https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61794
Bug ID: 61794
Summary: internal error: unrecognizable insn, from avx512
extract instruction
Product: gcc
Version: 4.10.0
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: agner at agner dot org
Created attachment 33117
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33117&action=edit
c++ file producing error
The attached file bug1.cpp generates internal error when compiling:
g++ -mavx512f bug1.cpp
g++ version: 4.9 and 4.10.0 20140706
binutils version: 2.24
Ubuntu version: 12.04.2 LTS
Error message:
==============
a@a-desktop:~/avx512$ g++ -mavx512f bug1.cpp
bug1.cpp: In member function ‘int32_t Vec16i::extract(uint32_t) const’:
bug1.cpp:59:5: error: unrecognizable insn:
}
^
(insn 29 28 30 8 (set (reg:V4SI 89 [ D.12727 ])
(vec_merge:V4SI (vec_select:V4SI (reg:V16SI 88 [ D.12726 ])
(parallel [
(const_int 0 [0])
(const_int 1 [0x1])
(const_int 2 [0x2])
(const_int 3 [0x3])
]))
(reg:V4SI 86 [ D.12724 ])
(reg:QI 113))) bug1.cpp:38 -1
(nil))
bug1.cpp:59:5: internal compiler error: in extract_insn, at recog.c:2204
0xb25c68 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../.././gcc/rtl-error.c:109
0xb25c99 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../.././gcc/rtl-error.c:117
0xaf609e extract_insn(rtx_def*)
../.././gcc/recog.c:2204
0x980803 instantiate_virtual_regs_in_insn
../.././gcc/function.c:1561
0x980803 instantiate_virtual_regs
../.././gcc/function.c:1932
0x980803 execute
../.././gcc/function.c:1983
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.
