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* [Bug target/101788] New: [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857
@ 2021-08-05 8:21 marxin at gcc dot gnu.org
2021-08-05 8:22 ` [Bug target/101788] " marxin at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: marxin at gcc dot gnu.org @ 2021-08-05 8:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101788
Bug ID: 101788
Summary: [12 Regression] ICE in extract_bit_field_1 at
gcc/expmed.c:1857
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: rsandifo at gcc dot gnu.org
Target Milestone: ---
Must be a recent regression:
$ aarch64-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/aarch64/sve/ext_2.c -O3
-c
during RTL pass: expand
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/aarch64/sve/ext_2.c: In
function ‘foo’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/aarch64/sve/ext_2.c:13:5:
internal compiler error: Segmentation fault
13 | x = __builtin_shuffle (y, y, (vnx4si) { 1, 2, 3, 4, 5, 6, 7, 8 });
| ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0xbfecdf crash_signal
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/toplev.c:328
0x7ffff786239f ???
../sysdeps/unix/sysv/linux/sigaction.c:10
0x8d926c extract_integral_bit_field
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expmed.c:1984
0x8d926c extract_bit_field_1
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expmed.c:1857
0x8d9460 extract_bit_field(rtx_def*, poly_int<2u, unsigned long>, poly_int<2u,
unsigned long>, int, rtx_def*, machine_mode, machine_mode, bool, rtx_def**)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expmed.c:2129
0x8ee982 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:11374
0x8ef4be expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:8713
0x8ef4be expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:10484
0x8fe005 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:8713
0x8fe005 expand_normal
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.h:307
0x8fe005 store_field
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:7439
0x8fd4f6 store_constructor
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:7289
0x8fec81 expand_constructor
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:8634
0x8eed72 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:10819
0x8ef4be expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:8713
0x8ef4be expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:10484
0x8f926e expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:8713
0x8f926e store_expr(tree_node*, rtx_def*, int, bool, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:6064
0x8fa789 expand_assignment(tree_node*, tree_node*, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/expr.c:5796
0x7ed16a expand_gimple_stmt_1
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/cfgexpand.c:3945
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/101788] [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857
2021-08-05 8:21 [Bug target/101788] New: [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 marxin at gcc dot gnu.org
@ 2021-08-05 8:22 ` marxin at gcc dot gnu.org
2021-08-11 8:25 ` [Bug target/101788] [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 since r12-2728-g2724d1bba6b36451404811fba3244f8897717ef3 marxin at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: marxin at gcc dot gnu.org @ 2021-08-05 8:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101788
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |12.0
Last reconfirmed| |2021-08-05
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Target Milestone|--- |12.0
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/101788] [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 since r12-2728-g2724d1bba6b36451404811fba3244f8897717ef3
2021-08-05 8:21 [Bug target/101788] New: [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 marxin at gcc dot gnu.org
2021-08-05 8:22 ` [Bug target/101788] " marxin at gcc dot gnu.org
@ 2021-08-11 8:25 ` marxin at gcc dot gnu.org
2021-08-11 9:05 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: marxin at gcc dot gnu.org @ 2021-08-11 8:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101788
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[12 Regression] ICE in |[12 Regression] ICE in
|extract_bit_field_1 at |extract_bit_field_1 at
|gcc/expmed.c:1857 |gcc/expmed.c:1857 since
| |r12-2728-g2724d1bba6b364514
| |04811fba3244f8897717ef3
CC| |rguenth at gcc dot gnu.org
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with Richi's r12-2728-g2724d1bba6b36451404811fba3244f8897717ef3.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/101788] [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 since r12-2728-g2724d1bba6b36451404811fba3244f8897717ef3
2021-08-05 8:21 [Bug target/101788] New: [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 marxin at gcc dot gnu.org
2021-08-05 8:22 ` [Bug target/101788] " marxin at gcc dot gnu.org
2021-08-11 8:25 ` [Bug target/101788] [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 since r12-2728-g2724d1bba6b36451404811fba3244f8897717ef3 marxin at gcc dot gnu.org
@ 2021-08-11 9:05 ` rguenth at gcc dot gnu.org
2021-08-11 12:10 ` rguenth at gcc dot gnu.org
2021-08-11 14:25 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-08-11 9:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101788
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Status|NEW |ASSIGNED
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I will have a look.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/101788] [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 since r12-2728-g2724d1bba6b36451404811fba3244f8897717ef3
2021-08-05 8:21 [Bug target/101788] New: [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 marxin at gcc dot gnu.org
` (2 preceding siblings ...)
