issues a ".machine power11" to the assembly file if you use
-mcpu=power11.
This patch defines _ARCH_PWR11 if the user uses -mcpu=power11.
This patch allows GCC to be configured with the --with-cpu=power11 and
--with-tune=power11 options.
This patch passes -mpwr11 to the assembler if the user uses -mcpu=power11.
This patch adds support for using "power11" in the __builtin_cpu_is built-in
function.
2024-06-03 Michael Meissner <meissner@linux.ibm.com>
gcc/
* config.gcc (rs6000*-*-*, powerpc*-*-*): Add support for power11.
* config/rs6000/aix71.h (ASM_CPU_SPEC): Add support for -mcpu=power11.
* config/rs6000/aix72.h (ASM_CPU_SPEC): Likewise.
* config/rs6000/aix73.h (ASM_CPU_SPEC): Likewise.
* config/rs6000/driver-rs6000.cc (asm_names): Likewise.
* config/rs6000/ppc-auxv.h (PPC_PLATFORM_POWER11): New define.
* config/rs6000/rs6000-builtin.cc (cpu_is_info): Add power11.
* config/rs6000/rs6000-c.cc (rs6000_target_modify_macros): Define
_ARCH_PWR11 if -mcpu=power11.
* config/rs6000/rs6000-cpus.def (ISA_POWER11_MASKS_SERVER): New define.
(POWERPC_MASKS): Add power11 isa bit.
(power11 cpu): Add power11 definition.
* config/rs6000/rs6000-opts.h (PROCESSOR_POWER11): Add power11 processor.
* config/rs6000/rs6000-string.cc (expand_compare_loop): Likewise.
* config/rs6000/rs6000-tables.opt: Regenerate.
* config/rs6000/rs6000.cc (rs6000_option_override_internal): Add power11
support.
(rs6000_machine_from_flags): Likewise.
(rs6000_reassociation_width): Likewise.
(rs6000_adjust_cost): Likewise.
(rs6000_issue_rate): Likewise.
(rs6000_sched_reorder): Likewise.
(rs6000_sched_reorder2): Likewise.
(rs6000_register_move_cost): Likewise.
(rs6000_opt_masks): Likewise.
* config/rs6000/rs6000.h (ASM_CPU_SPEC): Likewise.
* config/rs6000/rs6000.md (cpu attribute): Add power11.
* config/rs6000/rs6000.opt (-mpower11): Add internal power11 ISA flag.
* doc/invoke.texi (RS/6000 and PowerPC Options): Document -mcpu=power11.
Diff:
---
gcc/config.gcc | 6 ++++--
gcc/config/rs6000/aix71.h | 1 +
gcc/config/rs6000/aix72.h | 1 +
gcc/config/rs6000/aix73.h | 1 +
gcc/config/rs6000/driver-rs6000.cc | 2 ++
gcc/config/rs6000/ppc-auxv.h | 3 +--
gcc/config/rs6000/rs6000-builtin.cc | 1 +
gcc/config/rs6000/rs6000-c.cc | 2 ++
gcc/config/rs6000/rs6000-cpus.def | 5 +++++
gcc/config/rs6000/rs6000-opts.h | 3 ++-
gcc/config/rs6000/rs6000-string.cc | 1 +
gcc/config/rs6000/rs6000-tables.opt | 3 +++
gcc/config/rs6000/rs6000.cc | 32 ++++++++++++++++++++++++--------
gcc/config/rs6000/rs6000.h | 1 +
gcc/config/rs6000/rs6000.md | 2 +-
gcc/config/rs6000/rs6000.opt | 3 +++
gcc/doc/invoke.texi | 5 +++--
17 files changed, 56 insertions(+), 16 deletions(-)
diff --git a/gcc/config.gcc b/gcc/config.gcc
index e500ba63e32..1364bc7b361 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -533,7 +533,9 @@ powerpc*-*-*)
