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* [gcc(refs/users/meissner/heads/work049)] Implement XXSPLTIDP support.
@ 2021-04-21 16:49 Michael Meissner
0 siblings, 0 replies; 2+ messages in thread
From: Michael Meissner @ 2021-04-21 16:49 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:15189f3371530d16303b86fc07e7800586b025ba
commit 15189f3371530d16303b86fc07e7800586b025ba
Author: Michael Meissner <meissner@linux.ibm.com>
Date: Wed Apr 21 12:49:36 2021 -0400
Implement XXSPLTIDP support.
This patch implements XXSPLTIDP support for SF and DF scalar constants and
V2DF vector constants.
A new constraint (eF) is added to match constants that can be loaded with
the XXSPLTIDP instruction.
I have moved the XXSPLTIDP built-in function support from altivec.md to
vsx.md because the functions can load any VSX register, not just the
ALTIVEC registers.
I have added a temporary switch (-mxxspltidp) to control whether or not the
XXSPLTIDP instruction is generated.
This patch provides a xxspltidp_constant_p function which decodes both
VEC_DUPLICATE and VECTOR_CONST insns (similar to the existing
xxspltib_constant_p function).
The xxspltidp_constant_p function returns the appropriate integer that will be
used in the XXSPLTIDP instruction. Note, because SFmode denormal values
are undefined in the hardware, the xxspltidp_constant_p function returns
false. Also xxspltidp_constant_p returns false for 0.0 because is cheaper
to implement without XXSPLTIDP.
gcc/
2021-04-21 Michael Meissner <meissner@linux.ibm.com>
* config/rs6000/altivec.md (UNSPEC_XXSPLTID): Move to vsx.md and
rename to UNSPEC_XXSPLTID.
(xxspltidp_v2df): Move to vsx.md and re-implement.
(xxspltidp_v2df_inst): Move to vsx.md and re-implement.
* config/rs6000/constraints.md (eF): New constraint.
* config/rs6000/predicates.md (easy_fp_constant): If we can load
the scalar constant with XXSPLTIDP, return true.
(xxspltidp_operand): New predicate.
(easy_vector_constant): If we can generate XXSPLTIDP, mark the
vector constant as easy.
* config/rs6000/rs6000-cpus.def (OTHER_POWER10_MASKS): Add
-mxxspltidp support.
(POWERPC_MASKS): Add -mxxspltidp support.
* config/rs6000/rs6000-protos.h (xxspltidp_constant_p): New
declaration.
* config/rs6000/rs6000.c (rs6000_option_override_internal): Add
-mxxspltidp support.
(xxspltidp_constant_p): New function.
(output_vec_const_move): Add support for XXSPLTIDP.
(rs6000_opt_masks): Add -mxxspltidp support.
(rs6000_emit_xxspltidp_v2df): Change function to implement the
XXSPLTIDP instruction.
* config/rs6000/rs6000.md (movsf_hardfloat): Add XXSPLTIDP
support.
(mov<mode>_hardfloat32, FMOVE64 iterator): Add XXSPLTIDP support.
(mov<mode>_hardfloat64, FMOVE64 iterator): Add XXSPLTIDP support.
* config/rs6000/rs6000.opt (-mxxspltidp): New switch.
* config/rs6000/vsx.md (UNSPEC_XXSPLTIDP): Move here from
altivec.md. Rename it to UNSPEC_XXSPLTIDP to match the
instruction.
(XXSPLTIDP): New mode iterator.
(xxspltidp_<mode>_internal1): New define_insn_and_split.
(xxspltidp_<mode>_internal2): New define_insn.
(xxspltidp_v2df): Move to vsx.md from altivec.md. Re-implement to
use the new constant format.
Diff:
---
gcc/config/rs6000/altivec.md | 21 ---------
gcc/config/rs6000/constraints.md | 5 +++
gcc/config/rs6000/predicates.md | 21 +++++++++
gcc/config/rs6000/rs6000-cpus.def | 2 +
gcc/config/rs6000/rs6000-protos.h | 1 +
gcc/config/rs6000/rs6000.c | 90 ++++++++++++++++++++++++++++++++++++---
gcc/config/rs6000/rs6000.md | 52 ++++++++++++++--------
gcc/config/rs6000/rs6000.opt | 6 ++-
gcc/config/rs6000/vsx.md | 42 ++++++++++++++++++
9 files changed, 193 insertions(+), 47 deletions(-)
diff --git a/gcc/config/rs6000/altivec.md b/gcc/config/rs6000/altivec.md
index 708296cb14d..ad6ead04cfa 100644
--- a/gcc/config/rs6000/altivec.md
+++ b/gcc/config/rs6000/altivec.md
@@ -176,7 +176,6 @@
UNSPEC_VSTRIL
UNSPEC_SLDB
UNSPEC_SRDB
- UNSPEC_XXSPLTID
UNSPEC_XXSPLTI32DX
UNSPEC_XXBLEND
UNSPEC_XXPERMX
@@ -819,26 +818,6 @@
"vs<SLDB_lr>dbi %0,%1,%2,%3"
[(set_attr "type" "vecsimple")])
-(define_expand "xxspltidp_v2df"
- [(set (match_operand:V2DF 0 "register_operand" )
- (unspec:V2DF [(match_operand:SF 1 "const_double_operand")]
- UNSPEC_XXSPLTID))]
- "TARGET_POWER10"
-{
- long value = rs6000_const_f32_to_i32 (operands[1]);
- rs6000_emit_xxspltidp_v2df (operands[0], value);
- DONE;
-})
-
-(define_insn "xxspltidp_v2df_inst"
- [(set (match_operand:V2DF 0 "register_operand" "=wa")
- (unspec:V2DF [(match_operand:SI 1 "c32bit_cint_operand" "n")]
- UNSPEC_XXSPLTID))]
- "TARGET_POWER10"
- "xxspltidp %x0,%1"
- [(set_attr "type" "vecsimple")
- (set_attr "prefixed" "yes")])
-
(define_expand "xxsplti32dx_v4si"
[(set (match_operand:V4SI 0 "register_operand" "=wa")
(unspec:V4SI [(match_operand:V4SI 1 "register_operand" "0")
diff --git a/gcc/config/rs6000/constraints.md b/gcc/config/rs6000/constraints.md
index 561ce9797af..e1fadd63580 100644
--- a/gcc/config/rs6000/constraints.md
+++ b/gcc/config/rs6000/constraints.md
@@ -208,6 +208,11 @@
(and (match_code "const_int")
(match_test "((- (unsigned HOST_WIDE_INT) ival) + 0x8000) < 0x10000")))
+;; SF/DF/V2DF scalar or vector constant that can be loaded with XXSPLTIDP
+(define_constraint "eF"
+ "A vector constant that can be loaded with the XXSPLTIDP instruction."
