From: Xionghu Luo <yinyuefengyi@gmail.com>
To: "Kewen.Lin" <linkw@linux.ibm.com>
Cc: Xionghu Luo <xionghuluo@tencent.com>,
gcc-patches@gcc.gnu.org, David Edelsohn <dje.gcc@gmail.com>,
Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [PATCH v4] rs6000: Fix incorrect RTL for Power LE when removing the UNSPECS [PR106069]
Date: Wed, 17 Aug 2022 14:23:44 +0800 [thread overview]
Message-ID: <37b57a54-f98e-96a3-edff-866c8aae4c7d@gmail.com> (raw)
In-Reply-To: <5df1a7fc-dacf-72e2-041d-66624926091f@linux.ibm.com>
On 2022/8/16 14:53, Kewen.Lin wrote:
> Hi Xionghu,
>
> Thanks for the updated version of patch, some comments are inlined.
>
> on 2022/8/11 14:15, Xionghu Luo wrote:
>>
>>
>> On 2022/8/11 01:07, Segher Boessenkool wrote:
>>> On Wed, Aug 10, 2022 at 02:39:02PM +0800, Xionghu Luo wrote:
>>>> On 2022/8/9 11:01, Kewen.Lin wrote:
>>>>> I have some concern on those changed "altivec_*_direct", IMHO the suffix
>>>>> "_direct" is normally to indicate the define_insn is mapped to the
>>>>> corresponding hw insn directly. With this change, for example,
>>>>> altivec_vmrghb_direct can be mapped into vmrghb or vmrglb, this looks
>>>>> misleading. Maybe we can add the corresponding _direct_le and _direct_be
>>>>> versions, both are mapped into the same insn but have different RTL
>>>>> patterns. Looking forward to Segher's and David's suggestions.
>>>>
>>>> Thanks! Do you mean same RTL patterns with different hw insn?
>>>
>>> A pattern called altivec_vmrghb_direct_le should always emit a vmrghb
>>> instruction, never a vmrglb instead. Misleading names are an expensive
>>> problem.
>>>
>>>
>>
>> Thanks. Then on LE platforms, if user calls altivec_vmrghw，it will be
>> expanded to RTL (vec_select (vec_concat (R0 R1 (0 4 1 5))), and
>> finally matched to altivec_vmrglw_direct_v4si_le with ASM "vmrglw".
>> For BE just strict forward, seems more clear :-), OK for master?
>>
>>
>> [PATCH v3] rs6000: Fix incorrect RTL for Power LE when removing the UNSPECS [PR106069]
>>
>> v3: rename altivec_vmrghb_direct_le to altivec_vmrglb_direct_le to match
>> the actual output ASM vmrglb. Likewise for all similar xxx_direct_le
>> patterns.
>> v2: Split the direct pattern to be and le with same RTL but different insn.
>>
>> The native RTL expression for vec_mrghw should be same for BE and LE as
>> they are register and endian-independent. So both BE and LE need
>> generate exactly same RTL with index [0 4 1 5] when expanding vec_mrghw
>> with vec_select and vec_concat.
>>
>> (set (reg:V4SI 141) (vec_select:V4SI (vec_concat:V8SI
>> (subreg:V4SI (reg:V16QI 139) 0)
>> (subreg:V4SI (reg:V16QI 140) 0))
>> [const_int 0 4 1 5]))
>>
>> Then combine pass could do the nested vec_select optimization
>> in simplify-rtx.c:simplify_binary_operation_1 also on both BE and LE:
>>
>> 21: r150:V4SI=vec_select(vec_concat(r141:V4SI,r146:V4SI),parallel [0 4 1 5])
>> 24: {r151:SI=vec_select(r150:V4SI,parallel [const_int 3]);}
>>
>> =>
>>
>> 21: r150:V4SI=vec_select(vec_concat(r141:V4SI,r146:V4SI),parallel)
>> 24: {r151:SI=vec_select(r146:V4SI,parallel [const_int 1]);}
>>
>> The endianness check need only once at ASM generation finally.
>> ASM would be better due to nested vec_select simplified to simple scalar
>> load.
>>
>> Regression tested pass for Power8{LE,BE}{32,64} and Power{9,10}LE{64}
>> Linux(Thanks to Kewen).
>>
>> gcc/ChangeLog:
>>
>> PR target/106069
>> * config/rs6000/altivec.md (altivec_vmrghb_direct): Remove.
>> (altivec_vmrghb_direct_be): New pattern for BE.
>> (altivec_vmrglb_direct_le): New pattern for LE.
>> (altivec_vmrghh_direct): Remove.
>> (altivec_vmrghh_direct_be): New pattern for BE.
>> (altivec_vmrglh_direct_le): New pattern for LE.
>> (altivec_vmrghw_direct_<mode>): Remove.
>> (altivec_vmrghw_direct_<mode>_be): New pattern for BE.
>> (altivec_vmrglw_direct_<mode>_le): New pattern for LE.
>> (altivec_vmrglb_direct): Remove.
>> (altivec_vmrglb_direct_be): New pattern for BE.
>> (altivec_vmrghb_direct_le): New pattern for LE.
>> (altivec_vmrglh_direct): Remove.
>> (altivec_vmrglh_direct_be): New pattern for BE.
>> (altivec_vmrghh_direct_le): New pattern for LE.
>> (altivec_vmrglw_direct_<mode>): Remove.
>> (altivec_vmrglw_direct_<mode>_be): New pattern for BE.
>> (altivec_vmrghw_direct_<mode>_le): New pattern for LE.
>> * config/rs6000/rs6000.cc (altivec_expand_vec_perm_const):
>> Adjust.
>> * config/rs6000/vsx.md: Likewise.
>>
>> gcc/testsuite/ChangeLog:
>>
>> PR target/106069
>> * g++.target/powerpc/pr106069.C: New test.
>>
>> Signed-off-by: Xionghu Luo <xionghuluo@tencent.com>
>> ---
>> gcc/config/rs6000/altivec.md | 223 ++++++++++++++------
>> gcc/config/rs6000/rs6000.cc | 36 ++--
>> gcc/config/rs6000/vsx.md | 24 +--
>> gcc/testsuite/g++.target/powerpc/pr106069.C | 120 +++++++++++
>> 4 files changed, 305 insertions(+), 98 deletions(-)
>> create mode 100644 gcc/testsuite/g++.target/powerpc/pr106069.C
>>
>> diff --git a/gcc/config/rs6000/altivec.md b/gcc/config/rs6000/altivec.md
>> index 2c4940f2e21..78245f470e9 100644
>> --- a/gcc/config/rs6000/altivec.md
>> +++ b/gcc/config/rs6000/altivec.md
>> @@ -1144,15 +1144,17 @@ (define_expand "altivec_vmrghb"
>> (use (match_operand:V16QI 2 "register_operand"))]
>> "TARGET_ALTIVEC"
>> {
>> - rtx (*fun) (rtx, rtx, rtx) = BYTES_BIG_ENDIAN ? gen_altivec_vmrghb_direct
>> - : gen_altivec_vmrglb_direct;
>> - if (!BYTES_BIG_ENDIAN)
>> - std::swap (operands[1], operands[2]);
>> - emit_insn (fun (operands[0], operands[1], operands[2]));
>> + rtvec v = gen_rtvec (16, GEN_INT (0), GEN_INT (16), GEN_INT (1), GEN_INT (17),
>> + GEN_INT (2), GEN_INT (18), GEN_INT (3), GEN_INT (19),
>> + GEN_INT (4), GEN_INT (20), GEN_INT (5), GEN_INT (21),
>> + GEN_INT (6), GEN_INT (22), GEN_INT (7), GEN_INT (23));
>> + rtx x = gen_rtx_VEC_CONCAT (V32QImode, operands[1], operands[2]);
>> + x = gen_rtx_VEC_SELECT (V16QImode, x, gen_rtx_PARALLEL (VOIDmode, v));
>> + emit_insn (gen_rtx_SET (operands[0], x));
>> DONE;
>> })
>
> I think you can just call gen_altivec_vmrghb_direct_be and
> gen_altivec_vmrghb_direct_le separately here. Similar for some other
> define_expands.
