https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112552
Bug ID: 112552
Summary: [14 Regression] ICE: in require, at machmode.h:313
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at rivosinc dot com
Target Milestone: ---
Created attachment 56596
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56596&action=edit
-freport-bug output
./bin/riscv64-unknown-linux-gnu-gcc -march=rv64gcv -O3 --param
riscv-autovec-preference=fixed-vlmax -S ../testcase.c -freport-bug
../testcase.c: In function 'h':
../testcase.c:7:15: warning: initialization of 'char *' from incompatible
pointer type 'void (*)()' [-Wincompatible-pointer-types]
7 | char *f = h;
| ^
../testcase.c:8:16: warning: comparison between pointer and integer
8 | e = b || g > 1 ? g : b;
| ^
during RTL pass: expand
../testcase.c:5:6: internal compiler error: in require, at machmode.h:313
5 | void h() {
| ^
0x9acb6e opt_mode<machine_mode>::require() const
../../../gcc/gcc/machmode.h:313
0x9acb6e opt_mode<machine_mode>::require() const
../../../gcc/gcc/machmode.h:311
0x9acb6e riscv_legitimize_move(machine_mode, rtx_def*, rtx_def*)
../../../gcc/gcc/config/riscv/riscv.cc:2543
0x19c8c62 gen_movqi(rtx_def*, rtx_def*)
../../../gcc/gcc/config/riscv/riscv.md:2132
0xd35d27 rtx_insn* insn_gen_fn::operator()<rtx_def*, rtx_def*>(rtx_def*,
rtx_def*) const
../../../gcc/gcc/recog.h:411
0xd35d27 emit_move_insn_1(rtx_def*, rtx_def*)
../../../gcc/gcc/expr.cc:4164
0xd36174 emit_move_insn(rtx_def*, rtx_def*)
../../../gcc/gcc/expr.cc:4334
0xd0aca1 force_reg(machine_mode, rtx_def*)
../../../gcc/gcc/explow.cc:683
0xd15581 store_fixed_bit_field_1
../../../gcc/gcc/expmed.cc:1320
0xd19700 store_fixed_bit_field
../../../gcc/gcc/expmed.cc:1245
0xd1a408 store_integral_bit_field
../../../gcc/gcc/expmed.cc:1103
0xd1a408 store_bit_field_1
../../../gcc/gcc/expmed.cc:884
0xd1a9bb store_bit_field(rtx_def*, poly_int<2u, unsigned long>, poly_int<2u,
unsigned long>, poly_int<2u, unsigned long>, poly_int<2u, unsigned long>,
machine_mode, rtx_def*, bool, bool)
../../../gcc/gcc/expmed.cc:1193
0xd4552e store_field
../../../gcc/gcc/expr.cc:7833
0xd439c7 store_constructor(tree_node*, rtx_def*, int, poly_int<2u, long>, bool)
../../../gcc/gcc/expr.cc:7588
0xd46398 expand_constructor
../../../gcc/gcc/expr.cc:8931
0xd320d7 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../../gcc/gcc/expr.cc:11219
0xd32857 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../../gcc/gcc/expr.cc:10828
0xe590f2 expand_normal(tree_node*)
../../../gcc/gcc/expr.h:316
0xe590f2 expand_vec_cond_mask_optab_fn
../../../gcc/gcc/internal-fn.cc:3111
Please submit a full bug report, with preprocessed source.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Preprocessed source stored into /tmp/ccOhxn1n.out file, please attach this to
your bugreport.
Testcase:
int a, c, d;
void (*b)();
void (*e)();
void g();
void h() {
for (; a; --a) {
char *f = h;
e = b || g > 1 ? g : b;
d |= !e;
*f ^= c;
}
}
Bisected to r14-4077-g86451305d8b
Attached -freport-bug output