+ (match_operand 0 "xxspltidp_operand"))
+
;; 34-bit signed integer constant
(define_constraint "eI"
"A signed 34-bit integer constant if prefixed instructions are supported."
diff --git a/gcc/config/rs6000/predicates.md b/gcc/config/rs6000/predicates.md
index bf678f429af..8c461ba2b76 100644
--- a/gcc/config/rs6000/predicates.md
+++ b/gcc/config/rs6000/predicates.md
@@ -601,6 +601,11 @@
if (TARGET_VSX && op == CONST0_RTX (mode))
return 1;
+ /* If we have the ISA 3.1 XXSPLTIDP instruction, see if the constant can
+ be loaded with that instruction. */
+ if (xxspltidp_operand (op, mode))
+ return 1;
+
/* Otherwise consider floating point constants hard, so that the
constant gets pushed to memory during the early RTL phases. This
has the advantage that double precision constants that can be
@@ -666,6 +671,19 @@
return true;
})
+;; Return 1 if operand is a SF/DF CONST_DOUBLE or V2DF CONST_VECTOR that can be
+;; loaded via the ISA 3.1 XXSPLTIDP instruction. Do not return true if the
+;; value is 0.0, since that is easy to generate without using XXSPLTIDP.
+(define_predicate "xxspltidp_operand"
+ (match_code "const_double,const_vector,vec_duplicate")
+{
+ if (op == CONST0_RTX (mode))
+ return false;
+
+ HOST_WIDE_INT value = 0;
+ return xxspltidp_constant_p (op, mode, &value);
+})
+
;; Return 1 if the operand is a CONST_VECTOR and can be loaded into a
;; vector register without using memory.
(define_predicate "easy_vector_constant"
@@ -682,6 +700,9 @@
if (xxspltiw_operand (op, mode))
return true;
+ if (xxspltidp_operand (op, mode))
+ return true;
+
if (TARGET_P9_VECTOR
&& xxspltib_constant_p (op, mode, &num_insns, &value))
return true;
diff --git a/gcc/config/rs6000/rs6000-cpus.def b/gcc/config/rs6000/rs6000-cpus.def
index a21a95bc7aa..3b657e490b1 100644
--- a/gcc/config/rs6000/rs6000-cpus.def
+++ b/gcc/config/rs6000/rs6000-cpus.def
@@ -86,6 +86,7 @@
| OPTION_MASK_P10_FUSION \
| OPTION_MASK_P10_FUSION_LD_CMPI \
| OPTION_MASK_P10_FUSION_2LOGICAL \
+ | OPTION_MASK_XXSPLTIDP \
| OPTION_MASK_XXSPLTIW)
/* Flags that need to be turned off if -mno-power9-vector. */
@@ -162,6 +163,7 @@
| OPTION_MASK_SOFT_FLOAT \
| OPTION_MASK_STRICT_ALIGN_OPTIONAL \
| OPTION_MASK_VSX \
+ | OPTION_MASK_XXSPLTIDP \
| OPTION_MASK_XXSPLTIW)
#endif
diff --git a/gcc/config/rs6000/rs6000-protos.h b/gcc/config/rs6000/rs6000-protos.h
index 42c65029a14..e87a51f42de 100644
--- a/gcc/config/rs6000/rs6000-protos.h
+++ b/gcc/config/rs6000/rs6000-protos.h
@@ -32,6 +32,7 @@ extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, int, int, int,
extern bool easy_altivec_constant (rtx, machine_mode);
extern bool xxspltib_constant_p (rtx, machine_mode, int *, int *);
+extern bool xxspltidp_constant_p (rtx, machine_mode, HOST_WIDE_INT *);
extern int vspltis_shifted (rtx);
extern HOST_WIDE_INT const_vector_elt_as_int (rtx, unsigned int);
extern bool macho_lo_sum_memory_operand (rtx, machine_mode);
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 4fc735447ed..d32437474f7 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4479,11 +4479,16 @@ rs6000_option_override_internal (bool global_init_p)
if (!TARGET_PCREL && TARGET_PCREL_OPT)
rs6000_isa_flags &= ~OPTION_MASK_PCREL_OPT;
- if (TARGET_POWER10 && TARGET_VSX
- && (rs6000_isa_flags_explicit & OPTION_MASK_XXSPLTIW) == 0)
- rs6000_isa_flags |= OPTION_MASK_XXSPLTIW;
- else if (!TARGET_POWER10 || !TARGET_VSX)
- rs6000_isa_flags &= ~OPTION_MASK_XXSPLTIW;
+ if (TARGET_POWER10 && TARGET_VSX)
+ {
+ if ((rs6000_isa_flags_explicit & OPTION_MASK_XXSPLTIW) == 0)
+ rs6000_isa_flags |= OPTION_MASK_XXSPLTIW;
+
+ if ((rs6000_isa_flags_explicit & OPTION_MASK_XXSPLTIDP) == 0)
+ rs6000_isa_flags |= OPTION_MASK_XXSPLTIDP;
+ }
+ else
+ rs6000_isa_flags &= ~(OPTION_MASK_XXSPLTIW | OPTION_MASK_XXSPLTIDP);
if (TARGET_DEBUG_REG || TARGET_DEBUG_TARGET)
rs6000_print_isa_options (stderr, 0, "after subtarget", rs6000_isa_flags);
@@ -6475,6 +6480,75 @@ xxspltib_constant_p (rtx op,
return true;
}
+/* Return true if OP is of the given MODE and can be synthesized with ISA 3.1
+ XXSPLTIDP instruction.
