https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114264
Bug ID: 114264
Summary: RISC-V: ICE in riscv-vector-costs.cc of gcc master
branch
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: deminhan at gcc dot gnu.org
Target Milestone: ---
The following code can result in ICE:
-march=rv64gcv --param riscv-autovec-lmul=dynamic -O3
char *jpeg_difference7_input_buf;
void jpeg_difference7(int *diff_buf) {
unsigned width;
int samp, Rb;
while (--width) {
Rb = samp = *jpeg_difference7_input_buf;
*diff_buf++ = -(int)(samp + (long)Rb >> 1);
}
}
during GIMPLE pass: vect
testcase.i: In function 'jpeg_difference7':
testcase.i:2:6: internal compiler error: in compute_nregs_for_mode, at
config/riscv/riscv-vector-costs.cc:453
2 | void jpeg_difference7(int *diff_buf) {
| ^~~~~~~~~~~~~~~~
0xb2a30f compute_nregs_for_mode
../../../gcc/gcc/config/riscv/riscv-vector-costs.cc:453
0x17b19e6 max_number_of_live_regs
../../../gcc/gcc/config/riscv/riscv-vector-costs.cc:492
0x17b57a5 has_unexpected_spills_p
../../../gcc/gcc/config/riscv/riscv-vector-costs.cc:834