>
>>
>> -(define_insn "altivec_vmrghb_direct"
>> +(define_insn "altivec_vmrghb_direct_be"
>> [(set (match_operand:V16QI 0 "register_operand" "=v")
>> (vec_select:V16QI
>> (vec_concat:V32QI
>> @@ -1166,27 +1168,46 @@ (define_insn "altivec_vmrghb_direct"
>> (const_int 5) (const_int 21)
>> (const_int 6) (const_int 22)
>> (const_int 7) (const_int 23)])))]
>> - "TARGET_ALTIVEC"
>> + "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
>> "vmrghb %0,%1,%2"
>> [(set_attr "type" "vecperm")])
>>
>
> Could you move the following altivec_vmrghb_direct_le here?
> Then readers can easily check the difference between be and
> le for the same altivec_vmrghb_direct.
>
> Same comment applied for some other similar cases.
>
>> +(define_insn "altivec_vmrglb_direct_le"
>> + [(set (match_operand:V16QI 0 "register_operand" "=v")
>> + (vec_select:V16QI
>> + (vec_concat:V32QI
>> + (match_operand:V16QI 1 "register_operand" "v")
>> + (match_operand:V16QI 2 "register_operand" "v"))
>> + (parallel [(const_int 0) (const_int 16)
>> + (const_int 1) (const_int 17)
>> + (const_int 2) (const_int 18)
>> + (const_int 3) (const_int 19)
>> + (const_int 4) (const_int 20)
>> + (const_int 5) (const_int 21)
>> + (const_int 6) (const_int 22)
>> + (const_int 7) (const_int 23)])))]
>> + "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
>> + "vmrglb %0,%2,%1"
>> + [(set_attr "type" "vecperm")])
>
> Could you update this pattern for assembly "vmrglb %0,%1,%2"
> instead of "vmrglb %0,%2,%1"? I checked the previous md
> before the culprit commit 0910c516a3d72af048, it emits
> "vmrglb %0,%1,%2" for altivec_vmrglb_direct.
>
> Same comment applied for some other similar cases.
>
>> +
>> (define_expand "altivec_vmrghh"
>> [(use (match_operand:V8HI 0 "register_operand"))
>> (use (match_operand:V8HI 1 "register_operand"))
>> (use (match_operand:V8HI 2 "register_operand"))]
>> "TARGET_ALTIVEC"
>> {
>> - rtx (*fun) (rtx, rtx, rtx) = BYTES_BIG_ENDIAN ? gen_altivec_vmrghh_direct
>> - : gen_altivec_vmrglh_direct;
>> - if (!BYTES_BIG_ENDIAN)
>> - std::swap (operands[1], operands[2]);
>> - emit_insn (fun (operands[0], operands[1], operands[2]));
>> + rtvec v = gen_rtvec (8, GEN_INT (0), GEN_INT (8), GEN_INT (1), GEN_INT (9),
>> + GEN_INT (2), GEN_INT (10), GEN_INT (3), GEN_INT (11));
>> + rtx x = gen_rtx_VEC_CONCAT (V16HImode, operands[1], operands[2]);
>> +
>> + x = gen_rtx_VEC_SELECT (V8HImode, x, gen_rtx_PARALLEL (VOIDmode, v));
>> + emit_insn (gen_rtx_SET (operands[0], x));
>> DONE;
>> })
>>
>> -(define_insn "altivec_vmrghh_direct"
>> +(define_insn "altivec_vmrghh_direct_be"
>> [(set (match_operand:V8HI 0 "register_operand" "=v")
>> - (vec_select:V8HI
>> + (vec_select:V8HI
>> (vec_concat:V16HI
>> (match_operand:V8HI 1 "register_operand" "v")
>> (match_operand:V8HI 2 "register_operand" "v"))
>> @@ -1194,26 +1215,38 @@ (define_insn "altivec_vmrghh_direct"
>> (const_int 1) (const_int 9)
>> (const_int 2) (const_int 10)
>> (const_int 3) (const_int 11)])))]
>> - "TARGET_ALTIVEC"
>> + "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
>> "vmrghh %0,%1,%2"
>> [(set_attr "type" "vecperm")])
>>
>> +(define_insn "altivec_vmrglh_direct_le"
>> + [(set (match_operand:V8HI 0 "register_operand" "=v")
>> + (vec_select:V8HI
>> + (vec_concat:V16HI
>> + (match_operand:V8HI 1 "register_operand" "v")
>> + (match_operand:V8HI 2 "register_operand" "v"))
>> + (parallel [(const_int 0) (const_int 8)
>> + (const_int 1) (const_int 9)
>> + (const_int 2) (const_int 10)
>> + (const_int 3) (const_int 11)])))]
>> + "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
>> + "vmrglh %0,%2,%1"
>> + [(set_attr "type" "vecperm")])
>> +
>> (define_expand "altivec_vmrghw"
>> [(use (match_operand:V4SI 0 "register_operand"))
>> (use (match_operand:V4SI 1 "register_operand"))
>> (use (match_operand:V4SI 2 "register_operand"))]
>> "VECTOR_MEM_ALTIVEC_P (V4SImode)"
>> {
>> - rtx (*fun) (rtx, rtx, rtx);
>> - fun = BYTES_BIG_ENDIAN ? gen_altivec_vmrghw_direct_v4si
>> - : gen_altivec_vmrglw_direct_v4si;
>> - if (!BYTES_BIG_ENDIAN)
>> - std::swap (operands[1], operands[2]);
>> - emit_insn (fun (operands[0], operands[1], operands[2]));
>> + rtvec v = gen_rtvec (4, GEN_INT (0), GEN_INT (4), GEN_INT (1), GEN_INT (5));
>> + rtx x = gen_rtx_VEC_CONCAT (V8SImode, operands[1], operands[2]);
>> + x = gen_rtx_VEC_SELECT (V4SImode, x, gen_rtx_PARALLEL (VOIDmode, v));
>> + emit_insn (gen_rtx_SET (operands[0], x));
>> DONE;
>> })
>>
>> -(define_insn "altivec_vmrghw_direct_<mode>"
>> +(define_insn "altivec_vmrghw_direct_<mode>_be"
>> [(set (match_operand:VSX_W 0 "register_operand" "=wa,v")
>> (vec_select:VSX_W
>> (vec_concat:<VS_double>
>> @@ -1221,10 +1254,24 @@ (define_insn "altivec_vmrghw_direct_<mode>"
>> (match_operand:VSX_W 2 "register_operand" "wa,v"))
>> (parallel [(const_int 0) (const_int 4)
>> (const_int 1) (const_int 5)])))]
>> - "TARGET_ALTIVEC"
>> + "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
>> + "@
>> + xxmrghw %x0,%x1,%x2
>> + vmrghw %0,%1,%2"
>> + [(set_attr "type" "vecperm")])
>> +
>> +(define_insn "altivec_vmrglw_direct_<mode>_le"
>> + [(set (match_operand:VSX_W 0 "register_operand" "=wa,v")
>> + (vec_select:VSX_W
>> + (vec_concat:<VS_double>
>> + (match_operand:VSX_W 1 "register_operand" "wa,v")
>> + (match_operand:VSX_W 2 "register_operand" "wa,v"))
>> + (parallel [(const_int 0) (const_int 4)
>> + (const_int 1) (const_int 5)])))]
>> + "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
>> "@
>> - xxmrghw %x0,%x1,%x2
>> - vmrghw %0,%1,%2"
>> + xxmrglw %x0,%x2,%x1
>> + vmrglw %0,%2,%1"
>> [(set_attr "type" "vecperm")])
>>
>> (define_insn "*altivec_vmrghsf"
>> @@ -1250,15 +1297,17 @@ (define_expand "altivec_vmrglb"
>> (use (match_operand:V16QI 2 "register_operand"))]
>> "TARGET_ALTIVEC"
>> {
>> - rtx (*fun) (rtx, rtx, rtx) = BYTES_BIG_ENDIAN ? gen_altivec_vmrglb_direct
>> - : gen_altivec_vmrghb_direct;
>> - if (!BYTES_BIG_ENDIAN)
>> - std::swap (operands[1], operands[2]);
>> - emit_insn (fun (operands[0], operands[1], operands[2]));
>> + rtvec v = gen_rtvec (16, GEN_INT (8), GEN_INT (24), GEN_INT (9), GEN_INT (25),
>> + GEN_INT (10), GEN_INT (26), GEN_INT (11), GEN_INT (27),