+
+ Return the constant that is being split via CONSTANT_PTR to use in the
+ XXSPLTIDP instruction. */
+
+bool
+xxspltidp_constant_p (rtx op,
+ machine_mode mode,
+ HOST_WIDE_INT *constant_ptr)
+{
+ *constant_ptr = 0;
+
+ if (!TARGET_XXSPLTIDP)
+ return false;
+
+ if (mode == VOIDmode)
+ mode = GET_MODE (op);
+
+ rtx element = op;
+ if (mode == V2DFmode)
+ {
+ /* Handle VEC_DUPLICATE and CONST_VECTOR. */
+ if (GET_CODE (op) == VEC_DUPLICATE)
+ element = XEXP (op, 0);
+
+ else if (GET_CODE (op) == CONST_VECTOR)
+ {
+ element = CONST_VECTOR_ELT (op, 0);
+ if (!rtx_equal_p (element, CONST_VECTOR_ELT (op, 1)))
+ return false;
+ }
+
+ else
+ return false;
+
+ mode = DFmode;
+ }
+
+ if (mode != SFmode && mode != DFmode)
+ return false;
+
+ if (GET_MODE (element) != mode)
+ return false;
+
+ if (!CONST_DOUBLE_P (element))
+ return false;
+
+ /* Don't return true for 0.0 since that is easy to create without
+ XXSPLTIDP. */
+ if (element == CONST0_RTX (mode))
+ return false;
+
+ /* If the value doesn't fit in a SFmode, exactly, we can't use XXSPLTIDP. */
+ const struct real_value *rv = CONST_DOUBLE_REAL_VALUE (element);
+ if (!exact_real_truncate (SFmode, rv))
+ return 0;
+
+ long value;
+ REAL_VALUE_TO_TARGET_SINGLE (*rv, value);
+
+ /* Test for SFmode denormal (exponent is 0, mantissa field is non-zero). */
+ if (((value & 0x7F800000) == 0) && ((value & 0x7FFFFF) != 0))
+ return false;
+
+ *constant_ptr = value;
+ return true;
+}
+
const char *
output_vec_const_move (rtx *operands)
{
@@ -6519,7 +6593,8 @@ output_vec_const_move (rtx *operands)
gcc_unreachable ();
}
- if (xxspltiw_operand (vec, mode))
+ if (xxspltiw_operand (vec, mode)
+ || xxspltidp_operand (vec, mode))
return "#";
if (TARGET_P9_VECTOR
@@ -24050,6 +24125,7 @@ static struct rs6000_opt_mask const rs6000_opt_masks[] =
{ "update", OPTION_MASK_NO_UPDATE, true , true },
{ "vsx", OPTION_MASK_VSX, false, true },
{ "xxspltiw", OPTION_MASK_XXSPLTIW, false, true },
+ { "xxspltidp", OPTION_MASK_XXSPLTIDP, false, true },
#ifdef OPTION_MASK_64BIT
#if TARGET_AIX_OS
{ "aix64", OPTION_MASK_64BIT, false, false },
@@ -27875,7 +27951,7 @@ rs6000_emit_xxspltidp_v2df (rtx dst, long value)
inform (input_location,
"the result for the xxspltidp instruction "
"is undefined for subnormal input values");
- emit_insn( gen_xxspltidp_v2df_inst (dst, GEN_INT (value)));
+ emit_insn( gen_xxspltidp_v2df_internal2 (dst, GEN_INT (value)));
}
/* Implement TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC. */
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index c74fc8ce6fc..3d4dc820bdd 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -7612,17 +7612,17 @@
;;
;; LWZ LFS LXSSP LXSSPX STFS STXSSP
;; STXSSPX STW XXLXOR LI FMR XSCPSGNDP
-;; MR MT<x> MF<x> NOP
+;; MR MT<x> MF<x> NOP XXSPLTIDP
(define_insn "movsf_hardfloat"
[(set (match_operand:SF 0 "nonimmediate_operand"
"=!r, f, v, wa, m, wY,
Z, m, wa, !r, f, wa,
- !r, *c*l, !r, *h")
+ !r, *c*l, !r, *h, wa")
(match_operand:SF 1 "input_operand"
"m, m, wY, Z, f, v,
wa, r, j, j, f, wa,
- r, r, *h, 0"))]
+ r, r, *h, 0, eF"))]
"(register_operand (operands[0], SFmode)
|| register_operand (operands[1], SFmode))
&& TARGET_HARD_FLOAT
@@ -7644,15 +7644,20 @@
mr %0,%1
mt%0 %1
mf%1 %0
- nop"
+ nop
+ #"
[(set_attr "type"
"load, fpload, fpload, fpload, fpstore, fpstore,
fpstore, store, veclogical, integer, fpsimple, fpsimple,
- *, mtjmpr, mfjmpr, *")
+ *, mtjmpr, mfjmpr, *, vecperm")
(set_attr "isa"
"*, *, p9v, p8v, *, p9v,
p8v, *, *, *, *, *,
- *, *, *, *")])
+ *, *, *, *, p10")
+ (set_attr "prefixed"
+ "*, *, *, *, *, *,
+ *, *, *, *, *, *,
+ *, *, *, *, yes")])
;; LWZ LFIWZX STW STFIWX MTVSRWZ MFVSRWZ
;; FMR MR MT%0 MF%1 NOP
@@ -7912,18 +7917,18 @@
;; STFD LFD FMR LXSD STXSD
;; LXSD STXSD XXLOR XXLXOR GPR<-0
-;; LWZ STW MR
+;; LWZ STW MR XXSPLTIDP
(define_insn "*mov<mode>_hardfloat32"
[(set (match_operand:FMOVE64 0 "nonimmediate_operand"
"=m, d, d, <f64_p9>, wY,
<f64_av>, Z, <f64_vsx>, <f64_vsx>, !r,
- Y, r, !r")
+ Y, r, !r, wa")
(match_operand:FMOVE64 1 "input_operand"
"d, m, d, wY, <f64_p9>,
Z, <f64_av>, <f64_vsx>, <zero_fp>, <zero_fp>,
- r, Y, r"))]
+ r, Y, r, eF"))]
"! TARGET_POWERPC64 && TARGET_HARD_FLOAT
