https://gcc.gnu.org/g:30a040f6304e4c1b43ca30a954b52ab195d79aa6
commit 30a040f6304e4c1b43ca30a954b52ab195d79aa6
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Thu Sep 12 15:49:19 2024 -0400
Change TARGET_POPCNTD to TARGET_POWER7
As part of the architecture flags patches, this patch changes the use of
TARGET_POPCNTD to TARGET_POWER7. The POPCNTD instruction was added in
power7
(ISA 2.06).
I have built both big endian and little endian bootstrap compilers and there
were no regressions.
In addition, I constructed a test case that used every archiecture define
(like
_ARCH_PWR4, etc.) and I also looked at the .machine directive generated. I
ran
this test for all supported combinations of -mcpu, big/little endian, and
32/64
bit support. Every single instance generated exactly the same code with the
patches installed compared to the compiler before installing the patches.
Can I install this patch on the GCC 15 trunk?
2024-09-12 Michael Meissner <meiss...@linux.ibm.com>
* config/rs6000/dfp.md (floatdidd2): Change TARGET_POPCNTD to
TARGET_POWER7.
* config/rs6000/rs6000-builtin.cc (rs6000_builtin_is_supported):
Likewise.
* config/rs6000/rs6000-string.cc (expand_block_compare_gpr):
Likewise.
* config/rs6000/rs6000.cc (rs6000_hard_regno_mode_ok_uncached):
Likewise.
(rs6000_rtx_costs): Likewise.
(rs6000_emit_popcount): Likewise.
* config/rs6000/rs6000.h (TARGET_LDBRX): Likewise.
(TARGET_LFIWZX): Likewise.
(TARGET_FCFIDS): Likewise.
(TARGET_FCFIDU): Likewise.
(TARGET_FCFIDUS): Likewise.
(TARGET_FCTIDUZ): Likewise.
(TARGET_FCTIWUZ): Likewise.
(CTZ_DEFINED_VALUE_AT_ZERO): Likewise.
* config/rs6000/rs6000.md (enabled attribute): Likewise.
(ctz<mode>2): Likewise.
(popcntd<mode>2): Likewise.
(lrint<mode>si2): Likewise.
(lrint<mode>si): Likewise.
(lrint<mode>si_di): Likewise.
(cmpmemsi): Likewise.
(bpermd_<mode>"): Likewise.
(addg6s): Likewise.
(cdtbcd): Likewise.
(cbcdtd): Likewise.
(div<div_extend>_<mode>): Likewise.
Diff:
---
gcc/config/rs6000/dfp.md | 2 +-
gcc/config/rs6000/rs6000-builtin.cc | 4 ++--
gcc/config/rs6000/rs6000-string.cc | 4 ++--
gcc/config/rs6000/rs6000.cc | 6 +++---
gcc/config/rs6000/rs6000.h | 16 ++++++++--------
gcc/config/rs6000/rs6000.md | 24 ++++++++++++------------
6 files changed, 28 insertions(+), 28 deletions(-)
diff --git a/gcc/config/rs6000/dfp.md b/gcc/config/rs6000/dfp.md
index fa9d7dd45dd3..b8189390d410 100644
--- a/gcc/config/rs6000/dfp.md
+++ b/gcc/config/rs6000/dfp.md
@@ -214,7 +214,7 @@
(define_insn "floatdidd2"
[(set (match_operand:DD 0 "gpc_reg_operand" "=d")
(float:DD (match_operand:DI 1 "gpc_reg_operand" "d")))]
- "TARGET_DFP && TARGET_POPCNTD"
+ "TARGET_DFP && TARGET_POWER7"
"dcffix %0,%1"
[(set_attr "type" "dfp")])
diff --git a/gcc/config/rs6000/rs6000-builtin.cc
b/gcc/config/rs6000/rs6000-builtin.cc
index 76421bd1de0b..dae43b672ea7 100644
--- a/gcc/config/rs6000/rs6000-builtin.cc
+++ b/gcc/config/rs6000/rs6000-builtin.cc
@@ -161,9 +161,9 @@ rs6000_builtin_is_supported (enum rs6000_gen_builtins
fncode)
case ENB_P6_64:
return TARGET_POWER6 && TARGET_POWERPC64;
case ENB_P7:
- return TARGET_POPCNTD;
+ return TARGET_POWER7;
case ENB_P7_64:
- return TARGET_POPCNTD && TARGET_POWERPC64;
+ return TARGET_POWER7 && TARGET_POWERPC64;
case ENB_P8:
return TARGET_POWER8;