>> + GEN_INT (12), GEN_INT (28), GEN_INT (13), GEN_INT (29),
>> + GEN_INT (14), GEN_INT (30), GEN_INT (15), GEN_INT (31));
>> + rtx x = gen_rtx_VEC_CONCAT (V32QImode, operands[1], operands[2]);
>> + x = gen_rtx_VEC_SELECT (V16QImode, x, gen_rtx_PARALLEL (VOIDmode, v));
>> + emit_insn (gen_rtx_SET (operands[0], x));
>> DONE;
>> })
>>
>> -(define_insn "altivec_vmrglb_direct"
>> +(define_insn "altivec_vmrglb_direct_be"
>> [(set (match_operand:V16QI 0 "register_operand" "=v")
>> (vec_select:V16QI
>> (vec_concat:V32QI
>> @@ -1272,25 +1321,43 @@ (define_insn "altivec_vmrglb_direct"
>> (const_int 13) (const_int 29)
>> (const_int 14) (const_int 30)
>> (const_int 15) (const_int 31)])))]
>> - "TARGET_ALTIVEC"
>> + "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
>> "vmrglb %0,%1,%2"
>> [(set_attr "type" "vecperm")])
>>
>> +(define_insn "altivec_vmrghb_direct_le"
>> + [(set (match_operand:V16QI 0 "register_operand" "=v")
>> + (vec_select:V16QI
>> + (vec_concat:V32QI
>> + (match_operand:V16QI 1 "register_operand" "v")
>> + (match_operand:V16QI 2 "register_operand" "v"))
>> + (parallel [(const_int 8) (const_int 24)
>> + (const_int 9) (const_int 25)
>> + (const_int 10) (const_int 26)
>> + (const_int 11) (const_int 27)
>> + (const_int 12) (const_int 28)
>> + (const_int 13) (const_int 29)
>> + (const_int 14) (const_int 30)
>> + (const_int 15) (const_int 31)])))]
>> + "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
>> + "vmrghb %0,%2,%1"
>> + [(set_attr "type" "vecperm")])
>> +
>> (define_expand "altivec_vmrglh"
>> [(use (match_operand:V8HI 0 "register_operand"))
>> (use (match_operand:V8HI 1 "register_operand"))
>> (use (match_operand:V8HI 2 "register_operand"))]
>> "TARGET_ALTIVEC"
>> {
>> - rtx (*fun) (rtx, rtx, rtx) = BYTES_BIG_ENDIAN ? gen_altivec_vmrglh_direct
>> - : gen_altivec_vmrghh_direct;
>> - if (!BYTES_BIG_ENDIAN)
>> - std::swap (operands[1], operands[2]);
>> - emit_insn (fun (operands[0], operands[1], operands[2]));
>> + rtvec v = gen_rtvec (8, GEN_INT (4), GEN_INT (12), GEN_INT (5), GEN_INT (13),
>> + GEN_INT (6), GEN_INT (14), GEN_INT (7), GEN_INT (15));
>> + rtx x = gen_rtx_VEC_CONCAT (V16HImode, operands[1], operands[2]);
>> + x = gen_rtx_VEC_SELECT (V8HImode, x, gen_rtx_PARALLEL (VOIDmode, v));
>> + emit_insn (gen_rtx_SET (operands[0], x));
>> DONE;
>> })
>>
>> -(define_insn "altivec_vmrglh_direct"
>> +(define_insn "altivec_vmrglh_direct_be"
>> [(set (match_operand:V8HI 0 "register_operand" "=v")
>> (vec_select:V8HI
>> (vec_concat:V16HI
>> @@ -1300,26 +1367,38 @@ (define_insn "altivec_vmrglh_direct"
>> (const_int 5) (const_int 13)
>> (const_int 6) (const_int 14)
>> (const_int 7) (const_int 15)])))]
>> - "TARGET_ALTIVEC"
>> + "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
>> "vmrglh %0,%1,%2"
>> [(set_attr "type" "vecperm")])
>>
>> +(define_insn "altivec_vmrghh_direct_le"
>> + [(set (match_operand:V8HI 0 "register_operand" "=v")
>> + (vec_select:V8HI
>> + (vec_concat:V16HI
>> + (match_operand:V8HI 1 "register_operand" "v")
>> + (match_operand:V8HI 2 "register_operand" "v"))
>> + (parallel [(const_int 4) (const_int 12)
>> + (const_int 5) (const_int 13)
>> + (const_int 6) (const_int 14)
>> + (const_int 7) (const_int 15)])))]
>> + "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
>> + "vmrghh %0,%2,%1"
>> + [(set_attr "type" "vecperm")])
>> +
>> (define_expand "altivec_vmrglw"
>> [(use (match_operand:V4SI 0 "register_operand"))
>> (use (match_operand:V4SI 1 "register_operand"))
>> (use (match_operand:V4SI 2 "register_operand"))]
>> "VECTOR_MEM_ALTIVEC_P (V4SImode)"
>> {
>> - rtx (*fun) (rtx, rtx, rtx);
>> - fun = BYTES_BIG_ENDIAN ? gen_altivec_vmrglw_direct_v4si
>> - : gen_altivec_vmrghw_direct_v4si;
>> - if (!BYTES_BIG_ENDIAN)
>> - std::swap (operands[1], operands[2]);
>> - emit_insn (fun (operands[0], operands[1], operands[2]));
>> + rtvec v = gen_rtvec (4, GEN_INT (2), GEN_INT (6), GEN_INT (3), GEN_INT (7));
>> + rtx x = gen_rtx_VEC_CONCAT (V8SImode, operands[1], operands[2]);
>> + x = gen_rtx_VEC_SELECT (V4SImode, x, gen_rtx_PARALLEL (VOIDmode, v));
>> + emit_insn (gen_rtx_SET (operands[0], x));
>> DONE;
>> })
>>
>> -(define_insn "altivec_vmrglw_direct_<mode>"
>> +(define_insn "altivec_vmrglw_direct_<mode>_be"
>> [(set (match_operand:VSX_W 0 "register_operand" "=wa,v")
>> (vec_select:VSX_W
>> (vec_concat:<VS_double>
>> @@ -1327,10 +1406,24 @@ (define_insn "altivec_vmrglw_direct_<mode>"
>> (match_operand:VSX_W 2 "register_operand" "wa,v"))
>> (parallel [(const_int 2) (const_int 6)
>> (const_int 3) (const_int 7)])))]
>> - "TARGET_ALTIVEC"
>> + "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
>> + "@
>> + xxmrglw %x0,%x1,%x2
>> + vmrglw %0,%1,%2"
>> + [(set_attr "type" "vecperm")])
>> +
>> +(define_insn "altivec_vmrghw_direct_<mode>_le"
>> + [(set (match_operand:VSX_W 0 "register_operand" "=wa,v")
>> + (vec_select:VSX_W
>> + (vec_concat:<VS_double>
>> + (match_operand:VSX_W 1 "register_operand" "wa,v")
>> + (match_operand:VSX_W 2 "register_operand" "wa,v"))
>> + (parallel [(const_int 2) (const_int 6)
>> + (const_int 3) (const_int 7)])))]
>> + "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
>> "@
>> - xxmrglw %x0,%x1,%x2
>> - vmrglw %0,%1,%2"
>> + xxmrghw %x0,%x2,%x1
>> + vmrghw %0,%2,%1"
>> [(set_attr "type" "vecperm")])
>>
>> (define_insn "*altivec_vmrglsf"
>> @@ -3699,13 +3792,13 @@ (define_expand "vec_widen_umult_hi_v16qi"
>> {
>> emit_insn (gen_altivec_vmuleub (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmuloub (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrghh_direct (operands[0], ve, vo));
>> + emit_insn (gen_altivec_vmrghh_direct_be (operands[0], ve, vo));
>> }
>> else
>> {
>> emit_insn (gen_altivec_vmuloub (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmuleub (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrghh_direct (operands[0], vo, ve));
>> + emit_insn (gen_altivec_vmrghh_direct_le (operands[0], ve, vo));
>
> Note that if you change assembly "vmrghh %0,%2,%1" to "vmrghh %0,%1,%2",
> you need to change this to:
>
> emit_insn (gen_altivec_vmrghh_direct_le (operands[0], vo, ve));
>
> Same comment applied for some other similar cases.