extra_headers="${extra_headers} ppu_intrinsics.h spu2vmx.h vec_types.h si2vmx.h"
extra_headers="${extra_headers} amo.h"
case x$with_cpu in
- xpowerpc64|xdefault64|x6[23]0|x970|xG5|xpower[3456789]|xpower10|xpower6x|xrs64a|xcell|xa2|xe500mc64|xe5500|xe6500)
+ xpowerpc64 | xdefault64 | x6[23]0 | x970 | xG5 | xpower[3456789] \
+ | xpower1[01] | xpower6x | xrs64a | xcell | xa2 | xe500mc64 \
+ | xe5500 | xe6500)
cpu_is_64bit=yes
;;
esac
@@ -5621,7 +5623,7 @@ case "${target}" in
eval "with_$which=405"
;;
"" | common | native \
- | power[3456789] | power10 | power5+ | power6x \
+ | power[3456789] | power1[01] | power5+ | power6x \
| powerpc | powerpc64 | powerpc64le \
| rs64 \
| 401 | 403 | 405 | 405fp | 440 | 440fp | 464 | 464fp \
diff --git a/gcc/config/rs6000/aix71.h b/gcc/config/rs6000/aix71.h
index 24bc301e37d..41037b3852d 100644
--- a/gcc/config/rs6000/aix71.h
+++ b/gcc/config/rs6000/aix71.h
@@ -79,6 +79,7 @@ do { \
#undef ASM_CPU_SPEC
#define ASM_CPU_SPEC \
"%{mcpu=native: %(asm_cpu_native); \
+ mcpu=power11: -mpwr11; \
mcpu=power10: -mpwr10; \
mcpu=power9: -mpwr9; \
mcpu=power8: -mpwr8; \
diff --git a/gcc/config/rs6000/aix72.h b/gcc/config/rs6000/aix72.h
index c43974f577a..fe59f8319b4 100644
--- a/gcc/config/rs6000/aix72.h
+++ b/gcc/config/rs6000/aix72.h
@@ -79,6 +79,7 @@ do { \
#undef ASM_CPU_SPEC
#define ASM_CPU_SPEC \
"%{mcpu=native: %(asm_cpu_native); \
+ mcpu=power11: -mpwr11; \
mcpu=power10: -mpwr10; \
mcpu=power9: -mpwr9; \
mcpu=power8: -mpwr8; \
diff --git a/gcc/config/rs6000/aix73.h b/gcc/config/rs6000/aix73.h
index b1572bde81f..1318b0b3662 100644
--- a/gcc/config/rs6000/aix73.h
+++ b/gcc/config/rs6000/aix73.h
@@ -79,6 +79,7 @@ do { \
#undef ASM_CPU_SPEC
#define ASM_CPU_SPEC \
"%{mcpu=native: %(asm_cpu_native); \
+ mcpu=power11: -mpwr11; \
mcpu=power10: -mpwr10; \
mcpu=power9: -mpwr9; \
mcpu=power8: -mpwr8; \
diff --git a/gcc/config/rs6000/driver-rs6000.cc b/gcc/config/rs6000/driver-rs6000.cc
index 3ebbaa42622..f4900724b98 100644
--- a/gcc/config/rs6000/driver-rs6000.cc
+++ b/gcc/config/rs6000/driver-rs6000.cc
@@ -451,6 +451,7 @@ static const struct asm_name asm_names[] = {
{ "power8", "-mpwr8" },
{ "power9", "-mpwr9" },
{ "power10", "-mpwr10" },
+ { "power11", "-mpwr11" },
{ "powerpc", "-mppc" },
{ "rs64", "-mppc" },
{ "603", "-m603" },
@@ -479,6 +480,7 @@ static const struct asm_name asm_names[] = {
{ "power8", "-mpower8" },
{ "power9", "-mpower9" },
{ "power10", "-mpower10" },
+ { "power11", "-mpower11" },
{ "a2", "-ma2" },
{ "powerpc", "-mppc" },
{ "powerpc64", "-mppc64" },
diff --git a/gcc/config/rs6000/ppc-auxv.h b/gcc/config/rs6000/ppc-auxv.h
index 364bba427d1..ed269e3b72b 100644
--- a/gcc/config/rs6000/ppc-auxv.h
+++ b/gcc/config/rs6000/ppc-auxv.h
@@ -47,9 +47,8 @@