case ENB_P8V:
diff --git a/gcc/config/rs6000/rs6000-string.cc
b/gcc/config/rs6000/rs6000-string.cc
index 55b4133b1a34..3674c4bd9847 100644
--- a/gcc/config/rs6000/rs6000-string.cc
+++ b/gcc/config/rs6000/rs6000-string.cc
@@ -1948,8 +1948,8 @@ expand_block_compare_gpr(unsigned HOST_WIDE_INT bytes,
unsigned int base_align,
bool
expand_block_compare (rtx operands[])
{
- /* TARGET_POPCNTD is already guarded at expand cmpmemsi. */
- gcc_assert (TARGET_POPCNTD);
+ /* TARGET_POWER7 is already guarded at expand cmpmemsi. */
+ gcc_assert (TARGET_POWER7);
/* For P8, this case is complicated to handle because the subtract
with carry instructions do not generate the 64-bit carry and so
diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
index dd51d75c4957..7d20e757c7c4 100644
--- a/gcc/config/rs6000/rs6000.cc
+++ b/gcc/config/rs6000/rs6000.cc
@@ -1999,7 +1999,7 @@ rs6000_hard_regno_mode_ok_uncached (int regno,
machine_mode mode)
if(GET_MODE_SIZE (mode) == UNITS_PER_FP_WORD)
return 1;
- if (TARGET_POPCNTD && mode == SImode)
+ if (TARGET_POWER7 && mode == SImode)
return 1;
if (TARGET_P9_VECTOR && (mode == QImode || mode == HImode))
@@ -22473,7 +22473,7 @@ rs6000_rtx_costs (rtx x, machine_mode mode, int
outer_code,
return false;
case POPCOUNT:
- *total = COSTS_N_INSNS (TARGET_POPCNTD ? 1 : 6);
+ *total = COSTS_N_INSNS (TARGET_POWER7 ? 1 : 6);
return false;
case PARITY:
@@ -23260,7 +23260,7 @@ rs6000_emit_popcount (rtx dst, rtx src)
rtx tmp1, tmp2;
/* Use the PPC ISA 2.06 popcnt{w,d} instruction if we can. */
- if (TARGET_POPCNTD)
+ if (TARGET_POWER7)
{
if (mode == SImode)
emit_insn (gen_popcntdsi2 (dst, src));
diff --git a/gcc/config/rs6000/rs6000.h b/gcc/config/rs6000/rs6000.h
index d22693eb2bfb..3a03c32f2222 100644
--- a/gcc/config/rs6000/rs6000.h
+++ b/gcc/config/rs6000/rs6000.h
@@ -442,7 +442,7 @@ extern int rs6000_vector_align[];
#define TARGET_LONG_DOUBLE_128 (rs6000_long_double_type_size > 64)
#define TARGET_IEEEQUAD rs6000_ieeequad
#define TARGET_ALTIVEC_ABI rs6000_altivec_abi
-#define TARGET_LDBRX (TARGET_POPCNTD || rs6000_cpu == PROCESSOR_CELL)
+#define TARGET_LDBRX (TARGET_POWER7 || rs6000_cpu == PROCESSOR_CELL)
/* ISA 2.01 allowed FCFID to be done in 32-bit, previously it was 64-bit only.
Enable 32-bit fcfid's on any of the switches for newer ISA machines. */
@@ -453,12 +453,12 @@ extern int rs6000_vector_align[];
#define TARGET_FCTIDZ TARGET_FCFID
#define TARGET_STFIWX TARGET_PPC_GFXOPT
#define TARGET_LFIWAX TARGET_POWER6
-#define TARGET_LFIWZX TARGET_POPCNTD
-#define TARGET_FCFIDS TARGET_POPCNTD
-#define TARGET_FCFIDU TARGET_POPCNTD
-#define TARGET_FCFIDUS TARGET_POPCNTD
-#define TARGET_FCTIDUZ TARGET_POPCNTD
-#define TARGET_FCTIWUZ TARGET_POPCNTD
+#define TARGET_LFIWZX TARGET_POWER7
+#define TARGET_FCFIDS TARGET_POWER7
+#define TARGET_FCFIDU TARGET_POWER7
+#define TARGET_FCFIDUS TARGET_POWER7
+#define TARGET_FCTIDUZ TARGET_POWER7
+#define TARGET_FCTIWUZ TARGET_POWER7
/* Only powerpc64 and powerpc476 support fctid. */
#define TARGET_FCTID (TARGET_POWERPC64 || rs6000_cpu == PROCESSOR_PPC476)
#define TARGET_CTZ TARGET_MODULO
@@ -1754,7 +1754,7 @@ typedef struct rs6000_args
zero. The hardware instructions added in Power9 and the sequences using
popcount return 32 or 64. */