>
>> }
>> DONE;
>> })
>> @@ -3724,13 +3817,13 @@ (define_expand "vec_widen_umult_lo_v16qi"
>> {
>> emit_insn (gen_altivec_vmuleub (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmuloub (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrglh_direct (operands[0], ve, vo));
>> + emit_insn (gen_altivec_vmrglh_direct_be (operands[0], ve, vo));
>> }
>> else
>> {
>> emit_insn (gen_altivec_vmuloub (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmuleub (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrglh_direct (operands[0], vo, ve));
>> + emit_insn (gen_altivec_vmrglh_direct_le (operands[0], ve, vo));
>> }
>> DONE;
>> })
>> @@ -3749,13 +3842,13 @@ (define_expand "vec_widen_smult_hi_v16qi"
>> {
>> emit_insn (gen_altivec_vmulesb (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulosb (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrghh_direct (operands[0], ve, vo));
>> + emit_insn (gen_altivec_vmrghh_direct_be (operands[0], ve, vo));
>> }
>> else
>> {
>> emit_insn (gen_altivec_vmulosb (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulesb (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrghh_direct (operands[0], vo, ve));
>> + emit_insn (gen_altivec_vmrghh_direct_le (operands[0], ve, vo));
>> }
>> DONE;
>> })
>> @@ -3774,13 +3867,13 @@ (define_expand "vec_widen_smult_lo_v16qi"
>> {
>> emit_insn (gen_altivec_vmulesb (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulosb (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrglh_direct (operands[0], ve, vo));
>> + emit_insn (gen_altivec_vmrglh_direct_be (operands[0], ve, vo));
>> }
>> else
>> {
>> emit_insn (gen_altivec_vmulosb (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulesb (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrglh_direct (operands[0], vo, ve));
>> + emit_insn (gen_altivec_vmrglh_direct_le (operands[0], ve, vo));
>> }
>> DONE;
>> })
>> @@ -3799,13 +3892,13 @@ (define_expand "vec_widen_umult_hi_v8hi"
>> {
>> emit_insn (gen_altivec_vmuleuh (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulouh (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrghw_direct_v4si (operands[0], ve, vo));
>> + emit_insn (gen_altivec_vmrghw_direct_v4si_be (operands[0], ve, vo));
>> }
>> else
>> {
>> emit_insn (gen_altivec_vmulouh (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmuleuh (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrghw_direct_v4si (operands[0], vo, ve));
>> + emit_insn (gen_altivec_vmrghw_direct_v4si_le (operands[0], ve, vo));
>> }
>> DONE;
>> })
>> @@ -3824,13 +3917,13 @@ (define_expand "vec_widen_umult_lo_v8hi"
>> {
>> emit_insn (gen_altivec_vmuleuh (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulouh (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrglw_direct_v4si (operands[0], ve, vo));
>> + emit_insn (gen_altivec_vmrglw_direct_v4si_be (operands[0], ve, vo));
>> }
>> else
>> {
>> emit_insn (gen_altivec_vmulouh (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmuleuh (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrglw_direct_v4si (operands[0], vo, ve));
>> + emit_insn (gen_altivec_vmrglw_direct_v4si_le (operands[0], ve, vo));
>> }
>> DONE;
>> })
>> @@ -3849,13 +3942,13 @@ (define_expand "vec_widen_smult_hi_v8hi"
>> {
>> emit_insn (gen_altivec_vmulesh (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulosh (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrghw_direct_v4si (operands[0], ve, vo));
>> + emit_insn (gen_altivec_vmrghw_direct_v4si_be (operands[0], ve, vo));
>> }
>> else
>> {
>> emit_insn (gen_altivec_vmulosh (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulesh (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrghw_direct_v4si (operands[0], vo, ve));
>> + emit_insn (gen_altivec_vmrghw_direct_v4si_le (operands[0], ve, vo));
>> }
>> DONE;
>> })
>> @@ -3874,13 +3967,13 @@ (define_expand "vec_widen_smult_lo_v8hi"
>> {
>> emit_insn (gen_altivec_vmulesh (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulosh (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrglw_direct_v4si (operands[0], ve, vo));
>> + emit_insn (gen_altivec_vmrglw_direct_v4si_be (operands[0], ve, vo));
>> }
>> else
>> {
>> emit_insn (gen_altivec_vmulosh (ve, operands[1], operands[2]));
>> emit_insn (gen_altivec_vmulesh (vo, operands[1], operands[2]));
>> - emit_insn (gen_altivec_vmrglw_direct_v4si (operands[0], vo, ve));
>> + emit_insn (gen_altivec_vmrglw_direct_v4si_le (operands[0], ve, vo));
>> }
>> DONE;
>> })
>> diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
>> index df491bee2ea..97da7706f63 100644
>> --- a/gcc/config/rs6000/rs6000.cc
>> +++ b/gcc/config/rs6000/rs6000.cc
>> @@ -22941,29 +22941,17 @@ altivec_expand_vec_perm_const (rtx target, rtx op0, rtx op1,
>> {OPTION_MASK_ALTIVEC,
>> CODE_FOR_altivec_vpkuwum_direct,
>> {2, 3, 6, 7, 10, 11, 14, 15, 18, 19, 22, 23, 26, 27, 30, 31}},
>> - {OPTION_MASK_ALTIVEC,
>> - BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghb_direct
>> - : CODE_FOR_altivec_vmrglb_direct,
>> + {OPTION_MASK_ALTIVEC, CODE_FOR_altivec_vmrghb_direct_be,
>> {0, 16, 1, 17, 2, 18, 3, 19, 4, 20, 5, 21, 6, 22, 7, 23}},
>
> Before the culprit commit 0910c516a3d72af04, we have:
>
> { OPTION_MASK_ALTIVEC,
> (BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghb_direct
> : CODE_FOR_altivec_vmrglb_direct),
> { 0, 16, 1, 17, 2, 18, 3, 19, 4, 20, 5, 21, 6, 22, 7, 23 } },
>
> I think we should use:
>
> { OPTION_MASK_ALTIVEC,
> (BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghb_direct_be
> : CODE_FOR_altivec_vmrglb_direct_le),
> { 0, 16, 1, 17, 2, 18, 3, 19, 4, 20, 5, 21, 6, 22, 7, 23 } },
>
> here instead. Similar comment for those related below.
>
>> - {OPTION_MASK_ALTIVEC,
>> - BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghh_direct
>> - : CODE_FOR_altivec_vmrglh_direct,
>> + {OPTION_MASK_ALTIVEC, CODE_FOR_altivec_vmrghh_direct_be,
>> {0, 1, 16, 17, 2, 3, 18, 19, 4, 5, 20, 21, 6, 7, 22, 23}},
>> - {OPTION_MASK_ALTIVEC,
>> - BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghw_direct_v4si
>> - : CODE_FOR_altivec_vmrglw_direct_v4si,
>> + {OPTION_MASK_ALTIVEC, CODE_FOR_altivec_vmrghw_direct_v4si_be,
>> {0, 1, 2, 3, 16, 17, 18, 19, 4, 5, 6, 7, 20, 21, 22, 23}},
>> - {OPTION_MASK_ALTIVEC,
>> - BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrglb_direct
>> - : CODE_FOR_altivec_vmrghb_direct,
>> + {OPTION_MASK_ALTIVEC, CODE_FOR_altivec_vmrglb_direct_be,
>> {8, 24, 9, 25, 10, 26, 11, 27, 12, 28, 13, 29, 14, 30, 15, 31}},
>> - {OPTION_MASK_ALTIVEC,
>> - BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrglh_direct
>> - : CODE_FOR_altivec_vmrghh_direct,
>> + {OPTION_MASK_ALTIVEC, CODE_FOR_altivec_vmrglh_direct_be,
>> {8, 9, 24, 25, 10, 11, 26, 27, 12, 13, 28, 29, 14, 15, 30, 31}},
>> - {OPTION_MASK_ALTIVEC,
>> - BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrglw_direct_v4si
>> - : CODE_FOR_altivec_vmrghw_direct_v4si,
>> + {OPTION_MASK_ALTIVEC, CODE_FOR_altivec_vmrglw_direct_v4si_be,
>> {8, 9, 10, 11, 24, 25, 26, 27, 12, 13, 14, 15, 28, 29, 30, 31}},
>> {OPTION_MASK_P8_VECTOR,
>> BYTES_BIG_ENDIAN ? CODE_FOR_p8_vmrgew_v4sf_direct
>> @@ -23146,9 +23134,15 @@ altivec_expand_vec_perm_const (rtx target, rtx op0, rtx op1,
>>
>> /* For little-endian, the two input operands must be swapped
>> (or swapped back) to ensure proper right-to-left numbering
>> - from 0 to 2N-1. */
>> - if (swapped ^ !BYTES_BIG_ENDIAN
>> - && icode != CODE_FOR_vsx_xxpermdi_v16qi)
>> + from 0 to 2N-1. Excludes the vmrg[lh][bhw] and xxpermdi ops. */
>> + if (swapped ^ !BYTES_BIG_ENDIAN)
>> + if (!(icode == CODE_FOR_altivec_vmrghb_direct_be
>> + || icode == CODE_FOR_altivec_vmrglb_direct_be
>> + || icode == CODE_FOR_altivec_vmrghh_direct_be
>> + || icode == CODE_FOR_altivec_vmrglh_direct_be
>> + || icode == CODE_FOR_altivec_vmrghw_direct_v4si_be
>> + || icode == CODE_FOR_altivec_vmrglw_direct_v4si_be
>> + || icode == CODE_FOR_vsx_xxpermdi_v16qi))
>> std::swap (op0, op1);
>
> IIUC, we don't need this part of change once we fix the operand order in
> the assembly for those LE "direct"s.
