[Bug middle-end/113163] [14 Regression][GCN] ICE in vect_peel_nonlinear_iv_init, at tree-vect-loop.cc:9420

["burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113163

--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Created attachment 56958
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56958&action=edit
Reduced testcase (

$ amdgcn-amdhsa-gcc -g -O2 inp5.i -march=gfx900

during GIMPLE pass: vect
inp5.i: In function '_l64a_r':
inp5.i:4:1: internal compiler error: in vect_peel_nonlinear_iv_init, at
tree-vect-loop.cc:9420
    4 | _l64a_r (struct _reent *rptr,
      | ^~~~~~~
0x94cc17 vect_peel_nonlinear_iv_init(gimple**, tree_node*, tree_node*,
tree_node*, vect_induction_op_type)
       
/net/build5-fossa-cs/scratch/tburnus/fsf.mainline.x86_64-linux-gnu-amdgcn/src/gcc-mainline/gcc/tree-vect-loop.cc:9420
0x148bb04 vect_update_ivs_after_vectorizer
        src/gcc-mainline/gcc/tree-vect-loop-manip.cc:2267
0x1498153 vect_do_peeling(_loop_vec_info*, tree_node*, tree_node*, tree_node**,
tree_node**, tree_node**, int, bool, bool, tree_node**)
        src/gcc-mainline/gcc/tree-vect-loop-manip.cc:3399
0x148714e vect_transform_loop(_loop_vec_info*, gimple*)
        src/gcc-mainline/gcc/tree-vect-loop.cc:11911
0x14c9544 vect_transform_loops
        src/gcc-mainline/gcc/tree-vectorizer.cc:1006
0x14c9bc3 try_vectorize_loop_1
        src/gcc-mainline/gcc/tree-vectorizer.cc:1152
0x14c9bc3 try_vectorize_loop
        src/gcc-mainline/gcc/tree-vectorizer.cc:1182
0x14ca224 execute
        src/gcc-mainline/gcc/tree-vectorizer.cc:1298

 * * *

Breakpoint 1, vect_peel_nonlinear_iv_init (stmts=0x7fffffffd698,
init_expr=0x7ffff7a56948, skip_niters=0x7ffff7bb8798, 
    step_expr=0x7ffff7a64ba0, induction_type=vect_step_op_shr)
    at src/gcc-mainline/gcc/tree-vect-loop.cc:9420
9420      gcc_assert (TREE_CODE (skip_niters) == INTEGER_CST);

(gdb) p debug_tree(skip_niters)
 <ssa_name 0x7ffff7bb8798
    type <integer_type 0x7ffff7b5e3f0 public unsigned SI
        size <integer_cst 0x7ffff7a64768 constant 32>
        unit-size <integer_cst 0x7ffff7a64780 constant 4>
        align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff7b5e3f0 precision:32 min <integer_cst 0x7ffff7b752d0 0> max <integer_cst
0x7ffff7a64b28 4294967295>>

    def_stmt GIMPLE_NOP
    version:54>
$2 = void