https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112532
Bug ID: 112532
Summary: [14 Regression] ICE: in extract_insn, at recog.cc:2804
(unrecognizable insn: vec_duplicate:V4HI) with -O
-msse4
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 56586
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56586&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -msse4 testcase.c
testcase.c: In function 'foo0':
testcase.c:26:1: error: unrecognizable insn:
26 | }
| ^
(insn 58 56 59 2 (set (reg:V4HI 20 xmm0 [129])
(vec_duplicate:V4HI (reg:HI 22 xmm2 [123]))) "testcase.c":16:21 -1
(nil))
during RTL pass: split2
testcase.c:26:1: internal compiler error: in extract_insn, at recog.cc:2804
0x7f5c79 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.cc:108
0x7f5cf6 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl-error.cc:116
0x7e4b65 extract_insn(rtx_insn*)
/repo/gcc-trunk/gcc/recog.cc:2804
0x14168c4 extract_insn_cached(rtx_insn*)
/repo/gcc-trunk/gcc/recog.cc:2693
0x10af2a4 cleanup_subreg_operands(rtx_insn*)
/repo/gcc-trunk/gcc/final.cc:3054
0x1414088 split_insn
/repo/gcc-trunk/gcc/recog.cc:3419
0x141ad65 split_all_insns()
/repo/gcc-trunk/gcc/recog.cc:3487
0x141ae88 execute
/repo/gcc-trunk/gcc/recog.cc:4411
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.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-5443-20231114122339-gb9fd8399ec0-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-5443-20231114122339-gb9fd8399ec0-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231114 (experimental) (GCC)