#define PPC_PLATFORM_PPC476 12
#define PPC_PLATFORM_POWER8 13
#define PPC_PLATFORM_POWER9 14
-
-/* This is not yet official. */
#define PPC_PLATFORM_POWER10 15
+#define PPC_PLATFORM_POWER11 16
/* AT_HWCAP bits. These must match the values defined in the Linux kernel. */
#define PPC_FEATURE_32 0x80000000
diff --git a/gcc/config/rs6000/rs6000-builtin.cc b/gcc/config/rs6000/rs6000-builtin.cc
index 320affd79e3..0933ee1e6e7 100644
--- a/gcc/config/rs6000/rs6000-builtin.cc
+++ b/gcc/config/rs6000/rs6000-builtin.cc
@@ -2493,6 +2493,7 @@ static const struct
const char *cpu;
unsigned int cpuid;
} cpu_is_info[] = {
+ { "power11", PPC_PLATFORM_POWER11 },
{ "power10", PPC_PLATFORM_POWER10 },
{ "power9", PPC_PLATFORM_POWER9 },
{ "power8", PPC_PLATFORM_POWER8 },
diff --git a/gcc/config/rs6000/rs6000-c.cc b/gcc/config/rs6000/rs6000-c.cc
index bd493ab87c5..803ad53dc54 100644
--- a/gcc/config/rs6000/rs6000-c.cc
+++ b/gcc/config/rs6000/rs6000-c.cc
@@ -435,6 +435,8 @@ rs6000_target_modify_macros (bool define_p, HOST_WIDE_INT flags)
rs6000_define_or_undefine_macro (define_p, "_ARCH_PWR9");
if ((flags & OPTION_MASK_POWER10) != 0)
rs6000_define_or_undefine_macro (define_p, "_ARCH_PWR10");
+ if ((flags & OPTION_MASK_POWER11) != 0)
+ rs6000_define_or_undefine_macro (define_p, "_ARCH_PWR11");
if ((flags & OPTION_MASK_SOFT_FLOAT) != 0)
rs6000_define_or_undefine_macro (define_p, "_SOFT_FLOAT");
if ((flags & OPTION_MASK_RECIP_PRECISION) != 0)
diff --git a/gcc/config/rs6000/rs6000-cpus.def b/gcc/config/rs6000/rs6000-cpus.def
index 6ee678e69c3..40fe6f4c12c 100644
--- a/gcc/config/rs6000/rs6000-cpus.def
+++ b/gcc/config/rs6000/rs6000-cpus.def
@@ -86,6 +86,9 @@
| OPTION_MASK_POWER10 \
| OTHER_POWER10_MASKS)
+#define ISA_POWER11_MASKS_SERVER (ISA_3_1_MASKS_SERVER \
+ | OPTION_MASK_POWER11)
+
/* Flags that need to be turned off if -mno-vsx. */
#define OTHER_VSX_VECTOR_MASKS (OPTION_MASK_EFFICIENT_UNALIGNED_VSX \
| OPTION_MASK_FLOAT128_KEYWORD \
@@ -123,6 +126,7 @@
| OPTION_MASK_FLOAT128_KEYWORD \
| OPTION_MASK_FPRND \
| OPTION_MASK_POWER10 \
+ | OPTION_MASK_POWER11 \
| OPTION_MASK_P10_FUSION \
| OPTION_MASK_HTM \
| OPTION_MASK_ISEL \
@@ -256,3 +260,4 @@ RS6000_CPU ("powerpc64", PROCESSOR_POWERPC64, OPTION_MASK_PPC_GFXOPT
RS6000_CPU ("powerpc64le", PROCESSOR_POWER8, MASK_POWERPC64
| ISA_2_7_MASKS_SERVER | OPTION_MASK_HTM)
RS6000_CPU ("rs64", PROCESSOR_RS64A, OPTION_MASK_PPC_GFXOPT | MASK_POWERPC64)
+RS6000_CPU ("power11", PROCESSOR_POWER11, MASK_POWERPC64 | ISA_POWER11_MASKS_SERVER)
diff --git a/gcc/config/rs6000/rs6000-opts.h b/gcc/config/rs6000/rs6000-opts.h
index 33fd0efc936..4f5af57ae1a 100644
--- a/gcc/config/rs6000/rs6000-opts.h
+++ b/gcc/config/rs6000/rs6000-opts.h
@@ -67,7 +67,8 @@ enum processor_type
PROCESSOR_MPCCORE,
PROCESSOR_CELL,
PROCESSOR_PPCA2,
