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* [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839
@ 2021-01-05 16:00 jakub at gcc dot gnu.org
2021-01-05 16:02 ` [Bug tree-optimization/98537] " jakub at gcc dot gnu.org
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0 siblings, 12 replies; 13+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-01-05 16:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
Bug ID: 98537
Summary: [11 Regression] ICE in emit_move_insn since r11-5839
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
Since r11-5839-g3a6e3ad38a17a03ee0139b49a0946e7b9ded1eb1 we ICE on the
following testcase on x86_64-linux with -O2:
typedef int V __attribute__((__vector_size__(32)));
typedef long W __attribute__((__vector_size__(32)));
W c, d;
struct B {};
B e;
struct C { W i; };
void foo (C);
C
operator== (B, B)
{
W r = (V)c == (V)d;
return {r};
}
__attribute__((target ("avx512vl"))) void
bar ()
{
B a;
foo (a == e);
}
entropy_coder.cc.ii: In function ‘void bar()’:
entropy_coder.cc.ii:13:12: internal compiler error: in emit_move_insn, at
expr.c:3820
13 | return {r};
| ^
0x11b183f emit_move_insn(rtx_def*, rtx_def*)
../../gcc/expr.c:3820
0x1e51e63 ix86_expand_int_vec_cmp(rtx_def**)
../../gcc/config/i386/i386-expand.c:4304
0x23f8be7 gen_vec_cmpv8siv8si(rtx_def*, rtx_def*, rtx_def*, rtx_def*)
../../gcc/config/i386/sse.md:3226
0x15acff0 rtx_insn* insn_gen_fn::operator()<rtx_def*, rtx_def*, rtx_def*,
rtx_def*>(rtx_def*, rtx_def*, rtx_def*, rtx_def*) const
../../gcc/recog.h:407
0x15aa82a maybe_gen_insn(insn_code, unsigned int, expand_operand*)
../../gcc/optabs.c:7787
0x15aab20 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
../../gcc/optabs.c:7818
0x15aabb4 expand_insn(insn_code, unsigned int, expand_operand*)
../../gcc/optabs.c:7849
0x15a6952 expand_vec_cmp_expr(tree_node*, tree_node*, rtx_def*)
../../gcc/optabs.c:6285
0x11d746d do_store_flag
../../gcc/expr.c:12373
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
@ 2021-01-05 16:02 ` jakub at gcc dot gnu.org
2021-01-06 2:10 ` crazylht at gmail dot com
` (10 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-01-05 16:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Target Milestone|--- |11.0
Last reconfirmed| |2021-01-05
Priority|P3 |P1
CC| |prathamesh3492 at gcc dot gnu.org
Ever confirmed|0 |1
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
2021-01-05 16:02 ` [Bug tree-optimization/98537] " jakub at gcc dot gnu.org
@ 2021-01-06 2:10 ` crazylht at gmail dot com
2021-01-06 3:01 ` crazylht at gmail dot com
` (9 subsequent siblings)
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From: crazylht at gmail dot com @ 2021-01-06 2:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
Mine.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
2021-01-05 16:02 ` [Bug tree-optimization/98537] " jakub at gcc dot gnu.org
2021-01-06 2:10 ` crazylht at gmail dot com
@ 2021-01-06 3:01 ` crazylht at gmail dot com
2021-01-07 5:10 ` [Bug target/98537] " crazylht at gmail dot com
` (8 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: crazylht at gmail dot com @ 2021-01-06 3:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Hongtao.liu from comment #1)
> Mine.
For vec_cmpmn, it goes into ix86_expand_fp_vec_cmp/ix86_expand_int_vec_cmp,
when cmp is integer mask, we need to use ix86_expand_sse_movcc instead of
emit_move_insn.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
` (2 preceding siblings ...)
2021-01-06 3:01 ` crazylht at gmail dot com
@ 2021-01-07 5:10 ` crazylht at gmail dot com
2021-01-07 9:40 ` prathamesh3492 at gcc dot gnu.org
` (7 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: crazylht at gmail dot com @ 2021-01-07 5:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> ---
BTW(In reply to Jakub Jelinek from comment #0)
> Since r11-5839-g3a6e3ad38a17a03ee0139b49a0946e7b9ded1eb1 we ICE on the
BTW, for testcase
typedef int v4si __attribute__ ((vector_size (16)));
v4si
foo (v4si b, v4si a)
{
v4si c = a == b;
return c;
}
r11-5839 failed to transform vcond to vec_cmp in gimple.
test.c.244t.optimized
v4si foo (v4si b, v4si a)
{
v4si c;
<bb 2> [local count: 1073741824]:
c_4 = .VCOND (a_2(D), b_3(D), { -1, -1, -1, -1 }, { 0, 0, 0, 0 }, 113);
return c_4;
}
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
` (3 preceding siblings ...)
