https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96762
Bug ID: 96762
Summary: ICE in extract_insn, at recog.c:2294 (error:
unrecognizable insn)
Product: gcc
Version: 11.0
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: powerpc-*-linux-gnu
gcc-11.0.0-alpha20200823 snapshot (g:87c753ac241f25d222d46ba1ac66ceba89d6a200)
ICEs when compiling the following testcase w/ -mcpu=power10:
void
g4 (void)
{
char zj[] = "XXXXXXXXXXXXXXXX";
}
% powerpc-e300c3-linux-gnu-gcc-11.0.0 -mcpu=power10 -c gqga9ph8.c
gqga9ph8.c: In function 'g4':
gqga9ph8.c:5:1: error: unrecognizable insn:
5 | }
| ^
(insn 11 7 12 2 (set (reg:DI 123)
(ashift:DI (reg:DI 122)
(const_int 56 [0x38]))) "gqga9ph8.c":4:8 -1
(nil))
during RTL pass: vregs
gqga9ph8.c:5:1: internal compiler error: in extract_insn, at recog.c:2294
0x65b11b _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/rtl-error.c:108
0x65b13b _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/rtl-error.c:116
0x6596e9 extract_insn(rtx_insn*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/recog.c:2294
0xa87ee1 instantiate_virtual_regs_in_insn
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/function.c:1607
0xa87ee1 instantiate_virtual_regs
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/function.c:1977
0xa87ee1 execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20200823/work/gcc-11-20200823/gcc/function.c:2026
