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* [Bug target/109825] New: [14 Regression] ICE in ix86_widen_mult_cost, at config/i386/i386.cc:20442 since r14-666-g608e7f3ab47fe7
@ 2023-05-12 10:32 jamborm at gcc dot gnu.org
  2023-05-12 11:22 ` [Bug target/109825] " rguenth at gcc dot gnu.org
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: jamborm at gcc dot gnu.org @ 2023-05-12 10:32 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109825

            Bug ID: 109825
           Summary: [14 Regression] ICE in ix86_widen_mult_cost, at
                    config/i386/i386.cc:20442 since
                    r14-666-g608e7f3ab47fe7
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jamborm at gcc dot gnu.org
                CC: uros at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux
            Target: x86_64-linux

Compiling our gcc/testsuite/gcc.dg/vect/slp-widen-mult-u8.c with -Os
-ftree-slp-vectorize -mavx512vl (or -Oz, for that matter) leads to an
ICE:

/tmp$ ~/gcc/small/inst/bin/gcc -Os -ftree-slp-vectorize -mavx512vl
~/gcc/small/src/gcc/testsuite/gcc.dg/vect/slp-widen-mult-u8.c -S
during GIMPLE pass: slp
/home/mjambor/gcc/small/src/gcc/testsuite/gcc.dg/vect/slp-widen-mult-u8.c: In
function ‘foo1’:
/home/mjambor/gcc/small/src/gcc/testsuite/gcc.dg/vect/slp-widen-mult-u8.c:15:1:
internal compiler error: in ix86_widen_mult_cost, at config/i386/i386.cc:20442
   15 | foo1(int len) {
      | ^~~~
0x82f95a ix86_widen_mult_cost
        /home/mjambor/gcc/small/src/gcc/config/i386/i386.cc:20442
0x82f95a ix86_vector_costs::add_stmt_cost(int, vect_cost_for_stmt,
_stmt_vec_info*, _slp_tree*, tree_node*, int, vect_cost_model_location)
        /home/mjambor/gcc/small/src/gcc/config/i386/i386.cc:23479
0x11fe9b2 add_stmt_cost(vector_costs*, int, vect_cost_for_stmt,
_stmt_vec_info*, _slp_tree*, tree_node*, int, vect_cost_model_location)
        /home/mjambor/gcc/small/src/gcc/tree-vectorizer.h:1779
0x11fe9b2 add_stmt_cost(vector_costs*, stmt_info_for_cost*)
        /home/mjambor/gcc/small/src/gcc/tree-vectorizer.h:1801
0x11fe9b2 vect_bb_vectorization_profitable_p
        /home/mjambor/gcc/small/src/gcc/tree-vect-slp.cc:6928
0x1202f3e vect_slp_region
        /home/mjambor/gcc/small/src/gcc/tree-vect-slp.cc:7441
0x1203eec vect_slp_bbs
        /home/mjambor/gcc/small/src/gcc/tree-vect-slp.cc:7611
0x12041cc vect_slp_function(function*)
        /home/mjambor/gcc/small/src/gcc/tree-vect-slp.cc:7712
0x120e3d1 execute
        /home/mjambor/gcc/small/src/gcc/tree-vectorizer.cc:1529


I have bisected this to r14-666-g608e7f3ab47fe7:

commit 608e7f3ab47fe746279c552c3574147aa3d8ee76 (HEAD)
Author: Uros Bizjak <ubizjak@gmail.com>
Date:   Wed May 10 22:40:53 2023 +0200

    i386: Add missing vector extend patterns [PR92658]

    Add missing insn pattern for v2qi -> v2si vector extend and named
    expanders to activate generation of vector extends to 8-byte and 4-byte
    vectors.

    gcc/ChangeLog:

            PR target/92658
            * config/i386/mmx.md (sse4_1_<code>v2qiv2si2): New insn pattern.
            (<insn>v4qiv4hi2): New expander.
            (<insn>v2hiv2si2): Ditto.
            (<insn>v2qiv2si2): Ditto.
            (<insn>v2qiv2hi2): Ditto.

    gcc/testsuite/ChangeLog:

            PR target/92658
            * gcc.target/i386/pr92658-sse4-4b.c: New test.
            * gcc.target/i386/pr92658-sse4-8b.c: New test.

^ permalink raw reply	[flat|nested] 9+ messages in thread
end of thread, other threads:[~2023-05-14 19:59 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-05-12 10:32 [Bug target/109825] New: [14 Regression] ICE in ix86_widen_mult_cost, at config/i386/i386.cc:20442 since r14-666-g608e7f3ab47fe7 jamborm at gcc dot gnu.org
2023-05-12 11:22 ` [Bug target/109825] " rguenth at gcc dot gnu.org
2023-05-12 11:35 ` ubizjak at gmail dot com
2023-05-12 11:40 ` ubizjak at gmail dot com
2023-05-12 11:49 ` ubizjak at gmail dot com
2023-05-13  0:03 ` pinskia at gcc dot gnu.org
2023-05-13  0:06 ` pinskia at gcc dot gnu.org
2023-05-13  8:31 ` ubizjak at gmail dot com
2023-05-14 19:59 ` ubizjak at gmail dot com

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