https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115329
Bug ID: 115329
Summary: [15 Regression] ICE in extract_insn, at recog.cc:2812
since r15-930-ge715204f203d31
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jamborm at gcc dot gnu.org
CC: ubizjak at gmail dot com
Target Milestone: ---
Compiling the testcase (minimized from grub2):
int grub_swap_bytes32_x, grub_load_public_key___trans_tmp_1;
void grub_load_public_key() {
grub_load_public_key___trans_tmp_1 = __builtin_bswap32(grub_swap_bytes32_x);
}
with options:
-Os -m32 -S -fno-common -std=gnu99 -march=i386 test.c
leads to the following ICE since revision r15-930-ge715204f203d31
(Uros Bizjak: i386: Rewrite bswaphi2 handling [PR115102]):
test.c: In function ‘grub_load_public_key’:
test.c:4:1: error: unrecognizable insn:
4 | }
| ^
(insn 5 2 6 2 (set (reg:SI 102)
(ior:SI (and:SI (mem/c:SI (symbol_ref:SI ("grub_swap_bytes32_x") [flags
0x2] <var_decl 0x7fffbf410c60 grub_swap_bytes32_x>) [1 grub_swap_bytes32_x+0 S4
A32])
(const_int -65536 [0xffffffffffff0000]))
(lshiftrt:SI (bswap:SI (mem/c:SI (symbol_ref:SI
("grub_swap_bytes32_x") [flags 0x2] <var_decl 0x7fffbf410c60
grub_swap_bytes32_x>) [1 grub_swap_bytes32_x+0 S4 A32]))
(const_int 16 [0x10])))) "test.c":3:40 -1
(nil))
during RTL pass: vregs
test.c:4:1: internal compiler error: in extract_insn, at recog.cc:2812
0x807d4c _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/mjambor/gcc/mine/src/gcc/rtl-error.cc:108
0x807d68 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/mjambor/gcc/mine/src/gcc/rtl-error.cc:116
0x806289 extract_insn(rtx_insn*)
/home/mjambor/gcc/mine/src/gcc/recog.cc:2812
0xca0b90 instantiate_virtual_regs_in_insn
/home/mjambor/gcc/mine/src/gcc/function.cc:1612
0xca0b90 instantiate_virtual_regs
/home/mjambor/gcc/mine/src/gcc/function.cc:1995
0xca0b90 execute
/home/mjambor/gcc/mine/src/gcc/function.cc:2042