&& (gpc_reg_operand (operands[0], <MODE>mode)
|| gpc_reg_operand (operands[1], <MODE>mode))"
@@ -7940,20 +7945,25 @@
#
#
#
+ #
#"
[(set_attr "type"
"fpstore, fpload, fpsimple, fpload, fpstore,
fpload, fpstore, veclogical, veclogical, two,
- store, load, two")
+ store, load, two, vecperm")
(set_attr "size" "64")
(set_attr "length"
"*, *, *, *, *,
*, *, *, *, 8,
- 8, 8, 8")
+ 8, 8, 8, *")
(set_attr "isa"
"*, *, *, p9v, p9v,
p7v, p7v, *, *, *,
- *, *, *")])
+ *, *, *, p10")
+ (set_attr "prefixed"
+ "*, *, *, *, *,
+ *, *, *, *, *,
+ *, *, *, yes")])
;; STW LWZ MR G-const H-const F-const
@@ -7980,19 +7990,19 @@
;; STFD LFD FMR LXSD STXSD
;; LXSDX STXSDX XXLOR XXLXOR LI 0
;; STD LD MR MT{CTR,LR} MF{CTR,LR}
-;; NOP MFVSRD MTVSRD
+;; NOP MFVSRD MTVSRD XXSPLTIDP
(define_insn "*mov<mode>_hardfloat64"
[(set (match_operand:FMOVE64 0 "nonimmediate_operand"
"=m, d, d, <f64_p9>, wY,
<f64_av>, Z, <f64_vsx>, <f64_vsx>, !r,
YZ, r, !r, *c*l, !r,
- *h, r, <f64_dm>")
+ *h, r, <f64_dm>, wa")
(match_operand:FMOVE64 1 "input_operand"
"d, m, d, wY, <f64_p9>,
Z, <f64_av>, <f64_vsx>, <zero_fp>, <zero_fp>,
r, YZ, r, r, *h,
- 0, <f64_dm>, r"))]
+ 0, <f64_dm>, r, eF"))]
"TARGET_POWERPC64 && TARGET_HARD_FLOAT
&& (gpc_reg_operand (operands[0], <MODE>mode)
|| gpc_reg_operand (operands[1], <MODE>mode))"
@@ -8014,18 +8024,24 @@
mf%1 %0
nop
mfvsrd %0,%x1
- mtvsrd %x0,%1"
+ mtvsrd %x0,%1
+ #"
[(set_attr "type"
"fpstore, fpload, fpsimple, fpload, fpstore,
fpload, fpstore, veclogical, veclogical, integer,
store, load, *, mtjmpr, mfjmpr,
- *, mfvsr, mtvsr")
+ *, mfvsr, mtvsr, vecperm")
(set_attr "size" "64")
(set_attr "isa"
"*, *, *, p9v, p9v,
p7v, p7v, *, *, *,
*, *, *, *, *,
- *, p8v, p8v")])
+ *, p8v, p8v, p10")
+ (set_attr "prefixed"
+ "*, *, *, *, *,
+ *, *, *, *, *,
+ *, *, *, *, *,
+ *, *, *, yes")])
;; STD LD MR MT<SPR> MF<SPR> G-const
;; H-const F-const Special
diff --git a/gcc/config/rs6000/rs6000.opt b/gcc/config/rs6000/rs6000.opt
index b01ebd78c7f..6620cdb7716 100644
--- a/gcc/config/rs6000/rs6000.opt
+++ b/gcc/config/rs6000/rs6000.opt
@@ -622,4 +622,8 @@ Target Undocumented Var(rs6000_relative_jumptables) Init(1) Save
mxxspltiw
Target Undocumented Mask(XXSPLTIW) Var(rs6000_isa_flags)
-Generate (do not generate) XXSPLTIW instructions.
+Generate (do not generate) the XXSPLTIW instruction.
+
+mxxspltidp
+Target Undocumented Mask(XXSPLTIDP) Var(rs6000_isa_flags)
+Generate (do not generate) the XXSPLTIDP instruction.
diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md
index bb04f804a9e..be2bc9b1f30 100644
--- a/gcc/config/rs6000/vsx.md
+++ b/gcc/config/rs6000/vsx.md
@@ -369,6 +369,7 @@
UNSPEC_REPLACE_UN
UNSPEC_VDIVES
UNSPEC_VDIVEU
+ UNSPEC_XXSPLTIDP
])
(define_int_iterator XVCVBF16 [UNSPEC_VSX_XVCVSPBF16
@@ -6284,3 +6285,44 @@
operands[2] = CONST_VECTOR_ELT (operands[1], 0);
})
+;; XXSPLTIDP support.
+(define_mode_iterator XXSPLTIDP [SF DF V2DF])
+
+(define_insn_and_split "*xxspltidp_<mode>_internal1"
+ [(set (match_operand:XXSPLTIDP 0 "vsx_register_operand" "=wa")
+ (match_operand:XXSPLTIDP 1 "xxspltidp_operand"))]
+ "TARGET_XXSPLTIDP"
+ "#"
+ "&& 1"
+ [(set (match_operand:XXSPLTIDP 0 "vsx_register_operand")
+ (unspec:XXSPLTIDP [(match_dup 2)] UNSPEC_XXSPLTIDP))]
+{
+ HOST_WIDE_INT value = 0;
+
+ if (!xxspltidp_constant_p (operands[1], <MODE>mode, &value))
+ gcc_unreachable ();
+
+ operands[2] = GEN_INT (value);
+}
+ [(set_attr "type" "vecperm")
+ (set_attr "prefixed" "yes")])
+
+(define_insn "xxspltidp_<mode>_internal2"
+ [(set (match_operand:XXSPLTIDP 0 "vsx_register_operand" "=wa")
+ (unspec:XXSPLTIDP [(match_operand 1 "const_int_operand" "n")]
+ UNSPEC_XXSPLTIDP))]
+ "TARGET_XXSPLTIDP"
+ "xxspltidp %x0,%1"
+ [(set_attr "type" "vecperm")
+ (set_attr "prefixed" "yes")])
+
+;; XXSPLTIDP built-in function support.
+(define_expand "xxspltidp_v2df"
+ [(use (match_operand:V2DF 0 "register_operand" ))
+ (use (match_operand:SF 1 "const_double_operand"))]
+ "TARGET_POWER10"
+{
+ long value = rs6000_const_f32_to_i32 (operands[1]);
+ rs6000_emit_xxspltidp_v2df (operands[0], value);
+ DONE;
+})
^ permalink raw reply [flat|nested] 2+ messages in thread
* [gcc(refs/users/meissner/heads/work049)] Implement XXSPLTIDP support.