- PROCESSOR_TITAN
+ PROCESSOR_TITAN,
+ PROCESSOR_POWER11
};
diff --git a/gcc/config/rs6000/rs6000-string.cc b/gcc/config/rs6000/rs6000-string.cc
index 917f5572a6d..9c8a81172e3 100644
--- a/gcc/config/rs6000/rs6000-string.cc
+++ b/gcc/config/rs6000/rs6000-string.cc
@@ -964,6 +964,7 @@ expand_compare_loop (rtx operands[])
break;
case PROCESSOR_POWER9:
case PROCESSOR_POWER10:
+ case PROCESSOR_POWER11:
if (bytes_is_const)
max_bytes = 191;
else
diff --git a/gcc/config/rs6000/rs6000-tables.opt b/gcc/config/rs6000/rs6000-tables.opt
index 65f46709716..7e5bb6e7658 100644
--- a/gcc/config/rs6000/rs6000-tables.opt
+++ b/gcc/config/rs6000/rs6000-tables.opt
@@ -197,3 +197,6 @@ Enum(rs6000_cpu_opt_value) String(powerpc64le) Value(55)
EnumValue
Enum(rs6000_cpu_opt_value) String(rs64) Value(56)
+EnumValue
+Enum(rs6000_cpu_opt_value) String(power11) Value(57)
+
diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
index e4dc629ddcc..4acad583b54 100644
--- a/gcc/config/rs6000/rs6000.cc
+++ b/gcc/config/rs6000/rs6000.cc
@@ -1067,7 +1067,7 @@ struct processor_costs power9_cost = {
COSTS_N_INSNS (3), /* SF->DF convert */
};
-/* Instruction costs on POWER10 processors. */
+/* Instruction costs on POWER10/POWER11 processors. */
static const
struct processor_costs power10_cost = {
COSTS_N_INSNS (2), /* mulsi */
@@ -4374,7 +4374,8 @@ rs6000_option_override_internal (bool global_init_p)
generating power10 instructions. */
if (!(rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION))
{
- if (rs6000_tune == PROCESSOR_POWER10)
+ if (rs6000_tune == PROCESSOR_POWER10
+ || rs6000_tune == PROCESSOR_POWER11)
rs6000_isa_flags |= OPTION_MASK_P10_FUSION;
else
rs6000_isa_flags &= ~OPTION_MASK_P10_FUSION;
@@ -4403,6 +4404,7 @@ rs6000_option_override_internal (bool global_init_p)
&& rs6000_tune != PROCESSOR_POWER8
&& rs6000_tune != PROCESSOR_POWER9
&& rs6000_tune != PROCESSOR_POWER10
+ && rs6000_tune != PROCESSOR_POWER11
&& rs6000_tune != PROCESSOR_PPCA2
&& rs6000_tune != PROCESSOR_CELL
&& rs6000_tune != PROCESSOR_PPC476);
@@ -4417,6 +4419,7 @@ rs6000_option_override_internal (bool global_init_p)
|| rs6000_tune == PROCESSOR_POWER8
|| rs6000_tune == PROCESSOR_POWER9
|| rs6000_tune == PROCESSOR_POWER10
+ || rs6000_tune == PROCESSOR_POWER11
|| rs6000_tune == PROCESSOR_PPCE500MC
|| rs6000_tune == PROCESSOR_PPCE500MC64
|| rs6000_tune == PROCESSOR_PPCE5500
@@ -4716,6 +4719,7 @@ rs6000_option_override_internal (bool global_init_p)
break;
case PROCESSOR_POWER10:
+ case PROCESSOR_POWER11:
rs6000_cost = &power10_cost;
break;
@@ -5875,6 +5879,8 @@ rs6000_machine_from_flags (void)
/* Disable the flags that should never influence the .machine selection. */
flags &= ~(OPTION_MASK_PPC_GFXOPT | OPTION_MASK_PPC_GPOPT | OPTION_MASK_ISEL);
+ if ((flags & (ISA_POWER11_MASKS_SERVER & ~ISA_3_1_MASKS_SERVER)) != 0)
