https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114196
Bug ID: 114196 Summary: [13/14 Regression] Fixed length vector ICE: in vect_peel_nonlinear_iv_init, at tree-vect-loop.cc:9454 Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: patrick at rivosinc dot com Target Milestone: --- Created attachment 57589 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57589&action=edit -freport-bug output Testcase: unsigned a; int b; long *c; int main() { for (short d = 1; d < (short)5443215699099219 - 15932; d += 94 - 90) { b = ({ __typeof__(0) e = c[d]; e; }) ?: -c[d]; a *= 3; } } Backtrace: > /scratch/tc-testing/tc-feb-20/build-rv64gcv/bin/riscv64-unknown-linux-gnu-gcc > -march=rv64gcv_zvl256b -O3 --param=riscv-autovec-preference=fixed-vlmax red.c > -o red.out during GIMPLE pass: vect ./red.c: In function 'main': ./red.c:4:5: internal compiler error: in vect_peel_nonlinear_iv_init, at tree-vect-loop.cc:9454 4 | int main() { | ^~~~ 0xb04d35 vect_peel_nonlinear_iv_init(gimple**, tree_node*, tree_node*, tree_node*, vect_induction_op_type) ../../../gcc/gcc/tree-vect-loop.cc:9454 0x15e6c54 vect_update_ivs_after_vectorizer ../../../gcc/gcc/tree-vect-loop-manip.cc:2368 0x15f3ca7 vect_do_peeling(_loop_vec_info*, tree_node*, tree_node*, tree_node**, tree_node**, tree_node**, int, bool, bool, tree_node**) ../../../gcc/gcc/tree-vect-loop-manip.cc:3501 0x15e198e vect_transform_loop(_loop_vec_info*, gimple*) ../../../gcc/gcc/tree-vect-loop.cc:11934 0x1627a01 vect_transform_loops ../../../gcc/gcc/tree-vectorizer.cc:1006 0x1628173 try_vectorize_loop_1 ../../../gcc/gcc/tree-vectorizer.cc:1152 0x1628173 try_vectorize_loop ../../../gcc/gcc/tree-vectorizer.cc:1182 0x16287fc execute ../../../gcc/gcc/tree-vectorizer.cc:1298 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. Godbolt: https://godbolt.org/z/eeEan1hvv Tested/found using r14-9084-g61ab046a327 (not bisected) Found via fuzzer.