https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87083
Bug ID: 87083
Summary: ICE in extract_insn, at recog.c:2305 (error:
unrecognizable insn)
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: powerpcspe-*-linux-gnu*
gcc-9.0.0-alpha20180819 snapshot (r263652) ICEs when compiling the following
snippet w/ -O1 (-O2, -O3, -Ofast) -ftree-loop-vectorize -fno-tree-reassoc:
long long int ll;
int p7;
int
ox (int az, int th)
{
while (az < 1)
{
th ^= 1;
ll ^= p7;
++az;
}
return th;
}
% powerpc-e500v2-linux-gnuspe-gcc-9.0.0-alpha20180819 -O1 -ftree-loop-vectorize
-fno-tree-reassoc -c xuzg2b9u.c
xuzg2b9u.c: In function 'ox':
xuzg2b9u.c:15:1: error: unrecognizable insn:
15 | }
| ^
(insn 49 46 50 8 (set (subreg:SI (reg:DI 186) 0)
(xor:SI (subreg:SI (reg:DI 159 [ vect__4.16 ]) 0)
(subreg:SI (reg:V1DI 166 [ vect__4.13 ]) 0))) -1
(nil))
during RTL pass: vregs
xuzg2b9u.c:15:1: internal compiler error: in extract_insn, at recog.c:2305
0x61928f _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-9.0.0_alpha20180819/work/gcc-9-20180819/gcc/rtl-error.c:108
0x6192ad _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-9.0.0_alpha20180819/work/gcc-9-20180819/gcc/rtl-error.c:116
0x6177ca extract_insn(rtx_insn*)
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-9.0.0_alpha20180819/work/gcc-9-20180819/gcc/recog.c:2305
0x9f5392 instantiate_virtual_regs_in_insn
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-9.0.0_alpha20180819/work/gcc-9-20180819/gcc/function.c:1605
0x9f5392 instantiate_virtual_regs
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-9.0.0_alpha20180819/work/gcc-9-20180819/gcc/function.c:1975
0x9f5392 execute
/var/tmp/portage/cross-powerpc-e500v2-linux-gnuspe/gcc-9.0.0_alpha20180819/work/gcc-9-20180819/gcc/function.c:2024