@ 2021-04-20 23:02 Michael Meissner
0 siblings, 0 replies; 2+ messages in thread
From: Michael Meissner @ 2021-04-20 23:02 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:e4e0d215f09eeb5a4136e14e03fda847bfaeef30
commit e4e0d215f09eeb5a4136e14e03fda847bfaeef30
Author: Michael Meissner <meissner@linux.ibm.com>
Date: Tue Apr 20 19:02:13 2021 -0400
Implement XXSPLTIDP support.
This patch implements XXSPLTIDP support for SF and DF scalar constants and
V2DF vector constants.
A new constraint (eF) is added to match constants that can be loaded with
the XXSPLTIDP instruction.
I have moved the XXSPLTIDP built-in function support from altivec.md to
vsx.md because the functions can load any VSX register, not just the
ALTIVEC registers.
I have added a temporary switch (-mxxspltidp) to control whether or not the
XXSPLTIDP instruction is generated.
This patch provides a xxspltidp_constant_p function which decodes both
VEC_DUPLICATE and VECTOR_CONST insns (similar to the existing
xxspltib_constant_p function).
The xxspltidp_constant_p function returns the appropriate integer that will be
used in the XXSPLTIDP instruction. Note, because SFmode denormal values
are undefined in the hardware, the xxspltidp_constant_p function returns
false. Also xxspltidp_constant_p returns false for 0.0 because is cheaper
to implement without XXSPLTIDP.
gcc/
2021-04-20 Michael Meissner <meissner@linux.ibm.com>
* config/rs6000/altivec.md (UNSPEC_XXSPLTID): Move to vsx.md and
rename to UNSPEC_XXSPLTID.
(xxspltidp_v2df): Move to vsx.md and re-implement.
(xxspltidp_v2df_inst): Move to vsx.md and re-implement.
* config/rs6000/constraints.md (eF): New constraint.
* config/rs6000/predicates.md (easy_fp_constant): If we can load
the scalar constant with XXSPLTIDP, return true.
(xxspltidp_operand): New predicate.
(easy_vector_constant): If we can generate XXSPLTIDP, mark the
vector constant as easy.
* config/rs6000/rs6000-cpus.def (OTHER_POWER10_MASKS): Add
-mxxspltidp support.
(POWERPC_MASKS): Add -mxxspltidp support.
* config/rs6000/rs6000-protos.h (xxspltidp_constant_p): New
declaration.
* config/rs6000/rs6000.c (rs6000_option_override_internal): Add
-mxxspltidp support.
(xxspltidp_constant_p): New function.
(output_vec_const_move): Add support for XXSPLTIDP.
(rs6000_opt_masks): Add -mxxspltidp support.
(rs6000_emit_xxspltidp_v2df): Change function to implement the
XXSPLTIDP instruction.
* config/rs6000/rs6000.md (movsf_hardfloat): Add XXSPLTIDP
support.
(mov<mode>_hardfloat32, FMOVE64 iterator): Add XXSPLTIDP support.
(mov<mode>_hardfloat64, FMOVE64 iterator): Add XXSPLTIDP support.
* config/rs6000/rs6000.opt (-mxxspltidp): New switch.
* config/rs6000/vsx.md (UNSPEC_XXSPLTIDP): Move here from
altivec.md. Rename it to UNSPEC_XXSPLTIDP to match the
instruction.
(XXSPLTIDP): New mode iterator.
(xxspltidp_<mode>_internal1): New define_insn_and_split.
(xxspltidp_<mode>_internal2): New define_insn.
(xxspltidp_v2df): Move to vsx.md from altivec.md. Re-implement to
use the new constant format.
Diff:
---
gcc/config/rs6000/altivec.md | 21 ---------
gcc/config/rs6000/constraints.md | 5 +++
gcc/config/rs6000/predicates.md | 21 +++++++++
gcc/config/rs6000/rs6000-cpus.def | 2 +
gcc/config/rs6000/rs6000-protos.h | 1 +
gcc/config/rs6000/rs6000.c | 90 ++++++++++++++++++++++++++++++++++++---
gcc/config/rs6000/rs6000.md | 52 ++++++++++++++--------
gcc/config/rs6000/rs6000.opt | 6 ++-
gcc/config/rs6000/vsx.md | 42 ++++++++++++++++++
9 files changed, 193 insertions(+), 47 deletions(-)
diff --git a/gcc/config/rs6000/altivec.md b/gcc/config/rs6000/altivec.md
index 708296cb14d..ad6ead04cfa 100644
--- a/gcc/config/rs6000/altivec.md
+++ b/gcc/config/rs6000/altivec.md
@@ -176,7 +176,6 @@
UNSPEC_VSTRIL
UNSPEC_SLDB
UNSPEC_SRDB
- UNSPEC_XXSPLTID
UNSPEC_XXSPLTI32DX
UNSPEC_XXBLEND
UNSPEC_XXPERMX
@@ -819,26 +818,6 @@
"vs<SLDB_lr>dbi %0,%1,%2,%3"
[(set_attr "type" "vecsimple")])
-(define_expand "xxspltidp_v2df"
- [(set (match_operand:V2DF 0 "register_operand" )
- (unspec:V2DF [(match_operand:SF 1 "const_double_operand")]
- UNSPEC_XXSPLTID))]
- "TARGET_POWER10"
-{
- long value = rs6000_const_f32_to_i32 (operands[1]);
- rs6000_emit_xxspltidp_v2df (operands[0], value);
- DONE;
-})
-
-(define_insn "xxspltidp_v2df_inst"
- [(set (match_operand:V2DF 0 "register_operand" "=wa")
- (unspec:V2DF [(match_operand:SI 1 "c32bit_cint_operand" "n")]
- UNSPEC_XXSPLTID))]
- "TARGET_POWER10"
- "xxspltidp %x0,%1"
- [(set_attr "type" "vecsimple")
- (set_attr "prefixed" "yes")])
-
(define_expand "xxsplti32dx_v4si"
[(set (match_operand:V4SI 0 "register_operand" "=wa")
(unspec:V4SI [(match_operand:V4SI 1 "register_operand" "0")
diff --git a/gcc/config/rs6000/constraints.md b/gcc/config/rs6000/constraints.md
index 561ce9797af..e1fadd63580 100644
--- a/gcc/config/rs6000/constraints.md
+++ b/gcc/config/rs6000/constraints.md
@@ -208,6 +208,11 @@
(and (match_code "const_int")
(match_test "((- (unsigned HOST_WIDE_INT) ival) + 0x8000) < 0x10000")))
+;; SF/DF/V2DF scalar or vector constant that can be loaded with XXSPLTIDP
+(define_constraint "eF"
+ "A vector constant that can be loaded with the XXSPLTIDP instruction."