+ return "power11";
if ((flags & (ISA_3_1_MASKS_SERVER & ~ISA_3_0_MASKS_SERVER)) != 0)
return "power10";
if ((flags & (ISA_3_0_MASKS_SERVER & ~ISA_2_7_MASKS_SERVER)) != 0)
@@ -10121,6 +10127,7 @@ rs6000_reassociation_width (unsigned int opc ATTRIBUTE_UNUSED,
case PROCESSOR_POWER8:
case PROCESSOR_POWER9:
case PROCESSOR_POWER10:
+ case PROCESSOR_POWER11:
if (DECIMAL_FLOAT_MODE_P (mode))
return 1;
if (VECTOR_MODE_P (mode))
@@ -18202,7 +18209,8 @@ rs6000_adjust_cost (rtx_insn *insn, int dep_type, rtx_insn *dep_insn, int cost,
/* Separate a load from a narrower, dependent store. */
if ((rs6000_sched_groups || rs6000_tune == PROCESSOR_POWER9
- || rs6000_tune == PROCESSOR_POWER10)
+ || rs6000_tune == PROCESSOR_POWER10
+ || rs6000_tune == PROCESSOR_POWER11)
&& GET_CODE (PATTERN (insn)) == SET
&& GET_CODE (PATTERN (dep_insn)) == SET
&& MEM_P (XEXP (PATTERN (insn), 1))
@@ -18241,6 +18249,7 @@ rs6000_adjust_cost (rtx_insn *insn, int dep_type, rtx_insn *dep_insn, int cost,
|| rs6000_tune == PROCESSOR_POWER8
|| rs6000_tune == PROCESSOR_POWER9
|| rs6000_tune == PROCESSOR_POWER10
+ || rs6000_tune == PROCESSOR_POWER11
|| rs6000_tune == PROCESSOR_CELL)
&& recog_memoized (dep_insn)
&& (INSN_CODE (dep_insn) >= 0))
@@ -18815,6 +18824,7 @@ rs6000_issue_rate (void)
case PROCESSOR_POWER9:
return 6;
case PROCESSOR_POWER10:
+ case PROCESSOR_POWER11:
return 8;
default:
return 1;
@@ -19530,8 +19540,10 @@ rs6000_sched_reorder (FILE *dump ATTRIBUTE_UNUSED, int sched_verbose,
if (rs6000_tune == PROCESSOR_POWER6)
load_store_pendulum = 0;
- /* Do Power10 dependent reordering. */
- if (rs6000_tune == PROCESSOR_POWER10 && last_scheduled_insn)
+ /* Do Power10/power11 dependent reordering. */
+ if (last_scheduled_insn
+ && (rs6000_tune == PROCESSOR_POWER10
+ || rs6000_tune == PROCESSOR_POWER11))
power10_sched_reorder (ready, n_ready - 1);
return rs6000_issue_rate ();
@@ -19555,8 +19567,10 @@ rs6000_sched_reorder2 (FILE *dump, int sched_verbose, rtx_insn **ready,
&& recog_memoized (last_scheduled_insn) >= 0)
return power9_sched_reorder2 (ready, *pn_ready - 1);
- /* Do Power10 dependent reordering. */
- if (rs6000_tune == PROCESSOR_POWER10 && last_scheduled_insn)
+ /* Do Power10/power11 dependent reordering. */
+ if (last_scheduled_insn
+ && (rs6000_tune == PROCESSOR_POWER10
+ || rs6000_tune == PROCESSOR_POWER11))
return power10_sched_reorder (ready, *pn_ready - 1);
return cached_can_issue_more;
@@ -22773,7 +22787,8 @@ rs6000_register_move_cost (machine_mode mode,
allocation a move within the same class might turn
out to be a nop. */
if (rs6000_tune == PROCESSOR_POWER9
- || rs6000_tune == PROCESSOR_POWER10)
+ || rs6000_tune == PROCESSOR_POWER10
+ || rs6000_tune == PROCESSOR_POWER11)
ret = 3 * hard_regno_nregs (FIRST_GPR_REGNO, mode);
