https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111947
--- Comment #1 from Patrick O'Neill <patrick at rivosinc dot com> ---
Testcase output on r14-4873-g02aa322c8c:
> ./riscv64-unknown-linux-gnu-gcc red.c -S -o test.S -O2
red.c:2:1: warning: return type defaults to 'int' [-Wimplicit-int]
2 | b() {
| ^
during RTL pass: vsetvl
red.c: In function 'b':
red.c:10:1: internal compiler error: RTL check: expected code 'reg', have
'const_int' in rhs_regno, at rtl.h:1934
10 | }
| ^
0x961683 rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int,
char const*)
../../../gcc/gcc/rtl.cc:770
0x99934c rhs_regno(rtx_def const*)
../../../gcc/gcc/rtl.h:1934
0x999dec rhs_regno(rtx_def const*)
../../../gcc/gcc/config/riscv/riscv-vsetvl.cc:2628
0x999dec pre_vsetvl::compute_lcm_local_properties()
../../../gcc/gcc/config/riscv/riscv-vsetvl.cc:2695
0x1734a89 pre_vsetvl::earliest_fuse_vsetvl_info()
../../../gcc/gcc/config/riscv/riscv-vsetvl.cc:2885
0x1735e29 pass_vsetvl::lazy_vsetvl()
../../../gcc/gcc/config/riscv/riscv-vsetvl.cc:3524
0x17361b7 pass_vsetvl::execute(function*)
../../../gcc/gcc/config/riscv/riscv-vsetvl.cc:3571
0x17361b7 pass_vsetvl::execute(function*)
../../../gcc/gcc/config/riscv/riscv-vsetvl.cc:3554
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