>
> BR,
> Kewen
>
Thanks. Addressed all the comments as v4.
v4: Update per comments.
v3: rename altivec_vmrghb_direct_le to altivec_vmrglb_direct_le to match
the actual output ASM vmrglb. Likewise for all similar xxx_direct_le
patterns.
v2: Split the direct pattern to be and le with same RTL but different insn.
The native RTL expression for vec_mrghw should be same for BE and LE as
they are register and endian-independent. So both BE and LE need
generate exactly same RTL with index [0 4 1 5] when expanding vec_mrghw
with vec_select and vec_concat.
(set (reg:V4SI 141) (vec_select:V4SI (vec_concat:V8SI
(subreg:V4SI (reg:V16QI 139) 0)
(subreg:V4SI (reg:V16QI 140) 0))
[const_int 0 4 1 5]))
Then combine pass could do the nested vec_select optimization
in simplify-rtx.c:simplify_binary_operation_1 also on both BE and LE:
21: r150:V4SI=vec_select(vec_concat(r141:V4SI,r146:V4SI),parallel [0 4 1 5])
24: {r151:SI=vec_select(r150:V4SI,parallel [const_int 3]);}
=>
21: r150:V4SI=vec_select(vec_concat(r141:V4SI,r146:V4SI),parallel)
24: {r151:SI=vec_select(r146:V4SI,parallel [const_int 1]);}
The endianness check need only once at ASM generation finally.
ASM would be better due to nested vec_select simplified to simple scalar
load.
Regression tested pass for Power8{LE,BE}{32,64} and Power{9,10}LE{32,64}
Linux.
gcc/ChangeLog:
PR target/106069
* config/rs6000/altivec.md (altivec_vmrghb_direct): Remove.
(altivec_vmrghb_direct_be): New pattern for BE.
(altivec_vmrghb_direct_le): New pattern for LE.
(altivec_vmrghh_direct): Remove.
(altivec_vmrghh_direct_be): New pattern for BE.
(altivec_vmrghh_direct_le): New pattern for LE.
(altivec_vmrghw_direct_<mode>): Remove.
(altivec_vmrghw_direct_<mode>_be): New pattern for BE.
(altivec_vmrghw_direct_<mode>_le): New pattern for LE.
(altivec_vmrglb_direct): Remove.
(altivec_vmrglb_direct_be): New pattern for BE.
(altivec_vmrglb_direct_le): New pattern for LE.
(altivec_vmrglh_direct): Remove.
(altivec_vmrglh_direct_be): New pattern for BE.
(altivec_vmrglh_direct_le): New pattern for LE.
(altivec_vmrglw_direct_<mode>): Remove.
(altivec_vmrglw_direct_<mode>_be): New pattern for BE.
(altivec_vmrglw_direct_<mode>_le): New pattern for LE.
* config/rs6000/rs6000.cc (altivec_expand_vec_perm_const):
Adjust.
* config/rs6000/vsx.md: Likewise.
gcc/testsuite/ChangeLog:
PR target/106069
* g++.target/powerpc/pr106069.C: New test.
Signed-off-by: Xionghu Luo <xionghuluo@tencent.com>
---
gcc/config/rs6000/altivec.md | 230 ++++++++++++++------
gcc/config/rs6000/rs6000.cc | 24 +-
gcc/config/rs6000/vsx.md | 28 ++-
gcc/testsuite/g++.target/powerpc/pr106069.C | 120 ++++++++++
4 files changed, 313 insertions(+), 89 deletions(-)
create mode 100644 gcc/testsuite/g++.target/powerpc/pr106069.C
diff --git a/gcc/config/rs6000/altivec.md b/gcc/config/rs6000/altivec.md
index 2c4940f2e21..962df4657e6 100644
--- a/gcc/config/rs6000/altivec.md
+++ b/gcc/config/rs6000/altivec.md
@@ -1144,15 +1144,16 @@ (define_expand "altivec_vmrghb"
(use (match_operand:V16QI 2 "register_operand"))]
"TARGET_ALTIVEC"
{
- rtx (*fun) (rtx, rtx, rtx) = BYTES_BIG_ENDIAN ? gen_altivec_vmrghb_direct
- : gen_altivec_vmrglb_direct;
- if (!BYTES_BIG_ENDIAN)
- std::swap (operands[1], operands[2]);
- emit_insn (fun (operands[0], operands[1], operands[2]));
+ if (BYTES_BIG_ENDIAN)
+ emit_insn (
+ gen_altivec_vmrghb_direct_be (operands[0], operands[1], operands[2]));
+ else
+ emit_insn (
+ gen_altivec_vmrglb_direct_le (operands[0], operands[2], operands[1]));
DONE;
})
-(define_insn "altivec_vmrghb_direct"
+(define_insn "altivec_vmrghb_direct_be"
[(set (match_operand:V16QI 0 "register_operand" "=v")
(vec_select:V16QI
(vec_concat:V32QI
@@ -1166,7 +1167,25 @@ (define_insn "altivec_vmrghb_direct"
(const_int 5) (const_int 21)
(const_int 6) (const_int 22)
(const_int 7) (const_int 23)])))]
- "TARGET_ALTIVEC"
+ "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
+ "vmrghb %0,%1,%2"
+ [(set_attr "type" "vecperm")])
+
+(define_insn "altivec_vmrghb_direct_le"
+ [(set (match_operand:V16QI 0 "register_operand" "=v")
+ (vec_select:V16QI
+ (vec_concat:V32QI
+ (match_operand:V16QI 2 "register_operand" "v")
+ (match_operand:V16QI 1 "register_operand" "v"))
+ (parallel [(const_int 8) (const_int 24)
+ (const_int 9) (const_int 25)
+ (const_int 10) (const_int 26)
+ (const_int 11) (const_int 27)
+ (const_int 12) (const_int 28)
+ (const_int 13) (const_int 29)
+ (const_int 14) (const_int 30)
+ (const_int 15) (const_int 31)])))]
+ "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
"vmrghb %0,%1,%2"
[(set_attr "type" "vecperm")])
@@ -1176,17 +1195,18 @@ (define_expand "altivec_vmrghh"
(use (match_operand:V8HI 2 "register_operand"))]
"TARGET_ALTIVEC"
{
- rtx (*fun) (rtx, rtx, rtx) = BYTES_BIG_ENDIAN ? gen_altivec_vmrghh_direct
- : gen_altivec_vmrglh_direct;
- if (!BYTES_BIG_ENDIAN)
- std::swap (operands[1], operands[2]);
- emit_insn (fun (operands[0], operands[1], operands[2]));
+ if (BYTES_BIG_ENDIAN)
+ emit_insn (
+ gen_altivec_vmrghh_direct_be (operands[0], operands[1], operands[2]));
+ else
+ emit_insn (
+ gen_altivec_vmrglh_direct_le (operands[0], operands[2], operands[1]));
DONE;
})
-(define_insn "altivec_vmrghh_direct"
+(define_insn "altivec_vmrghh_direct_be"
[(set (match_operand:V8HI 0 "register_operand" "=v")
- (vec_select:V8HI
+ (vec_select:V8HI
(vec_concat:V16HI
(match_operand:V8HI 1 "register_operand" "v")
(match_operand:V8HI 2 "register_operand" "v"))
@@ -1194,7 +1214,21 @@ (define_insn "altivec_vmrghh_direct"
(const_int 1) (const_int 9)
(const_int 2) (const_int 10)
(const_int 3) (const_int 11)])))]
- "TARGET_ALTIVEC"
+ "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
+ "vmrghh %0,%1,%2"
+ [(set_attr "type" "vecperm")])
+
+(define_insn "altivec_vmrghh_direct_le"
+ [(set (match_operand:V8HI 0 "register_operand" "=v")
+ (vec_select:V8HI
+ (vec_concat:V16HI
+ (match_operand:V8HI 2 "register_operand" "v")
+ (match_operand:V8HI 1 "register_operand" "v"))
+ (parallel [(const_int 4) (const_int 12)
+ (const_int 5) (const_int 13)
+ (const_int 6) (const_int 14)
+ (const_int 7) (const_int 15)])))]
+ "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
"vmrghh %0,%1,%2"