2021-01-07 5:10 ` [Bug target/98537] " crazylht at gmail dot com
@ 2021-01-07 9:40 ` prathamesh3492 at gcc dot gnu.org
2021-01-07 10:32 ` crazylht at gmail dot com
` (6 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: prathamesh3492 at gcc dot gnu.org @ 2021-01-07 9:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #4 from prathamesh3492 at gcc dot gnu.org ---
Hi,
It seems to work on my machine for x86_64.
Compiling with -O3 (or -O2),
.optimized dump shows:
v4si foo (v4si b, v4si a)
{
v4si c;
vector(4) <signed-boolean:32> _1;
<bb 2> [local count: 1073741824]:
_1 = a_2(D) == b_3(D);
c_4 = VIEW_CONVERT_EXPR<v4si>(_1);
return c_4;
}
I tried on top of af362af18f405c34840d820143aa3a94f72fce4d.
Btw, on ARM it seems to "scalarize" the code,
.optimized dump shows:
_6 = BIT_FIELD_REF <a_2(D), 32, 0>;
_7 = BIT_FIELD_REF <b_3(D), 32, 0>;
_8 = _6 == _7 ? -1 : 0;
_9 = BIT_FIELD_REF <a_2(D), 32, 32>;
_10 = BIT_FIELD_REF <b_3(D), 32, 32>;
_11 = _9 == _10 ? -1 : 0;
_12 = BIT_FIELD_REF <a_2(D), 32, 64>;
_13 = BIT_FIELD_REF <b_3(D), 32, 64>;
_14 = _12 == _13 ? -1 : 0;
_15 = BIT_FIELD_REF <a_2(D), 32, 96>;
_16 = BIT_FIELD_REF <b_3(D), 32, 96>;
_17 = _15 == _16 ? -1 : 0;
c_4 = {_8, _11, _14, _17};
return c_4;
Thanks,
Prathamesh
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
` (4 preceding siblings ...)
2021-01-07 9:40 ` prathamesh3492 at gcc dot gnu.org
@ 2021-01-07 10:32 ` crazylht at gmail dot com
2021-01-08 10:50 ` prathamesh3492 at gcc dot gnu.org
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From: crazylht at gmail dot com @ 2021-01-07 10:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #5 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to prathamesh3492 from comment #4)
> Hi,
> It seems to work on my machine for x86_64.
> Compiling with -O3 (or -O2),
> .optimized dump shows:
>
> v4si foo (v4si b, v4si a)
> {
> v4si c;
> vector(4) <signed-boolean:32> _1;
>
> <bb 2> [local count: 1073741824]:
> _1 = a_2(D) == b_3(D);
> c_4 = VIEW_CONVERT_EXPR<v4si>(_1);
> return c_4;
>
> }
>
> I tried on top of af362af18f405c34840d820143aa3a94f72fce4d.
>
> Btw, on ARM it seems to "scalarize" the code,
> .optimized dump shows:
>
> _6 = BIT_FIELD_REF <a_2(D), 32, 0>;
> _7 = BIT_FIELD_REF <b_3(D), 32, 0>;
> _8 = _6 == _7 ? -1 : 0;
> _9 = BIT_FIELD_REF <a_2(D), 32, 32>;
> _10 = BIT_FIELD_REF <b_3(D), 32, 32>;
> _11 = _9 == _10 ? -1 : 0;
> _12 = BIT_FIELD_REF <a_2(D), 32, 64>;
> _13 = BIT_FIELD_REF <b_3(D), 32, 64>;
> _14 = _12 == _13 ? -1 : 0;
> _15 = BIT_FIELD_REF <a_2(D), 32, 96>;
> _16 = BIT_FIELD_REF <b_3(D), 32, 96>;
> _17 = _15 == _16 ? -1 : 0;
> c_4 = {_8, _11, _14, _17};
> return c_4;
>
> Thanks,
> Prathamesh
try -march=skylake-avx512(In reply to prathamesh3492 from comment #4)
> Hi,
> It seems to work on my machine for x86_64.