+ (match_operand 0 "xxspltidp_operand"))
+
;; 34-bit signed integer constant
(define_constraint "eI"
"A signed 34-bit integer constant if prefixed instructions are supported."
diff --git a/gcc/config/rs6000/predicates.md b/gcc/config/rs6000/predicates.md
index bf678f429af..8c461ba2b76 100644
--- a/gcc/config/rs6000/predicates.md
+++ b/gcc/config/rs6000/predicates.md
@@ -601,6 +601,11 @@
if (TARGET_VSX && op == CONST0_RTX (mode))
return 1;
+ /* If we have the ISA 3.1 XXSPLTIDP instruction, see if the constant can
+ be loaded with that instruction. */
+ if (xxspltidp_operand (op, mode))
+ return 1;
+
/* Otherwise consider floating point constants hard, so that the
constant gets pushed to memory during the early RTL phases. This
has the advantage that double precision constants that can be
@@ -666,6 +671,19 @@
return true;
})
+;; Return 1 if operand is a SF/DF CONST_DOUBLE or V2DF CONST_VECTOR that can be
+;; loaded via the ISA 3.1 XXSPLTIDP instruction. Do not return true if the
+;; value is 0.0, since that is easy to generate without using XXSPLTIDP.
+(define_predicate "xxspltidp_operand"
+ (match_code "const_double,const_vector,vec_duplicate")
+{
+ if (op == CONST0_RTX (mode))
+ return false;
+
+ HOST_WIDE_INT value = 0;
+ return xxspltidp_constant_p (op, mode, &value);
+})
+
;; Return 1 if the operand is a CONST_VECTOR and can be loaded into a
;; vector register without using memory.
(define_predicate "easy_vector_constant"
@@ -682,6 +700,9 @@
if (xxspltiw_operand (op, mode))
return true;
+ if (xxspltidp_operand (op, mode))
+ return true;
+
if (TARGET_P9_VECTOR
&& xxspltib_constant_p (op, mode, &num_insns, &value))
return true;
diff --git a/gcc/config/rs6000/rs6000-cpus.def b/gcc/config/rs6000/rs6000-cpus.def
index a21a95bc7aa..3b657e490b1 100644
--- a/gcc/config/rs6000/rs6000-cpus.def
+++ b/gcc/config/rs6000/rs6000-cpus.def
@@ -86,6 +86,7 @@
| OPTION_MASK_P10_FUSION \
| OPTION_MASK_P10_FUSION_LD_CMPI \
| OPTION_MASK_P10_FUSION_2LOGICAL \
+ | OPTION_MASK_XXSPLTIDP \
| OPTION_MASK_XXSPLTIW)
/* Flags that need to be turned off if -mno-power9-vector. */
@@ -162,6 +163,7 @@
| OPTION_MASK_SOFT_FLOAT \
| OPTION_MASK_STRICT_ALIGN_OPTIONAL \
| OPTION_MASK_VSX \
+ | OPTION_MASK_XXSPLTIDP \
| OPTION_MASK_XXSPLTIW)
#endif
diff --git a/gcc/config/rs6000/rs6000-protos.h b/gcc/config/rs6000/rs6000-protos.h
index 42c65029a14..e87a51f42de 100644
--- a/gcc/config/rs6000/rs6000-protos.h
+++ b/gcc/config/rs6000/rs6000-protos.h
@@ -32,6 +32,7 @@ extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, int, int, int,
extern bool easy_altivec_constant (rtx, machine_mode);
extern bool xxspltib_constant_p (rtx, machine_mode, int *, int *);
+extern bool xxspltidp_constant_p (rtx, machine_mode, HOST_WIDE_INT *);
extern int vspltis_shifted (rtx);
extern HOST_WIDE_INT const_vector_elt_as_int (rtx, unsigned int);
extern bool macho_lo_sum_memory_operand (rtx, machine_mode);
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 4fc735447ed..d32437474f7 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4479,11 +4479,16 @@ rs6000_option_override_internal (bool global_init_p)
if (!TARGET_PCREL && TARGET_PCREL_OPT)
rs6000_isa_flags &= ~OPTION_MASK_PCREL_OPT;
- if (TARGET_POWER10 && TARGET_VSX
- && (rs6000_isa_flags_explicit & OPTION_MASK_XXSPLTIW) == 0)
- rs6000_isa_flags |= OPTION_MASK_XXSPLTIW;
- else if (!TARGET_POWER10 || !TARGET_VSX)
- rs6000_isa_flags &= ~OPTION_MASK_XXSPLTIW;
+ if (TARGET_POWER10 && TARGET_VSX)
+ {
+ if ((rs6000_isa_flags_explicit & OPTION_MASK_XXSPLTIW) == 0)
+ rs6000_isa_flags |= OPTION_MASK_XXSPLTIW;
+
+ if ((rs6000_isa_flags_explicit & OPTION_MASK_XXSPLTIDP) == 0)
+ rs6000_isa_flags |= OPTION_MASK_XXSPLTIDP;
+ }
+ else
+ rs6000_isa_flags &= ~(OPTION_MASK_XXSPLTIW | OPTION_MASK_XXSPLTIDP);
if (TARGET_DEBUG_REG || TARGET_DEBUG_TARGET)
rs6000_print_isa_options (stderr, 0, "after subtarget", rs6000_isa_flags);
@@ -6475,6 +6480,75 @@ xxspltib_constant_p (rtx op,
return true;
}
+/* Return true if OP is of the given MODE and can be synthesized with ISA 3.1
+ XXSPLTIDP instruction.
