https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80206
Bug ID: 80206
Summary: ICE in extract_insn, at recog.c:2327
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: jakub at redhat dot com
Target Milestone: ---
Host: x86_64-linux-gnu
Target: x86_64-linux-gnu
Build: x86_64-linux-gnu
Starting from 4.9, where AVX512 was instroduced, we ICE:
$ cat /tmp/tmp6iytybcl.i
__attribute__ ((__vector_size__ (8 * sizeof (long)))) int a;
__attribute__ ((__vector_size__ (4 * sizeof (double)))) double b;
void c ()
{
(__attribute__ ((__vector_size__ (4 * sizeof (long)))) int)
__builtin_ia32_extractf64x4_mask ((__attribute__ ((__vector_size__ (
8 * sizeof (double)))) double) a,
1, b, 1);
}
$ gcc -ffloat-store /tmp/tmp6iytybcl.i -mavx512f
/tmp/tmp6iytybcl.i: In function ‘c’:
/tmp/tmp6iytybcl.i:9:1: error: unrecognizable insn:
}
^
(insn 12 11 16 2 (set (mem:V4DF (plus:DI (reg/f:DI 82 virtual-stack-vars)
(const_int -160 [0xffffffffffffff60])) [2 S32 A256])
(vec_merge:V4DF (vec_select:V4DF (reg:V8DF 89)
(parallel [
(const_int 4 [0x4])
(const_int 5 [0x5])
(const_int 6 [0x6])
(const_int 7 [0x7])
]))
(reg:V4DF 90)
(reg:QI 91))) "/tmp/tmp6iytybcl.i":6 -1
(nil))
/tmp/tmp6iytybcl.i:9:1: internal compiler error: in extract_insn, at
recog.c:2311
0xb97008 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc/rtl-error.c:108
0xb97039 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc/rtl-error.c:116
0xb645e1 extract_insn(rtx_insn*)
../../gcc/recog.c:2311
0x92e163 instantiate_virtual_regs_in_insn
../../gcc/function.c:1589
0x92e163 instantiate_virtual_regs
../../gcc/function.c:1957
0x92e163 execute
../../gcc/function.c:2006