else
ret = 4 * hard_regno_nregs (FIRST_GPR_REGNO, mode);
@@ -24432,6 +24447,7 @@ static struct rs6000_opt_mask const rs6000_opt_masks[] =
{ "float128-hardware", OPTION_MASK_FLOAT128_HW, false, true },
{ "fprnd", OPTION_MASK_FPRND, false, true },
{ "power10", OPTION_MASK_POWER10, false, true },
+ { "power11", OPTION_MASK_POWER11, false, false },
{ "hard-dfp", OPTION_MASK_DFP, false, true },
{ "htm", OPTION_MASK_HTM, false, true },
{ "isel", OPTION_MASK_ISEL, false, true },
diff --git a/gcc/config/rs6000/rs6000.h b/gcc/config/rs6000/rs6000.h
index 2cde2e329b0..197922fbb84 100644
--- a/gcc/config/rs6000/rs6000.h
+++ b/gcc/config/rs6000/rs6000.h
@@ -106,6 +106,7 @@
you make changes here, make them also there. */
#define ASM_CPU_SPEC \
"%{mcpu=native: %(asm_cpu_native); \
+ mcpu=power11: -mpower11; \
mcpu=power10: -mpower10; \
mcpu=power9: -mpower9; \
mcpu=power8|mcpu=powerpc64le: -mpower8; \
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index a5d20594789..93a8613079f 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -351,7 +351,7 @@
ppc403,ppc405,ppc440,ppc476,
ppc8540,ppc8548,ppce300c2,ppce300c3,ppce500mc,ppce500mc64,ppce5500,ppce6500,
power4,power5,power6,power7,power8,power9,power10,
- rs64a,mpccore,cell,ppca2,titan"
+ rs64a,mpccore,cell,ppca2,titan,power11"
(const (symbol_ref "(enum attr_cpu) rs6000_tune")))
;; The ISA we implement.
diff --git a/gcc/config/rs6000/rs6000.opt b/gcc/config/rs6000/rs6000.opt
index e8ca70340df..fc00e939d88 100644
--- a/gcc/config/rs6000/rs6000.opt
+++ b/gcc/config/rs6000/rs6000.opt
@@ -585,6 +585,9 @@ Target Undocumented Var(rs6000_speculate_indirect_jumps) Init(1) Save
mpower10
Target Undocumented Mask(POWER10) Var(rs6000_isa_flags) WarnRemoved
+mpower11
+Target Undocumented Mask(POWER11) Var(rs6000_isa_flags) Warn(Do not use %<-mpower11>)
+
mprefixed
Target Mask(PREFIXED) Var(rs6000_isa_flags)
Generate (do not generate) prefixed memory instructions.
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 45115b5fbed..fa9a32d47e4 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -31399,8 +31399,9 @@ Supported values for @var{cpu_type} are @samp{401}, @samp{403},
@samp{e6500}, @samp{ec603e}, @samp{G3}, @samp{G4}, @samp{G5},
@samp{titan}, @samp{power3}, @samp{power4}, @samp{power5}, @samp{power5+},
@samp{power6}, @samp{power6x}, @samp{power7}, @samp{power8},
-@samp{power9}, @samp{power10}, @samp{powerpc}, @samp{powerpc64},
-@samp{powerpc64le}, @samp{rs64}, and @samp{native}.
+@samp{power9}, @samp{power10}, @samp{power11},
+@samp{powerpc}, @samp{powerpc64}, @samp{powerpc64le},
+@samp{rs64}, and @samp{native}.
@option{-mcpu=powerpc}, @option{-mcpu=powerpc64}, and
@option{-mcpu=powerpc64le} specify pure 32-bit PowerPC (either
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