> Compiling with -O3 (or -O2),
> .optimized dump shows:
>
> v4si foo (v4si b, v4si a)
> {
> v4si c;
> vector(4) <signed-boolean:32> _1;
>
> <bb 2> [local count: 1073741824]:
> _1 = a_2(D) == b_3(D);
> c_4 = VIEW_CONVERT_EXPR<v4si>(_1);
> return c_4;
>
> }
>
> I tried on top of af362af18f405c34840d820143aa3a94f72fce4d.
>
> Btw, on ARM it seems to "scalarize" the code,
> .optimized dump shows:
>
> _6 = BIT_FIELD_REF <a_2(D), 32, 0>;
> _7 = BIT_FIELD_REF <b_3(D), 32, 0>;
> _8 = _6 == _7 ? -1 : 0;
> _9 = BIT_FIELD_REF <a_2(D), 32, 32>;
> _10 = BIT_FIELD_REF <b_3(D), 32, 32>;
> _11 = _9 == _10 ? -1 : 0;
> _12 = BIT_FIELD_REF <a_2(D), 32, 64>;
> _13 = BIT_FIELD_REF <b_3(D), 32, 64>;
> _14 = _12 == _13 ? -1 : 0;
> _15 = BIT_FIELD_REF <a_2(D), 32, 96>;
> _16 = BIT_FIELD_REF <b_3(D), 32, 96>;
> _17 = _15 == _16 ? -1 : 0;
> c_4 = {_8, _11, _14, _17};
> return c_4;
>
> Thanks,
> Prathamesh
It need avx512, try -march=skylake-avx512
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
` (5 preceding siblings ...)
2021-01-07 10:32 ` crazylht at gmail dot com
@ 2021-01-08 10:50 ` prathamesh3492 at gcc dot gnu.org
2021-01-14 11:14 ` crazylht at gmail dot com
` (4 subsequent siblings)
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From: prathamesh3492 at gcc dot gnu.org @ 2021-01-08 10:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #6 from prathamesh3492 at gcc dot gnu.org ---
Thanks for the suggestions, I could reproduce it now.
Input to isel is:
_1 = a_2(D) == b_3(D);
c_4 = VEC_COND_EXPR <_1, { -1, -1, -1, -1 }, { 0, 0, 0, 0 }>;
return c_4;
For the following check added in r11-5839:
if (integer_minus_onep (op1)
&& integer_zerop (op2)
&& TYPE_MODE (TREE_TYPE (lhs)) == TYPE_MODE (TREE_TYPE (op0))
&& expand_vec_cmp_expr_p (op0a_type, op0_type, tcode))
With -march=skylake-avx512, it seems the TYPE_MODE (TREE_TYPE (lhs))
and TYPE_MODE (TREE_TYPE (op0)) do not agree, and we bail out.
That happens because, lhs (c_4) mode is V4SI while op0 (_1) mode is QI.
Without -march=skylake-avx512, the type mode is V4SI for both lhs and op0.
With -march=skylake-avx512, c_4's type is vector(4) <signed-boolean:1>
and without it, the type is vector(4) <signed-boolean:32>.
Thanks,
Prathamesh
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
` (6 preceding siblings ...)
2021-01-08 10:50 ` prathamesh3492 at gcc dot gnu.org
@ 2021-01-14 11:14 ` crazylht at gmail dot com
2021-01-25 9:56 ` crazylht at gmail dot com
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From: crazylht at gmail dot com @ 2021-01-14 11:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #7 from Hongtao.liu <crazylht at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/pipermail/gcc-patches/2021-January/562904.html
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
` (7 preceding siblings ...)
2021-01-14 11:14 ` crazylht at gmail dot com
@ 2021-01-25 9:56 ` crazylht at gmail dot com
2021-02-05 2:01 ` cvs-commit at gcc dot gnu.org
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From: crazylht at gmail dot com @ 2021-01-25 9:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #8 from Hongtao.liu <crazylht at gmail dot com> ---
Created attachment 50045
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50045&action=edit
Fix ICE: Don't generate integer mask comparision for 128/256-bits vector when
op_true/op_false are NULL or constm1_rtx/const0_rtx [PR98537]
I'm retesting this patch which is supposed to fix all performance and
correctness regressions caused by r10-5250.
in ix86_expand_sse_cmp/ix86_expand_int_sse_cmp
- if (ix86_valid_mask_cmp_mode (cmp_ops_mode))
+ if (GET_MODE_SIZE (mode) == 64
+ || (ix86_valid_mask_cmp_mode (cmp_ops_mode)
+ /* When op_true and op_false is NULL, vector dest is required. */
+ && op_true && op_false
+ /* Gimple sometimes transforms vec_cmpmn to vcondmn with
+ op_true/op_false as constm1_rtx/const0_rtx.
