https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100722
Bug ID: 100722
Summary: ice in extract_insn, at recog.c:2770
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For this C code:
typedef char int8x4_t __attribute__((vector_size(4)));
int8x4_t stack_caller_x1;
stack_caller() {
stack_callee(stack_caller_x1, stack_caller_x1, stack_caller_x1,
stack_caller_x1, stack_caller_x1, stack_caller_x1,
stack_caller_x1);
}
recent trunk gcc does this:
$ /home/dcb/gcc/results/bin/gcc -c -w bug718.c
bug718.c:7:1: error: unrecognizable insn:
7 | }
| ^
(insn 13 12 14 2 (set (mem:V4QI (pre_modify:DI (reg/f:DI 7 sp)
(plus:DI (reg/f:DI 7 sp)
(const_int -8 [0xfffffffffffffff8]))) [0 S4 A32])
(reg:V4QI 82 [ stack_caller_x1.0_1 ])) "bug718.c":4:3 -1
(expr_list:REG_ARGS_SIZE (const_int 16 [0x10])
(nil)))
during RTL pass: vregs
bug718.c:7:1: internal compiler error: in extract_insn, at recog.c:2770
The problem first seems to occur sometime between 20210517
and 20210518. Git hashes are e91a17fe39c39e98 and 46ca31d65092e5af.