+
+ Return the constant that is being split via CONSTANT_PTR to use in the
+ XXSPLTIDP instruction. */
+
+bool
+xxspltidp_constant_p (rtx op,
+ machine_mode mode,
+ HOST_WIDE_INT *constant_ptr)
+{
+ *constant_ptr = 0;
+
+ if (!TARGET_XXSPLTIDP)
+ return false;
+
+ if (mode == VOIDmode)
+ mode = GET_MODE (op);
+
+ rtx element = op;
+ if (mode == V2DFmode)
+ {
+ /* Handle VEC_DUPLICATE and CONST_VECTOR. */
+ if (GET_CODE (op) == VEC_DUPLICATE)
+ element = XEXP (op, 0);
+
+ else if (GET_CODE (op) == CONST_VECTOR)
+ {
+ element = CONST_VECTOR_ELT (op, 0);
+ if (!rtx_equal_p (element, CONST_VECTOR_ELT (op, 1)))
+ return false;
+ }
+
+ else
+ return false;
+
+ mode = DFmode;
+ }
+
+ if (mode != SFmode && mode != DFmode)
+ return false;
+
+ if (GET_MODE (element) != mode)
+ return false;
+
+ if (!CONST_DOUBLE_P (element))
+ return false;
+
+ /* Don't return true for 0.0 since that is easy to create without
+ XXSPLTIDP. */
+ if (element == CONST0_RTX (mode))
+ return false;
+
+ /* If the value doesn't fit in a SFmode, exactly, we can't use XXSPLTIDP. */
+ const struct real_value *rv = CONST_DOUBLE_REAL_VALUE (element);
+ if (!exact_real_truncate (SFmode, rv))
+ return 0;
+
+ long value;
+ REAL_VALUE_TO_TARGET_SINGLE (*rv, value);
+
+ /* Test for SFmode denormal (exponent is 0, mantissa field is non-zero). */
+ if (((value & 0x7F800000) == 0) && ((value & 0x7FFFFF) != 0))
+ return false;
+
+ *constant_ptr = value;
+ return true;
+}
+
const char *
output_vec_const_move (rtx *operands)
{
@@ -6519,7 +6593,8 @@ output_vec_const_move (rtx *operands)
gcc_unreachable ();
}
- if (xxspltiw_operand (vec, mode))
+ if (xxspltiw_operand (vec, mode)
+ || xxspltidp_operand (vec, mode))
return "#";
if (TARGET_P9_VECTOR
@@ -24050,6 +24125,7 @@ static struct rs6000_opt_mask const rs6000_opt_masks[] =
{ "update", OPTION_MASK_NO_UPDATE, true , true },
{ "vsx", OPTION_MASK_VSX, false, true },
{ "xxspltiw", OPTION_MASK_XXSPLTIW, false, true },
+ { "xxspltidp", OPTION_MASK_XXSPLTIDP, false, true },
#ifdef OPTION_MASK_64BIT
#if TARGET_AIX_OS
{ "aix64", OPTION_MASK_64BIT, false, false },
@@ -27875,7 +27951,7 @@ rs6000_emit_xxspltidp_v2df (rtx dst, long value)
inform (input_location,
"the result for the xxspltidp instruction "
"is undefined for subnormal input values");
- emit_insn( gen_xxspltidp_v2df_inst (dst, GEN_INT (value)));
+ emit_insn( gen_xxspltidp_v2df_internal2 (dst, GEN_INT (value)));
}
/* Implement TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC. */
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index c74fc8ce6fc..3d4dc820bdd 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -7612,17 +7612,17 @@
;;
;; LWZ LFS LXSSP LXSSPX STFS STXSSP
;; STXSSPX STW XXLXOR LI FMR XSCPSGNDP
-;; MR MT<x> MF<x> NOP
+;; MR MT<x> MF<x> NOP XXSPLTIDP
(define_insn "movsf_hardfloat"
[(set (match_operand:SF 0 "nonimmediate_operand"
"=!r, f, v, wa, m, wY,
Z, m, wa, !r, f, wa,
- !r, *c*l, !r, *h")
+ !r, *c*l, !r, *h, wa")
(match_operand:SF 1 "input_operand"
"m, m, wY, Z, f, v,
wa, r, j, j, f, wa,
- r, r, *h, 0"))]
+ r, r, *h, 0, eF"))]
"(register_operand (operands[0], SFmode)
|| register_operand (operands[1], SFmode))
&& TARGET_HARD_FLOAT
@@ -7644,15 +7644,20 @@
mr %0,%1
mt%0 %1
mf%1 %0
- nop"
+ nop
+ #"
[(set_attr "type"
"load, fpload, fpload, fpload, fpstore, fpstore,
fpstore, store, veclogical, integer, fpsimple, fpsimple,
- *, mtjmpr, mfjmpr, *")
+ *, mtjmpr, mfjmpr, *, vecperm")
(set_attr "isa"
"*, *, p9v, p8v, *, p9v,
p8v, *, *, *, *, *,
- *, *, *, *")])
+ *, *, *, *, p10")
+ (set_attr "prefixed"
+ "*, *, *, *, *, *,
+ *, *, *, *, *, *,
+ *, *, *, *, yes")])
;; LWZ LFIWZX STW STFIWX MTVSRWZ MFVSRWZ
;; FMR MR MT%0 MF%1 NOP
@@ -7912,18 +7917,18 @@
;; STFD LFD FMR LXSD STXSD
;; LXSD STXSD XXLOR XXLXOR GPR<-0
-;; LWZ STW MR
+;; LWZ STW MR XXSPLTIDP
(define_insn "*mov<mode>_hardfloat32"
[(set (match_operand:FMOVE64 0 "nonimmediate_operand"
"=m, d, d, <f64_p9>, wY,
<f64_av>, Z, <f64_vsx>, <f64_vsx>, !r,
- Y, r, !r")
+ Y, r, !r, wa")
(match_operand:FMOVE64 1 "input_operand"
"d, m, d, wY, <f64_p9>,
Z, <f64_av>, <f64_vsx>, <zero_fp>, <zero_fp>,
- r, Y, r"))]
+ r, Y, r, eF"))]