[(set_attr "type" "vecperm")])
@@ -1204,16 +1238,18 @@ (define_expand "altivec_vmrghw"
(use (match_operand:V4SI 2 "register_operand"))]
"VECTOR_MEM_ALTIVEC_P (V4SImode)"
{
- rtx (*fun) (rtx, rtx, rtx);
- fun = BYTES_BIG_ENDIAN ? gen_altivec_vmrghw_direct_v4si
- : gen_altivec_vmrglw_direct_v4si;
- if (!BYTES_BIG_ENDIAN)
- std::swap (operands[1], operands[2]);
- emit_insn (fun (operands[0], operands[1], operands[2]));
+ if (BYTES_BIG_ENDIAN)
+ emit_insn (gen_altivec_vmrghw_direct_v4si_be (operands[0],
+ operands[1],
+ operands[2]));
+ else
+ emit_insn (gen_altivec_vmrglw_direct_v4si_le (operands[0],
+ operands[2],
+ operands[1]));
DONE;
})
-(define_insn "altivec_vmrghw_direct_<mode>"
+(define_insn "altivec_vmrghw_direct_<mode>_be"
[(set (match_operand:VSX_W 0 "register_operand" "=wa,v")
(vec_select:VSX_W
(vec_concat:<VS_double>
@@ -1221,10 +1257,24 @@ (define_insn "altivec_vmrghw_direct_<mode>"
(match_operand:VSX_W 2 "register_operand" "wa,v"))
(parallel [(const_int 0) (const_int 4)
(const_int 1) (const_int 5)])))]
- "TARGET_ALTIVEC"
+ "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
+ "@
+ xxmrghw %x0,%x1,%x2
+ vmrghw %0,%1,%2"
+ [(set_attr "type" "vecperm")])
+
+(define_insn "altivec_vmrghw_direct_<mode>_le"
+ [(set (match_operand:VSX_W 0 "register_operand" "=wa,v")
+ (vec_select:VSX_W
+ (vec_concat:<VS_double>
+ (match_operand:VSX_W 2 "register_operand" "wa,v")
+ (match_operand:VSX_W 1 "register_operand" "wa,v"))
+ (parallel [(const_int 2) (const_int 6)
+ (const_int 3) (const_int 7)])))]
+ "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
"@
- xxmrghw %x0,%x1,%x2
- vmrghw %0,%1,%2"
+ xxmrghw %x0,%x1,%x2
+ vmrghw %0,%1,%2"
[(set_attr "type" "vecperm")])
(define_insn "*altivec_vmrghsf"
@@ -1250,15 +1300,16 @@ (define_expand "altivec_vmrglb"
(use (match_operand:V16QI 2 "register_operand"))]
"TARGET_ALTIVEC"
{
- rtx (*fun) (rtx, rtx, rtx) = BYTES_BIG_ENDIAN ? gen_altivec_vmrglb_direct
- : gen_altivec_vmrghb_direct;
- if (!BYTES_BIG_ENDIAN)
- std::swap (operands[1], operands[2]);
- emit_insn (fun (operands[0], operands[1], operands[2]));
+ if (BYTES_BIG_ENDIAN)
+ emit_insn (
+ gen_altivec_vmrglb_direct_be (operands[0], operands[1], operands[2]));
+ else
+ emit_insn (
+ gen_altivec_vmrghb_direct_le (operands[0], operands[2], operands[1]));
DONE;
})
-(define_insn "altivec_vmrglb_direct"
+(define_insn "altivec_vmrglb_direct_be"
[(set (match_operand:V16QI 0 "register_operand" "=v")
(vec_select:V16QI
(vec_concat:V32QI
@@ -1272,7 +1323,25 @@ (define_insn "altivec_vmrglb_direct"
(const_int 13) (const_int 29)
(const_int 14) (const_int 30)
(const_int 15) (const_int 31)])))]
- "TARGET_ALTIVEC"
+ "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
+ "vmrglb %0,%1,%2"
+ [(set_attr "type" "vecperm")])
+
+(define_insn "altivec_vmrglb_direct_le"
+ [(set (match_operand:V16QI 0 "register_operand" "=v")
+ (vec_select:V16QI
+ (vec_concat:V32QI
+ (match_operand:V16QI 2 "register_operand" "v")
+ (match_operand:V16QI 1 "register_operand" "v"))
+ (parallel [(const_int 0) (const_int 16)
+ (const_int 1) (const_int 17)
+ (const_int 2) (const_int 18)
+ (const_int 3) (const_int 19)
+ (const_int 4) (const_int 20)
+ (const_int 5) (const_int 21)
+ (const_int 6) (const_int 22)
+ (const_int 7) (const_int 23)])))]
+ "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
"vmrglb %0,%1,%2"
[(set_attr "type" "vecperm")])
@@ -1282,15 +1351,16 @@ (define_expand "altivec_vmrglh"
(use (match_operand:V8HI 2 "register_operand"))]
"TARGET_ALTIVEC"
{
- rtx (*fun) (rtx, rtx, rtx) = BYTES_BIG_ENDIAN ? gen_altivec_vmrglh_direct
- : gen_altivec_vmrghh_direct;
- if (!BYTES_BIG_ENDIAN)
- std::swap (operands[1], operands[2]);
- emit_insn (fun (operands[0], operands[1], operands[2]));
+ if (BYTES_BIG_ENDIAN)
+ emit_insn (
+ gen_altivec_vmrglh_direct_be (operands[0], operands[1], operands[2]));
+ else
+ emit_insn (
+ gen_altivec_vmrghh_direct_le (operands[0], operands[2], operands[1]));
DONE;
})
-(define_insn "altivec_vmrglh_direct"
+(define_insn "altivec_vmrglh_direct_be"
[(set (match_operand:V8HI 0 "register_operand" "=v")
(vec_select:V8HI
(vec_concat:V16HI
@@ -1300,7 +1370,21 @@ (define_insn "altivec_vmrglh_direct"
(const_int 5) (const_int 13)
(const_int 6) (const_int 14)
(const_int 7) (const_int 15)])))]
- "TARGET_ALTIVEC"
+ "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
+ "vmrglh %0,%1,%2"
+ [(set_attr "type" "vecperm")])
+
+(define_insn "altivec_vmrglh_direct_le"
+ [(set (match_operand:V8HI 0 "register_operand" "=v")
+ (vec_select:V8HI
+ (vec_concat:V16HI
+ (match_operand:V8HI 2 "register_operand" "v")
+ (match_operand:V8HI 1 "register_operand" "v"))
+ (parallel [(const_int 0) (const_int 8)
+ (const_int 1) (const_int 9)
+ (const_int 2) (const_int 10)
+ (const_int 3) (const_int 11)])))]
+ "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
"vmrglh %0,%1,%2"
[(set_attr "type" "vecperm")])
@@ -1310,16 +1394,18 @@ (define_expand "altivec_vmrglw"
(use (match_operand:V4SI 2 "register_operand"))]
"VECTOR_MEM_ALTIVEC_P (V4SImode)"
{
- rtx (*fun) (rtx, rtx, rtx);
- fun = BYTES_BIG_ENDIAN ? gen_altivec_vmrglw_direct_v4si
- : gen_altivec_vmrghw_direct_v4si;
- if (!BYTES_BIG_ENDIAN)
- std::swap (operands[1], operands[2]);
- emit_insn (fun (operands[0], operands[1], operands[2]));
+ if (BYTES_BIG_ENDIAN)
+ emit_insn (gen_altivec_vmrglw_direct_v4si_be (operands[0],
+ operands[1],
+ operands[2]));
+ else
+ emit_insn (gen_altivec_vmrghw_direct_v4si_le (operands[0],
+ operands[2],
+ operands[1]));
DONE;
})
-(define_insn "altivec_vmrglw_direct_<mode>"
+(define_insn "altivec_vmrglw_direct_<mode>_be"
[(set (match_operand:VSX_W 0 "register_operand" "=wa,v")
(vec_select:VSX_W
(vec_concat:<VS_double>
@@ -1327,10 +1413,24 @@ (define_insn "altivec_vmrglw_direct_<mode>"
(match_operand:VSX_W 2 "register_operand" "wa,v"))
(parallel [(const_int 2) (const_int 6)
(const_int 3) (const_int 7)])))]
- "TARGET_ALTIVEC"
+ "TARGET_ALTIVEC && BYTES_BIG_ENDIAN"
+ "@
+ xxmrglw %x0,%x1,%x2
+ vmrglw %0,%1,%2"
+ [(set_attr "type" "vecperm")])
+
+(define_insn "altivec_vmrglw_direct_<mode>_le"
+ [(set (match_operand:VSX_W 0 "register_operand" "=wa,v")
+ (vec_select:VSX_W