2021-08-11 9:05 ` rguenth at gcc dot gnu.org
@ 2021-08-11 12:10 ` rguenth at gcc dot gnu.org
2021-08-11 14:25 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-08-11 12:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101788
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
What forwprop does is
<bb 2> [local count: 1073741824]:
__asm__ __volatile__("" : "=w" y);
- y.0_1 = y;
- _6 = BIT_FIELD_REF <y.0_1, 32, 32>;
- _7 = BIT_FIELD_REF <y.0_1, 32, 64>;
- _8 = BIT_FIELD_REF <y.0_1, 32, 96>;
- _9 = BIT_FIELD_REF <y.0_1, 32, 128>;
- _10 = BIT_FIELD_REF <y.0_1, 32, 160>;
- _11 = BIT_FIELD_REF <y.0_1, 32, 192>;
- _12 = BIT_FIELD_REF <y.0_1, 32, 224>;
- _13 = BIT_FIELD_REF <y.0_1, 32, 0>;
+ _13 = BIT_FIELD_REF <y, 32, 0>;
+ _12 = BIT_FIELD_REF <y, 32, 224>;
+ _11 = BIT_FIELD_REF <y, 32, 192>;
+ _10 = BIT_FIELD_REF <y, 32, 160>;
+ _9 = BIT_FIELD_REF <y, 32, 128>;
+ _8 = BIT_FIELD_REF <y, 32, 96>;
+ _7 = BIT_FIELD_REF <y, 32, 64>;
+ _6 = BIT_FIELD_REF <y, 32, 32>;
_2 = {_6, _7, _8, _9, _10, _11, _12, _13};
x = _2;
so we're processing a DECL_HARD_REGISTER here I think and we must avoid
touching / changing accesses to such. I am testing a patch.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/101788] [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 since r12-2728-g2724d1bba6b36451404811fba3244f8897717ef3
2021-08-05 8:21 [Bug target/101788] New: [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 marxin at gcc dot gnu.org
` (3 preceding siblings ...)
2021-08-11 12:10 ` rguenth at gcc dot gnu.org
@ 2021-08-11 14:25 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-08-11 14:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101788
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed. With the following (I mistyped the PR number in the 2nd occurance...)
commit 2cb02e065ff015a69db918eb545a00cd6edf0194 (origin/master, origin/HEAD)
Author: Richard Biener <rguenther@suse.de>
Date: Wed Aug 11 14:10:52 2021 +0200
target/101788 - avoid decomposing hard-register "loads"
This avoids decomposing hard-register accesses that masquerade as
loads.
2021-08-11 Richard Biener <rguenther@suse.de>
PR target/101877
* tree-ssa-forwprop.c (pass_forwprop::execute): Do not decompose
hard-register accesses.
^ permalink raw reply [flat|nested] 6+ messages in thread
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2021-08-05 8:21 [Bug target/101788] New: [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 marxin at gcc dot gnu.org
2021-08-05 8:22 ` [Bug target/101788] " marxin at gcc dot gnu.org
2021-08-11 8:25 ` [Bug target/101788] [12 Regression] ICE in extract_bit_field_1 at gcc/expmed.c:1857 since r12-2728-g2724d1bba6b36451404811fba3244f8897717ef3 marxin at gcc dot gnu.org
2021-08-11 9:05 ` rguenth at gcc dot gnu.org
2021-08-11 12:10 ` rguenth at gcc dot gnu.org
2021-08-11 14:25 ` rguenth at gcc dot gnu.org
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