#define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \
- (TARGET_CTZ || TARGET_POPCNTD
\
+ (TARGET_CTZ || TARGET_POWER7 \
? ((VALUE) = GET_MODE_BITSIZE (MODE), 2) \
: ((VALUE) = -1, 2))
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 0c303087e944..bff898a4eff1 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -387,7 +387,7 @@
(const_int 1)
(and (eq_attr "isa" "p7")
- (match_test "TARGET_POPCNTD"))
+ (match_test "TARGET_POWER7"))
(const_int 1)
(and (eq_attr "isa" "p7v")
@@ -2466,7 +2466,7 @@
rtx tmp2 = gen_reg_rtx (<MODE>mode);
rtx tmp3 = gen_reg_rtx (<MODE>mode);
- if (TARGET_POPCNTD)
+ if (TARGET_POWER7)
{
emit_insn (gen_add<mode>3 (tmp1, operands[1], constm1_rtx));
emit_insn (gen_one_cmpl<mode>2 (tmp2, operands[1]));
@@ -2527,7 +2527,7 @@
(define_insn "popcntd<mode>2"
[(set (match_operand:GPR 0 "gpc_reg_operand" "=r")
(popcount:GPR (match_operand:GPR 1 "gpc_reg_operand" "r")))]
- "TARGET_POPCNTD"
+ "TARGET_POWER7"
"popcnt<wd> %0,%1"
[(set_attr "type" "popcnt")])
@@ -6784,7 +6784,7 @@
/* For those old archs in which SImode can't be hold in float registers,
call lrint<mode>si_di to put the result in DImode then convert it via
stack. */
- if (!TARGET_POPCNTD)
+ if (!TARGET_POWER7)
{
rtx tmp = gen_reg_rtx (DImode);
emit_insn (gen_lrint<mode>si_di (tmp, operands[1]));
@@ -6799,7 +6799,7 @@
[(set (match_operand:SI 0 "gpc_reg_operand" "=d")
(unspec:SI [(match_operand:SFDF 1 "gpc_reg_operand" "<rreg2>")]
UNSPEC_FCTIW))]
- "TARGET_HARD_FLOAT && TARGET_POPCNTD"
+ "TARGET_HARD_FLOAT && TARGET_POWER7"
"fctiw %0,%1"
[(set_attr "type" "fp")])
@@ -6807,7 +6807,7 @@
[(set (match_operand:DI 0 "gpc_reg_operand" "=d")
(unspec:DI [(match_operand:SFDF 1 "gpc_reg_operand" "<rreg2>")]
UNSPEC_FCTIW))]
- "TARGET_HARD_FLOAT && !TARGET_POPCNTD"
+ "TARGET_HARD_FLOAT && !TARGET_POWER7"
"fctiw %0,%1"
[(set_attr "type" "fp")])
@@ -10168,7 +10168,7 @@
(match_operand:BLK 2)))
(use (match_operand:SI 3))
(use (match_operand:SI 4))])]
- "TARGET_POPCNTD"
+ "TARGET_POWER7"
{
if (optimize_insn_for_size_p ())
FAIL;
@@ -14435,7 +14435,7 @@
[(set (match_operand:P 0 "gpc_reg_operand" "=r")
(unspec:P [(match_operand:P 1 "gpc_reg_operand" "r")
(match_operand:P 2 "gpc_reg_operand" "r")] UNSPEC_BPERM))]
- "TARGET_POPCNTD"
+ "TARGET_POWER7"
"bpermd %0,%1,%2"
[(set_attr "type" "popcnt")])
@@ -14813,7 +14813,7 @@
(unspec:SI [(match_operand:SI 1 "register_operand" "r")
(match_operand:SI 2 "register_operand" "r")]
UNSPEC_ADDG6S))]
- "TARGET_POPCNTD"
+ "TARGET_POWER7"
"addg6s %0,%1,%2"
[(set_attr "type" "integer")])
@@ -14821,7 +14821,7 @@
[(set (match_operand:SI 0 "register_operand" "=r")
(unspec:SI [(match_operand:SI 1 "register_operand" "r")]
UNSPEC_CDTBCD))]
- "TARGET_POPCNTD"
+ "TARGET_POWER7"
"cdtbcd %0,%1"
[(set_attr "type" "integer")])
@@ -14829,7 +14829,7 @@
[(set (match_operand:SI 0 "register_operand" "=r")
(unspec:SI [(match_operand:SI 1 "register_operand" "r")]
UNSPEC_CBCDTD))]
- "TARGET_POPCNTD"
+ "TARGET_POWER7"
"cbcdtd %0,%1"
[(set_attr "type" "integer")])
@@ -14844,7 +14844,7 @@
(unspec:GPR [(match_operand:GPR 1 "register_operand" "r")
(match_operand:GPR 2 "register_operand" "r")]
UNSPEC_DIV_EXTEND))]
- "TARGET_POPCNTD"
+ "TARGET_POWER7"
"div<wd><div_extend> %0,%1,%2"
[(set_attr "type" "div")
(set_attr "size" "<bits>")])