+ Don't generate integer mask comparison then. */
+ && !((vector_all_ones_operand (op_true, GET_MODE (op_true))
+ && CONST0_RTX (GET_MODE (op_false)) == op_false)
+ || (vector_all_ones_operand (op_false, GET_MODE (op_false))
+ && CONST0_RTX (GET_MODE (op_true)) == op_true))))
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
` (8 preceding siblings ...)
2021-01-25 9:56 ` crazylht at gmail dot com
@ 2021-02-05 2:01 ` cvs-commit at gcc dot gnu.org
2021-02-07 1:14 ` crazylht at gmail dot com
2021-02-12 14:55 ` jakub at gcc dot gnu.org
11 siblings, 0 replies; 13+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-02-05 2:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:
https://gcc.gnu.org/g:8d0737d8f4b10bffe0411507ad2dc21ba7679883
commit r11-7116-g8d0737d8f4b10bffe0411507ad2dc21ba7679883
Author: liuhongt <hongtao.liu@intel.com>
Date: Thu Jan 7 10:15:33 2021 +0800
Fix ICE: Don't generate integer mask comparision for 128/256-bits vector
when op_true/op_false are NULL or constm1_rtx/const0_rtx [PR98537]
avx512vl-pr92686-vpcmp-{1,2,intelasm-1}.c are used to guard code
generation of integer mask comparison, but for vector comparison to
vector dest, integer mask comparison is disliked, so delete these
useless tests.
gcc/ChangeLog:
PR target/98537
* config/i386/i386-expand.c (ix86_expand_sse_cmp): Don't
generate integer mask comparison for 128/256-bits vector when
op_true/op_false is NULL_RTX or CONSTM1_RTX/CONST0_RTX. Also
delete redundant !maskcmp condition.
(ix86_expand_int_vec_cmp): Ditto but no redundant deletion
here.
(ix86_expand_sse_movcc): Delete definition of maskcmp, add the
condition directly to if (maskcmp), add extra check for
cmpmode, it should be MODE_INT.
(ix86_expand_fp_vec_cmp): Pass NULL to ix86_expand_sse_cmp's
parameters op_true/op_false.
(ix86_use_mask_cmp_p): New.
gcc/testsuite/ChangeLog:
PR target/98537
* g++.target/i386/avx512bw-pr98537-1.C: New test.
* g++.target/i386/avx512vl-pr98537-1.C: New test.
* g++.target/i386/avx512vl-pr98537-2.C: New test.
* gcc.target/i386/avx512vl-pr88547-1.c: Adjust testcase,
integer mask comparison should not be generated.
* gcc.target/i386/avx512vl-pr92686-vpcmp-1.c: Remove.
* gcc.target/i386/avx512vl-pr92686-vpcmp-2.c: Ditto.
* gcc.target/i386/avx512vl-pr92686-vpcmp-intelasm-1.c: Ditto.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
` (9 preceding siblings ...)
2021-02-05 2:01 ` cvs-commit at gcc dot gnu.org
@ 2021-02-07 1:14 ` crazylht at gmail dot com
2021-02-12 14:55 ` jakub at gcc dot gnu.org
11 siblings, 0 replies; 13+ messages in thread
From: crazylht at gmail dot com @ 2021-02-07 1:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
--- Comment #10 from Hongtao.liu <crazylht at gmail dot com> ---
Fixed in GCC11, not sure backport
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839
2021-01-05 16:00 [Bug tree-optimization/98537] New: [11 Regression] ICE in emit_move_insn since r11-5839 jakub at gcc dot gnu.org
` (10 preceding siblings ...)
2021-02-07 1:14 ` crazylht at gmail dot com
@ 2021-02-12 14:55 ` jakub at gcc dot gnu.org
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-02-12 14:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
.
^ permalink raw reply [flat|nested] 13+ messages in thread
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2021-01-07 9:40 ` prathamesh3492 at gcc dot gnu.org
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2021-01-08 10:50 ` prathamesh3492 at gcc dot gnu.org
2021-01-14 11:14 ` crazylht at gmail dot com
2021-01-25 9:56 ` crazylht at gmail dot com
2021-02-05 2:01 ` cvs-commit at gcc dot gnu.org
2021-02-07 1:14 ` crazylht at gmail dot com
2021-02-12 14:55 ` jakub at gcc dot gnu.org
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