"! TARGET_POWERPC64 && TARGET_HARD_FLOAT
&& (gpc_reg_operand (operands[0], <MODE>mode)
|| gpc_reg_operand (operands[1], <MODE>mode))"
@@ -7940,20 +7945,25 @@
#
#
#
+ #
#"
[(set_attr "type"
"fpstore, fpload, fpsimple, fpload, fpstore,
fpload, fpstore, veclogical, veclogical, two,
- store, load, two")
+ store, load, two, vecperm")
(set_attr "size" "64")
(set_attr "length"
"*, *, *, *, *,
*, *, *, *, 8,
- 8, 8, 8")
+ 8, 8, 8, *")
(set_attr "isa"
"*, *, *, p9v, p9v,
p7v, p7v, *, *, *,
- *, *, *")])
+ *, *, *, p10")
+ (set_attr "prefixed"
+ "*, *, *, *, *,
+ *, *, *, *, *,
+ *, *, *, yes")])
;; STW LWZ MR G-const H-const F-const
@@ -7980,19 +7990,19 @@
;; STFD LFD FMR LXSD STXSD
;; LXSDX STXSDX XXLOR XXLXOR LI 0
;; STD LD MR MT{CTR,LR} MF{CTR,LR}
-;; NOP MFVSRD MTVSRD
+;; NOP MFVSRD MTVSRD XXSPLTIDP
(define_insn "*mov<mode>_hardfloat64"
[(set (match_operand:FMOVE64 0 "nonimmediate_operand"
"=m, d, d, <f64_p9>, wY,
<f64_av>, Z, <f64_vsx>, <f64_vsx>, !r,
YZ, r, !r, *c*l, !r,
- *h, r, <f64_dm>")
+ *h, r, <f64_dm>, wa")
(match_operand:FMOVE64 1 "input_operand"
"d, m, d, wY, <f64_p9>,
Z, <f64_av>, <f64_vsx>, <zero_fp>, <zero_fp>,
r, YZ, r, r, *h,
- 0, <f64_dm>, r"))]
+ 0, <f64_dm>, r, eF"))]
"TARGET_POWERPC64 && TARGET_HARD_FLOAT
&& (gpc_reg_operand (operands[0], <MODE>mode)
|| gpc_reg_operand (operands[1], <MODE>mode))"
@@ -8014,18 +8024,24 @@
mf%1 %0
nop
mfvsrd %0,%x1
- mtvsrd %x0,%1"
+ mtvsrd %x0,%1
+ #"
[(set_attr "type"
"fpstore, fpload, fpsimple, fpload, fpstore,
fpload, fpstore, veclogical, veclogical, integer,
store, load, *, mtjmpr, mfjmpr,
- *, mfvsr, mtvsr")
+ *, mfvsr, mtvsr, vecperm")
(set_attr "size" "64")
(set_attr "isa"
"*, *, *, p9v, p9v,
p7v, p7v, *, *, *,
*, *, *, *, *,
- *, p8v, p8v")])
+ *, p8v, p8v, p10")
+ (set_attr "prefixed"
+ "*, *, *, *, *,
+ *, *, *, *, *,
+ *, *, *, *, *,
+ *, *, *, yes")])
;; STD LD MR MT<SPR> MF<SPR> G-const
;; H-const F-const Special
diff --git a/gcc/config/rs6000/rs6000.opt b/gcc/config/rs6000/rs6000.opt
index b01ebd78c7f..6620cdb7716 100644
--- a/gcc/config/rs6000/rs6000.opt
+++ b/gcc/config/rs6000/rs6000.opt
@@ -622,4 +622,8 @@ Target Undocumented Var(rs6000_relative_jumptables) Init(1) Save
mxxspltiw
Target Undocumented Mask(XXSPLTIW) Var(rs6000_isa_flags)
-Generate (do not generate) XXSPLTIW instructions.
+Generate (do not generate) the XXSPLTIW instruction.
+
+mxxspltidp
+Target Undocumented Mask(XXSPLTIDP) Var(rs6000_isa_flags)
+Generate (do not generate) the XXSPLTIDP instruction.
diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md
index 9bad4da1e34..f2dfef88c90 100644
--- a/gcc/config/rs6000/vsx.md
+++ b/gcc/config/rs6000/vsx.md
@@ -369,6 +369,7 @@
UNSPEC_REPLACE_UN
UNSPEC_VDIVES
UNSPEC_VDIVEU
+ UNSPEC_XXSPLTIDP
])
(define_int_iterator XVCVBF16 [UNSPEC_VSX_XVCVSPBF16
@@ -6284,3 +6285,44 @@
operands[2] = CONST_VECTOR_ELT (operands[1], 0);
})
+;; XXSPLTIDP support.
+(define_mode_iterator XXSPLTIDP [SF DF V2DF])
+
+(define_insn_and_split "*xxspltidp_<mode>_internal1"
+ [(set (match_operand:XXSPLTIDP 0 "vsx_register_operand" "=wa")
+ (match_operand:XXSPLTIDP 1 "xxspltidp_operand"))]
+ "TARGET_XXSPLTIDP"
+ "#"
+ "&& 1"
+ [(set (match_operand:XXSPLTIDP 0 "vsx_register_operand")
+ (unspec:XXSPLTIDP [(match_dup 2)] UNSPEC_XXSPLTIDP))]
+{
+ HOST_WIDE_INT value = 0;
+
+ if (!xxspltidp_constant_p (operands[1], <MODE>mode, &value))
+ gcc_unreachable ();
+
+ operands[2] = GEN_INT (value);
+}
+ [(set_attr "type" "vecperm")
+ (set_attr "prefixed" "yes")])
+
+(define_insn "xxspltidp_<mode>_internal2"
+ [(set (match_operand:XXSPLTIDP 0 "vsx_register_operand" "=wa")
+ (unspec:XXSPLTIDP [(match_operand 1 "const_int_operand" "n")]
+ UNSPEC_XXSPLTIDP))]
+ "TARGET_XXSPLTIDP"
+ "xxspltidp %x0,%1"
+ [(set_attr "type" "vecperm")
+ (set_attr "prefixed" "yes")])
+
+;; XXSPLTIDP built-in function support.
+(define_expand "xxspltidp_v2df"
+ [(use (match_operand:V2DF 0 "register_operand" ))
+ (use (match_operand:SF 1 "const_double_operand"))]
+ "TARGET_POWER10"
+{
+ long value = rs6000_const_f32_to_i32 (operands[1]);
+ rs6000_emit_xxspltidp_v2df (operands[0], value);
+ DONE;
+})
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