https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70327
Bug ID: 70327
Summary: ICE: in extract_insn, at recog.c:2287 (unrecognizable
insn) with -mavx512ifma and v4ti argument
Product: gcc
Version: 6.0
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: ---
Target: x86_64-pc-linux-gnu
Created attachment 38040
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38040&action=edit
reduced testcase
Compiler output:
$ gcc -mavx512ifma testcase.c
testcase.c: In function 'foo':
testcase.c:7:1: error: unrecognizable insn:
}
^
(insn 5 2 6 2 (set (mem:XI (pre_dec:DI (reg/f:DI 7 sp)) [1 S64 A512])
(mem/c:XI (reg/f:DI 81 virtual-incoming-args) [1 v+0 S64 A512]))
testcase.c:6 -1
(expr_list:REG_ARGS_SIZE (const_int 64 [0x40])
(nil)))
testcase.c:7:1: internal compiler error: in extract_insn, at recog.c:2287
0xb370f8 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.c:108
0xb3718d _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl-error.c:116
0xaeb813 extract_insn(rtx_insn*)
/repo/gcc-trunk/gcc/recog.c:2287
0x8a65eb instantiate_virtual_regs_in_insn
/repo/gcc-trunk/gcc/function.c:1582
0x8a65eb instantiate_virtual_regs
/repo/gcc-trunk/gcc/function.c:1950
0x8a65eb execute
/repo/gcc-trunk/gcc/function.c:1999
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-234350-checking-yes-rtl-df-nographite/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-234350-checking-yes-rtl-df-nographite
Thread model: posix
gcc version 6.0.0 20160319 (experimental) (GCC)
Tested revisions:
trunk r234350 - FAIL
5-branch r234210 - FAIL
4_9-branch r234243 - -mavx512ifma is not recognised
