https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110021
Bug ID: 110021
Summary: [14 Regression] ICE in extract_insn, at recog.cc:2791
on x86_64 with -mavx512vl since
r14-1253-g0368fc54bc11f1
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jamborm at gcc dot gnu.org
CC: ubizjak at gmail dot com
Target Milestone: ---
Host: x86_64-linux
Target: x86_64-linux
Running (using gcc master revision r14-1355-g6c2b2de098af7d):
$ ~/gcc/trunk/inst/bin/gcc
~/gcc/trunk/src/gcc/testsuite/gcc.target/i386/sse2-shiftqihi-constant-2.c
-mavx512vl -S
Results in ICE:
/home/mjambor/gcc/trunk/src/gcc/testsuite/gcc.target/i386/sse2-shiftqihi-constant-2.c:61:1:
error: unrecognizable insn:
61 | }
| ^
(insn 1139 1138 1140 129 (set (reg:V16QI 248 [ _167 ])
(truncate:V16QI (reg:V16HI 552)))
"/home/mjambor/gcc/trunk/src/gcc/testsuite/gcc.target/i386/sse2-shiftqihi-constant-2.c":60:3
discrim 4 -1
(expr_list:REG_EQUAL (ashift:V16QI (reg:V16QI 247 [ _166 ])
(reg:SI 548))
(nil)))
during RTL pass: vregs
/home/mjambor/gcc/trunk/src/gcc/testsuite/gcc.target/i386/sse2-shiftqihi-constant-2.c:61:1:
internal compiler error: in extract_insn, at recog.cc:2791
0xc03e5d _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/mjambor/gcc/trunk/src/gcc/rtl-error.cc:108
0xc03e79 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/mjambor/gcc/trunk/src/gcc/rtl-error.cc:116
0x14764a2 extract_insn(rtx_insn*)
/home/mjambor/gcc/trunk/src/gcc/recog.cc:2791
0x1078ee2 instantiate_virtual_regs_in_insn
/home/mjambor/gcc/trunk/src/gcc/function.cc:1611
0x107a53c instantiate_virtual_regs
/home/mjambor/gcc/trunk/src/gcc/function.cc:1984
0x107a60c execute
/home/mjambor/gcc/trunk/src/gcc/function.cc:2033
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Bisecting script claims that this has started with:
commit 0368fc54bc11f15bfa0ed9913fd0017815dfaa5d
Author: Uros Bizjak <ubiz...@gmail.com>
Date: Fri May 26 07:30:24 2023 +0200
i386: Do not disable call to ix86_expand_vecop_qihi2
gcc/ChangeLog:
* config/i386/i386-expand.cc (ix86_expand_vecop_qihi):
Do not disable call to ix86_expand_vecop_qihi2.
