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* [Bug c++/96273] New: ice in extract_insn, at recog.c:2294, unrecognizable insn:
@ 2020-07-21 20:34 dcb314 at hotmail dot com
2020-07-21 21:08 ` [Bug target/96273] " dcb314 at hotmail dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: dcb314 at hotmail dot com @ 2020-07-21 20:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96273
Bug ID: 96273
Summary: ice in extract_insn, at recog.c:2294, unrecognizable
insn:
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 48911
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48911&action=edit
gzipped C++ source code
The attached C++ code does this with today's gcc trunk:
splat.cpp:1637:1: error: unrecognizable insn:
(insn 1137 1136 1138 163 (set (mem/v:BLK (scratch:DI) [0 A8])
(unspec:BLK [
(mem/v:BLK (scratch:DI) [0 A8])
] UNSPEC_MFENCE)) -1
(nil))
during RTL pass: vregs
splat.cpp:1637:1: internal compiler error: in extract_insn, at recog.c:2294
0xef8b46 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../trunk.git/gcc/rtl-error.c:108
0xef8b6b _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../trunk.git/gcc/rtl-error.c:116
0xebf423 extract_insn(rtx_insn*)
../../trunk.git/gcc/recog.c:2294
Flags -O3 -march=native required. native is Piledriver. I'll
have a go at reducing the code.
This code used to work at date 20200719, so someone has broken
something in the last day or two.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/96273] ice in extract_insn, at recog.c:2294, unrecognizable insn:
2020-07-21 20:34 [Bug c++/96273] New: ice in extract_insn, at recog.c:2294, unrecognizable insn: dcb314 at hotmail dot com
@ 2020-07-21 21:08 ` dcb314 at hotmail dot com
2020-07-22 6:50 ` crazylht at gmail dot com
2020-07-22 6:52 ` ubizjak at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: dcb314 at hotmail dot com @ 2020-07-21 21:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96273
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Reduced C++ code:
int b, c, e;
int d[1];
void f() {
int a;
for (;;) {
c = 0;
for (; c <= 1000; b += 10, c++) {
a = 0;
for (; a < 10; a++)
if (b)
e += d[b] = e;
}
}
}
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/96273] ice in extract_insn, at recog.c:2294, unrecognizable insn:
2020-07-21 20:34 [Bug c++/96273] New: ice in extract_insn, at recog.c:2294, unrecognizable insn: dcb314 at hotmail dot com
2020-07-21 21:08 ` [Bug target/96273] " dcb314 at hotmail dot com
@ 2020-07-22 6:50 ` crazylht at gmail dot com
2020-07-22 6:52 ` ubizjak at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: crazylht at gmail dot com @ 2020-07-22 6:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96273
Hongtao.liu <crazylht at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ubizjak at gmail dot com
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
Caused by patch in PR95750?
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/96273] ice in extract_insn, at recog.c:2294, unrecognizable insn:
2020-07-21 20:34 [Bug c++/96273] New: ice in extract_insn, at recog.c:2294, unrecognizable insn: dcb314 at hotmail dot com
2020-07-21 21:08 ` [Bug target/96273] " dcb314 at hotmail dot com
2020-07-22 6:50 ` crazylht at gmail dot com
@ 2020-07-22 6:52 ` ubizjak at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: ubizjak at gmail dot com @ 2020-07-22 6:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96273
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|UNCONFIRMED |RESOLVED
--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Already fixed.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-07-22 6:52 UTC | newest]
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2020-07-21 20:34 [Bug c++/96273] New: ice in extract_insn, at recog.c:2294, unrecognizable insn: dcb314 at hotmail dot com
2020-07-21 21:08 ` [Bug target/96273] " dcb314 at hotmail dot com
2020-07-22 6:50 ` crazylht at gmail dot com
2020-07-22 6:52 ` ubizjak at gmail dot com
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