+ (vec_concat:<VS_double>
+ (match_operand:VSX_W 2 "register_operand" "wa,v")
+ (match_operand:VSX_W 1 "register_operand" "wa,v"))
+ (parallel [(const_int 0) (const_int 4)
+ (const_int 1) (const_int 5)])))]
+ "TARGET_ALTIVEC && !BYTES_BIG_ENDIAN"
"@
- xxmrglw %x0,%x1,%x2
- vmrglw %0,%1,%2"
+ xxmrglw %x0,%x1,%x2
+ vmrglw %0,%1,%2"
[(set_attr "type" "vecperm")])
(define_insn "*altivec_vmrglsf"
@@ -3699,13 +3799,13 @@ (define_expand "vec_widen_umult_hi_v16qi"
{
emit_insn (gen_altivec_vmuleub (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmuloub (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrghh_direct (operands[0], ve, vo));
+ emit_insn (gen_altivec_vmrghh_direct_be (operands[0], ve, vo));
}
else
{
emit_insn (gen_altivec_vmuloub (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmuleub (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrghh_direct (operands[0], vo, ve));
+ emit_insn (gen_altivec_vmrghh_direct_le (operands[0], vo, ve));
}
DONE;
})
@@ -3724,13 +3824,13 @@ (define_expand "vec_widen_umult_lo_v16qi"
{
emit_insn (gen_altivec_vmuleub (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmuloub (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrglh_direct (operands[0], ve, vo));
+ emit_insn (gen_altivec_vmrglh_direct_be (operands[0], ve, vo));
}
else
{
emit_insn (gen_altivec_vmuloub (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmuleub (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrglh_direct (operands[0], vo, ve));
+ emit_insn (gen_altivec_vmrglh_direct_le (operands[0], vo, ve));
}
DONE;
})
@@ -3749,13 +3849,13 @@ (define_expand "vec_widen_smult_hi_v16qi"
{
emit_insn (gen_altivec_vmulesb (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulosb (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrghh_direct (operands[0], ve, vo));
+ emit_insn (gen_altivec_vmrghh_direct_be (operands[0], ve, vo));
}
else
{
emit_insn (gen_altivec_vmulosb (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulesb (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrghh_direct (operands[0], vo, ve));
+ emit_insn (gen_altivec_vmrghh_direct_le (operands[0], vo, ve));
}
DONE;
})
@@ -3774,13 +3874,13 @@ (define_expand "vec_widen_smult_lo_v16qi"
{
emit_insn (gen_altivec_vmulesb (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulosb (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrglh_direct (operands[0], ve, vo));
+ emit_insn (gen_altivec_vmrglh_direct_be (operands[0], ve, vo));
}
else
{
emit_insn (gen_altivec_vmulosb (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulesb (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrglh_direct (operands[0], vo, ve));
+ emit_insn (gen_altivec_vmrglh_direct_le (operands[0], vo, ve));
}
DONE;
})
@@ -3799,13 +3899,13 @@ (define_expand "vec_widen_umult_hi_v8hi"
{
emit_insn (gen_altivec_vmuleuh (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulouh (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrghw_direct_v4si (operands[0], ve, vo));
+ emit_insn (gen_altivec_vmrghw_direct_v4si_be (operands[0], ve, vo));
}
else
{
emit_insn (gen_altivec_vmulouh (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmuleuh (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrghw_direct_v4si (operands[0], vo, ve));
+ emit_insn (gen_altivec_vmrghw_direct_v4si_le (operands[0], vo, ve));
}
DONE;
})
@@ -3824,13 +3924,13 @@ (define_expand "vec_widen_umult_lo_v8hi"
{
emit_insn (gen_altivec_vmuleuh (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulouh (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrglw_direct_v4si (operands[0], ve, vo));
+ emit_insn (gen_altivec_vmrglw_direct_v4si_be (operands[0], ve, vo));
}
else
{
emit_insn (gen_altivec_vmulouh (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmuleuh (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrglw_direct_v4si (operands[0], vo, ve));
+ emit_insn (gen_altivec_vmrglw_direct_v4si_le (operands[0], vo, ve));
}
DONE;
})
@@ -3849,13 +3949,13 @@ (define_expand "vec_widen_smult_hi_v8hi"
{
emit_insn (gen_altivec_vmulesh (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulosh (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrghw_direct_v4si (operands[0], ve, vo));
+ emit_insn (gen_altivec_vmrghw_direct_v4si_be (operands[0], ve, vo));
}
else
{
emit_insn (gen_altivec_vmulosh (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulesh (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrghw_direct_v4si (operands[0], vo, ve));
+ emit_insn (gen_altivec_vmrghw_direct_v4si_le (operands[0], vo, ve));
}
DONE;
})
@@ -3874,13 +3974,13 @@ (define_expand "vec_widen_smult_lo_v8hi"
{
emit_insn (gen_altivec_vmulesh (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulosh (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrglw_direct_v4si (operands[0], ve, vo));
+ emit_insn (gen_altivec_vmrglw_direct_v4si_be (operands[0], ve, vo));
}
else
{
emit_insn (gen_altivec_vmulosh (ve, operands[1], operands[2]));
emit_insn (gen_altivec_vmulesh (vo, operands[1], operands[2]));
- emit_insn (gen_altivec_vmrglw_direct_v4si (operands[0], vo, ve));
+ emit_insn (gen_altivec_vmrglw_direct_v4si_le (operands[0], vo, ve));
}
DONE;
})
diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
index df491bee2ea..c6ccd40e089 100644
--- a/gcc/config/rs6000/rs6000.cc
+++ b/gcc/config/rs6000/rs6000.cc
@@ -22942,28 +22942,28 @@ altivec_expand_vec_perm_const (rtx target, rtx op0, rtx op1,
CODE_FOR_altivec_vpkuwum_direct,
{2, 3, 6, 7, 10, 11, 14, 15, 18, 19, 22, 23, 26, 27, 30, 31}},
{OPTION_MASK_ALTIVEC,
- BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghb_direct
- : CODE_FOR_altivec_vmrglb_direct,
+ BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghb_direct_be
+ : CODE_FOR_altivec_vmrglb_direct_le,
{0, 16, 1, 17, 2, 18, 3, 19, 4, 20, 5, 21, 6, 22, 7, 23}},
{OPTION_MASK_ALTIVEC,
- BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghh_direct
- : CODE_FOR_altivec_vmrglh_direct,
+ BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghh_direct_be
+ : CODE_FOR_altivec_vmrglh_direct_le,
{0, 1, 16, 17, 2, 3, 18, 19, 4, 5, 20, 21, 6, 7, 22, 23}},
{OPTION_MASK_ALTIVEC,
- BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghw_direct_v4si
- : CODE_FOR_altivec_vmrglw_direct_v4si,
+ BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrghw_direct_v4si_be
+ : CODE_FOR_altivec_vmrglw_direct_v4si_le,
{0, 1, 2, 3, 16, 17, 18, 19, 4, 5, 6, 7, 20, 21, 22, 23}},
{OPTION_MASK_ALTIVEC,
- BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrglb_direct
- : CODE_FOR_altivec_vmrghb_direct,
+ BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrglb_direct_be
+ : CODE_FOR_altivec_vmrghb_direct_le,
{8, 24, 9, 25, 10, 26, 11, 27, 12, 28, 13, 29, 14, 30, 15, 31}},
{OPTION_MASK_ALTIVEC,
- BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrglh_direct
- : CODE_FOR_altivec_vmrghh_direct,
+ BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrglh_direct_be
+ : CODE_FOR_altivec_vmrghh_direct_le,
{8, 9, 24, 25, 10, 11, 26, 27, 12, 13, 28, 29, 14, 15, 30, 31}},
{OPTION_MASK_ALTIVEC,
- BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrglw_direct_v4si
- : CODE_FOR_altivec_vmrghw_direct_v4si,
+ BYTES_BIG_ENDIAN ? CODE_FOR_altivec_vmrglw_direct_v4si_be
+ : CODE_FOR_altivec_vmrghw_direct_v4si_le,
{8, 9, 10, 11, 24, 25, 26, 27, 12, 13, 14, 15, 28, 29, 30, 31}},
{OPTION_MASK_P8_VECTOR,
BYTES_BIG_ENDIAN ? CODE_FOR_p8_vmrgew_v4sf_direct
diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md
index e226a93bbe5..80f84e9b141 100644
--- a/gcc/config/rs6000/vsx.md
+++ b/gcc/config/rs6000/vsx.md
@@ -4688,12 +4688,14 @@ (define_expand "vsx_xxmrghw_<mode>"
(const_int 1) (const_int 5)])))]
"VECTOR_MEM_VSX_P (<MODE>mode)"
{
- rtx (*fun) (rtx, rtx, rtx);
- fun = BYTES_BIG_ENDIAN ? gen_altivec_vmrghw_direct_<mode>
- : gen_altivec_vmrglw_direct_<mode>;
- if (!BYTES_BIG_ENDIAN)
- std::swap (operands[1], operands[2]);
- emit_insn (fun (operands[0], operands[1], operands[2]));
+ if (BYTES_BIG_ENDIAN)
+ emit_insn (gen_altivec_vmrghw_direct_v4si_be (operands[0],
+ operands[1],
+ operands[2]));
+ else
+ emit_insn (gen_altivec_vmrglw_direct_v4si_le (operands[0],
+ operands[2],
+ operands[1]));
DONE;
}
[(set_attr "type" "vecperm")])
@@ -4708,12 +4710,14 @@ (define_expand "vsx_xxmrglw_<mode>"
(const_int 3) (const_int 7)])))]
"VECTOR_MEM_VSX_P (<MODE>mode)"
{
- rtx (*fun) (rtx, rtx, rtx);
- fun = BYTES_BIG_ENDIAN ? gen_altivec_vmrglw_direct_<mode>
- : gen_altivec_vmrghw_direct_<mode>;
- if (!BYTES_BIG_ENDIAN)
- std::swap (operands[1], operands[2]);
- emit_insn (fun (operands[0], operands[1], operands[2]));
+ if (BYTES_BIG_ENDIAN)
+ emit_insn (gen_altivec_vmrglw_direct_v4si_be (operands[0],
+ operands[1],
+ operands[2]));
+ else
+ emit_insn (gen_altivec_vmrghw_direct_v4si_le (operands[0],
+ operands[2],
+ operands[1]));
DONE;
}
[(set_attr "type" "vecperm")])
diff --git a/gcc/testsuite/g++.target/powerpc/pr106069.C b/gcc/testsuite/g++.target/powerpc/pr106069.C
new file mode 100644
index 00000000000..2cde9b821e3
--- /dev/null
+++ b/gcc/testsuite/g++.target/powerpc/pr106069.C
@@ -0,0 +1,120 @@
+/* { dg-options "-O -fno-tree-forwprop -maltivec" } */
+/* { dg-require-effective-target vmx_hw } */
+/* { dg-do run } */
+
+extern "C" void *
+memcpy (void *, const void *, unsigned long);
+typedef __attribute__ ((altivec (vector__))) unsigned native_simd_type;
+
+union
+{
+ native_simd_type V;
+ int R[4];
+} store_le_vec;
+
+struct S
+{
+ S () = default;
+ S (unsigned B0)
+ {
+ native_simd_type val{B0};
+ m_simd = val;
+ }
+ void store_le (unsigned int out[])
+ {
+ store_le_vec.V = m_simd;
+ unsigned int x0 = store_le_vec.R[0];
+ memcpy (out, &x0, 4);
+ }
+ S rotl (unsigned int r)
+ {
+ native_simd_type rot{r};
+ return __builtin_vec_rl (m_simd, rot);
+ }
+ void operator+= (S other)
+ {
+ m_simd = __builtin_vec_add (m_simd, other.m_simd);
+ }
+ void operator^= (S other)
+ {
+ m_simd = __builtin_vec_xor (m_simd, other.m_simd);
+ }
+ static void transpose (S &B0, S B1, S B2, S B3)
+ {
+ native_simd_type T0 = __builtin_vec_mergeh (B0.m_simd, B2.m_simd);
+ native_simd_type T1 = __builtin_vec_mergeh (B1.m_simd, B3.m_simd);
+ native_simd_type T2 = __builtin_vec_mergel (B0.m_simd, B2.m_simd);
+ native_simd_type T3 = __builtin_vec_mergel (B1.m_simd, B3.m_simd);
+ B0 = __builtin_vec_mergeh (T0, T1);
+ B3 = __builtin_vec_mergel (T2, T3);
+ }
+ S (native_simd_type x) : m_simd (x) {}
+ native_simd_type m_simd;
+};
+
+void
+foo (unsigned int output[], unsigned state[])
+{
+ S R00 = state[0];
+ S R01 = state[0];
+ S R02 = state[2];
+ S R03 = state[0];
+ S R05 = state[5];
+ S R06 = state[6];
+ S R07 = state[7];
+ S R08 = state[8];
+ S R09 = state[9];
+ S R10 = state[10];
+ S R11 = state[11];
+ S R12 = state[12];
+ S R13 = state[13];
+ S R14 = state[4];
+ S R15 = state[15];
+ for (int r = 0; r != 10; ++r)
+ {
+ R09 += R13;
+ R11 += R15;
+ R05 ^= R09;
+ R06 ^= R10;
+ R07 ^= R11;
+ R07 = R07.rotl (7);
+ R00 += R05;
+ R01 += R06;
+ R02 += R07;
+ R15 ^= R00;
+ R12 ^= R01;
+ R13 ^= R02;
+ R00 += R05;
+ R01 += R06;
+ R02 += R07;
+ R15 ^= R00;
+ R12 = R12.rotl (8);
+ R13 = R13.rotl (8);
+ R10 += R15;
+ R11 += R12;
+ R08 += R13;
+ R09 += R14;
+ R05 ^= R10;
+ R06 ^= R11;
+ R07 ^= R08;
+ R05 = R05.rotl (7);
+ R06 = R06.rotl (7);
+ R07 = R07.rotl (7);
+ }
+ R00 += state[0];
+ S::transpose (R00, R01, R02, R03);
+ R00.store_le (output);
+}
+
+unsigned int res[1];
+unsigned main_state[]{1634760805, 60878, 2036477234, 6,
+ 0, 825562964, 1471091955, 1346092787,
+ 506976774, 4197066702, 518848283, 118491664,
+ 0, 0, 0, 0};
+int
+main ()
+{
+ foo (res, main_state);
+ if (res[0] != 0x41fcef98)
+ __builtin_abort ();
+}
--
2.27.0
next prev parent reply other threads:[~2022-08-17 6:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-08 3:42 [PATCH] " Xionghu Luo
2022-08-09 3:01 ` Kewen.Lin
2022-08-09 22:03 ` Segher Boessenkool
2022-08-10 6:39 ` [PATCH v2] " Xionghu Luo
2022-08-10 17:07 ` Segher Boessenkool
2022-08-11 6:15 ` Xionghu Luo
2022-08-16 6:53 ` Kewen.Lin
2022-08-17 6:23 ` Xionghu Luo [this message]
2022-08-24 1:24 ` Ping: [PATCH v4] " Xionghu Luo
2023-01-18 9:11 ` Kewen.Lin
2023-02-09 2:15 ` Xionghu Luo
2023-02-09 15:52 ` Segher Boessenkool
2023-02-10 2:59 Xionghu Luo
2023-03-30 19:30 ` Segher Boessenkool
2023-03-31 2:47 ` Xionghu Luo
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