[Bug target/115741] New: [15] RISC-V: ICE in vectorizable_load, at tree-vect-stmts.cc:11524

[ewlu at rivosinc dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115741

            Bug ID: 115741
           Summary: [15] RISC-V: ICE in vectorizable_load, at
                    tree-vect-stmts.cc:11524
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ewlu at rivosinc dot com
  Target Milestone: ---

The following testcases are failing on linux rv32gcv with zvl512b and zvl1024b

FAIL: gcc.dg/vect/pr106081.c (internal compiler error: in vectorizable_load, at
tree-vect-stmts.cc:11524)
FAIL: gcc.dg/vect/pr106081.c -flto -ffat-lto-objects (internal compiler error:
in vectorizable_load, at tree-vect-stmts.cc:11524)

 during GIMPLE pass: vect
 dump file: pr106081.c.180t.vect
 ../gcc/gcc/testsuite/gcc.dg/vect/pr106081.c: In function 'test':
 ../gcc/gcc/testsuite/gcc.dg/vect/pr106081.c:19:1: internal compiler error: in
vectorizable_load, at tree-vect-stmts.cc:11524
 0x2d960e2 internal_error(char const*, ...)
      ../../../gcc/gcc/diagnostic-global-context.cc:491
 0xc6d390 fancy_abort(char const*, int, char const*)
      ../../../gcc/gcc/diagnostic.cc:1725
 0xb73086 vectorizable_load
      ../../../gcc/gcc/tree-vect-stmts.cc:11524
 0x167f185 vect_transform_stmt(vec_info*, _stmt_vec_info*,
gimple_stmt_iterator*, _slp_tree*, _slp_instance*)
      ../../../gcc/gcc/tree-vect-stmts.cc:13410
 0x16cb8fd vect_schedule_slp_node
      ../../../gcc/gcc/tree-vect-slp.cc:9815
 0x16e2eef vect_schedule_slp_node
      ../../../gcc/gcc/tree-vect-slp.cc:9602
 0x16e2eef vect_schedule_scc
      ../../../gcc/gcc/tree-vect-slp.cc:10051
 0x16e2e88 vect_schedule_scc
      ../../../gcc/gcc/tree-vect-slp.cc:10032
 0x16e2e88 vect_schedule_scc
      ../../../gcc/gcc/tree-vect-slp.cc:10032
 0x16e35e7 vect_schedule_slp(vec_info*, vec<_slp_instance*, va_heap, vl_ptr>
const&)
      ../../../gcc/gcc/tree-vect-slp.cc:10196
 0x16ad9d4 vect_transform_loop(_loop_vec_info*, gimple*)
      ../../../gcc/gcc/tree-vect-loop.cc:12151
 0x16f4351 vect_transform_loops
      ../../../gcc/gcc/tree-vectorizer.cc:1007
 0x16f4589 vect_transform_loops
      ../../../gcc/gcc/tree-vectorizer.cc:1040
 0x16f4ac3 try_vectorize_loop_1
      ../../../gcc/gcc/tree-vectorizer.cc:1153
 0x16f4ac3 try_vectorize_loop
      ../../../gcc/gcc/tree-vectorizer.cc:1183
 0x16f514c execute
      ../../../gcc/gcc/tree-vectorizer.cc:1299

godbolt (zvl512b): https://godbolt.org/z/P6fTzTbMs
godbolt (zvl1024b): https://godbolt.org/z/ej35fbaGv

I haven't bisected them to the specific commit yet