[Bug target/106228] [13 regression] r13-1457-g10b502fb78351a causes bootstrap failure

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106228

--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> ---
Created attachment 53280
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53280&action=edit
Preprocessed test case

Here is the preprocessed source file that shows the ICE:

seurer@bns:/tmp$ /home/seurer/gcc/git/build/gcc-test/./gcc/xgcc
-B/home/seurer/gcc/git/build/gcc-test/./gcc/  -ftree-vectorize -O2 -S
matmul_i1.i 
during GIMPLE pass: vect
matmul_i1.i: In function 'matmul_i1':
matmul_i1.i:2700:1: internal compiler error: in vect_transform_loops, at
tree-vectorizer.cc:1032
 2700 | matmul_i1 (gfc_array_i1 * const restrict retarray,
      | ^~~~~~~~~
0x10ff7613 vect_transform_loops
        /home/seurer/gcc/git/gcc-test/gcc/tree-vectorizer.cc:1032
0x10ff7adf try_vectorize_loop_1
        /home/seurer/gcc/git/gcc-test/gcc/tree-vectorizer.cc:1153
0x10ff7adf try_vectorize_loop
        /home/seurer/gcc/git/gcc-test/gcc/tree-vectorizer.cc:1183
0x10ff8283 execute
        /home/seurer/gcc/git/gcc-test/gcc/tree-vectorizer.cc:1299