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* [Bug tree-optimization/97904] New: ICE with AArch64 SVE intrinsics
@ 2020-11-19 10:00 ktkachov at gcc dot gnu.org
  2020-11-19 10:00 ` [Bug tree-optimization/97904] " ktkachov at gcc dot gnu.org
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: ktkachov at gcc dot gnu.org @ 2020-11-19 10:00 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97904

            Bug ID: 97904
           Summary: ICE with AArch64 SVE intrinsics
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ktkachov at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

The testcase below ICEs for -march=armv8.2-a+sve

at -O0 the ICE is:
ice.c:19:1: internal compiler error: in tree_to_uhwi, at tree.c:7377
   19 | }
      | ^
0x136e268 tree_to_uhwi(tree_node const*)
        $SRC/gcc/tree.c:7377
0x13ed7b2 assemble_noswitch_variable
        $SRC/gcc/varasm.c:2104
0x13ed7b2 assemble_variable(tree_node*, int, int, int)
        $SRC/gcc/varasm.c:2321
0x13f0af1 varpool_node::assemble_decl()
        $SRC/gcc/varpool.c:587
0xb0a787 cgraph_order_sort::process()
        $SRC/gcc/cgraphunit.c:2548
0xb0b658 output_in_order
        $SRC/gcc/cgraphunit.c:2613
0xb0b658 symbol_table::compile()
        $SRC/gcc/cgraphunit.c:2831
0xb0de34 symbol_table::finalize_compilation_unit()
        $SRC/gcc/cgraphunit.c:3014
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

whereas at -O3 it is:
during GIMPLE pass: ccp
ice.c: In function ‘int main()’:
ice.c:19:1: internal compiler error: in maybe_canonicalize_mem_ref_addr, at
gimple-fold.c:4906
   19 | }
      | ^
0xcafec9 maybe_canonicalize_mem_ref_addr
        $SRC/gcc/gimple-fold.c:4906
0xcbaf32 fold_stmt_1
        $SRC/gcc/gimple-fold.c:4988
0xcc0a1d fold_stmt(gimple_stmt_iterator*, tree_node* (*)(tree_node*))
        $SRC/gcc/gimple-fold.c:5329
0x121a859 substitute_and_fold_dom_walker::before_dom_children(basic_block_def*)
        $SRC/gcc/tree-ssa-propagate.c:1070
0x1a8d7d9 dom_walker::walk(basic_block_def*)
        $SRC/gcc/domwalk.c:309
0x121b938 substitute_and_fold_engine::substitute_and_fold(basic_block_def*)
        $SRC/gcc/tree-ssa-propagate.c:1199
0x1158927 ccp_finalize
        $SRC/gcc/tree-ssa-ccp.c:1022
0x1158ec8 do_ssa_ccp
        $SRC/gcc/tree-ssa-ccp.c:2586
0x1158ec8 execute
        $SRC/gcc/tree-ssa-ccp.c:2629
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.


#include <arm_sve.h>
#include <array>

const std::array<svfloat32_t, 2> log_tab =
{
    {
        svdup_n_f32(-2.29561495781f),
        svdup_n_f32(-2.47071170807f),
    }
 };

int main(void)
{
    svbool_t pg;
    svfloat32_t x;
    auto A = svmla_f32_z(pg, log_tab[0], log_tab[1], x);

    return 0;
}

^ permalink raw reply	[flat|nested] 9+ messages in thread
end of thread, other threads:[~2020-12-02 18:42 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
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2020-11-19 10:00 [Bug tree-optimization/97904] New: ICE with AArch64 SVE intrinsics ktkachov at gcc dot gnu.org
2020-11-19 10:00 ` [Bug tree-optimization/97904] " ktkachov at gcc dot gnu.org
2020-11-19 13:06 ` acoplan at gcc dot gnu.org
2020-11-19 13:25 ` acoplan at gcc dot gnu.org
2020-11-19 13:42 ` acoplan at gcc dot gnu.org
2020-11-19 17:52 ` rsandifo at gcc dot gnu.org
2020-11-23  9:07 ` cvs-commit at gcc dot gnu.org
2020-12-02 16:21 ` cvs-commit at gcc dot gnu.org
2020-12-02 18:42 ` rsandifo at gcc dot gnu.org

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