[Bug target/66174] New: [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma

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* [Bug target/66174] New: [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma
@ 2015-05-16  6:43 zsojka at seznam dot cz
  2015-05-16 16:37 ` [Bug target/66174] " ubizjak at gmail dot com
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: zsojka at seznam dot cz @ 2015-05-16  6:43 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66174

            Bug ID: 66174
           Summary: [6 Regression] ICE: in extract_insn, at recog.c:2341
                    (unrecognizable insns) with -ftree-vectorize
                    -mavx512ifma
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---

Created attachment 35554
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35554&action=edit
reduced testcase

Compiler output:
$ gcc -O -ftree-vectorize -mavx512ifma testcase.c
testcase.c: In function 'foo':
testcase.c:27:1: error: unrecognizable insn:
 }
 ^
(insn 56 55 57 4 (set (reg:V16SI 155 [ D.2772 ])
        (vec_merge:V16SI (reg:V16SI 154 [ vect__9.11 ])
            (reg:V16SI 153 [ vect__9.10 ])
            (const_int 43690 [0xaaaa]))) testcase.c:16 -1
     (nil))
testcase.c:27:1: internal compiler error: in extract_insn, at recog.c:2341
0xae8418 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /mnt/svn/gcc-trunk/gcc/rtl-error.c:110
0xae84a8 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /mnt/svn/gcc-trunk/gcc/rtl-error.c:118
0xa9e513 extract_insn(rtx_insn*)
        /mnt/svn/gcc-trunk/gcc/recog.c:2341
0x867b47 instantiate_virtual_regs_in_insn
        /mnt/svn/gcc-trunk/gcc/function.c:1598
0x867b47 instantiate_virtual_regs
        /mnt/svn/gcc-trunk/gcc/function.c:1966
0x867b47 execute
        /mnt/svn/gcc-trunk/gcc/function.c:2015
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r223190 - ICE
5 r222437 - OK


^ permalink raw reply	[flat|nested] 4+ messages in thread

* [Bug target/66174] [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma
  2015-05-16  6:43 [Bug target/66174] New: [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma zsojka at seznam dot cz
@ 2015-05-16 16:37 ` ubizjak at gmail dot com
  2015-05-19 11:45 ` uros at gcc dot gnu.org
  2015-05-19 11:46 ` ubizjak at gmail dot com
  2 siblings, 0 replies; 4+ messages in thread
From: ubizjak at gmail dot com @ 2015-05-16 16:37 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66174

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-05-16
                 CC|                            |kyukhin at gcc dot gnu.org
   Target Milestone|---                         |6.0
     Ever confirmed|0                           |1

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Confirmed, adding CC.
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Subject: [Bug target/66174] [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma
Date: Sat, 16 May 2015 16:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66174

--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš Bizjak from comment #1)
> Confirmed, adding CC.

Also fails with -O -ftree-vectorize -mavx512f.
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Subject: [Bug target/66174] [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66174

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
The problem is in i386.c, function expand_vec_perm_blend, where:

  /* This matches five different patterns with the different modes.  */
  x = gen_rtx_VEC_MERGE (vmode, op1, op0, GEN_INT (mask));
  x = gen_rtx_SET (target, x);
  emit_insn (x);

AVX512F modes need to move mask to a mask register.
>From gcc-bugs-return-486443-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat May 16 17:38:48 2015
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Subject: [Bug target/66174] [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66174

--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
Untested patch:

--cut here--
Index: i386.c
===================================================================
--- i386.c      (revision 223231)
+++ i386.c      (working copy)
@@ -46780,12 +46780,14 @@ expand_vec_perm_blend (struct expand_vec_perm_d *d
   machine_mode vmode = d->vmode;
   unsigned i, mask, nelt = d->nelt;
   rtx target, op0, op1, x;
+  rtx maskop;
   rtx rperm[32], vperm;

   if (d->one_operand_p)
     return false;
   if (TARGET_AVX512F && GET_MODE_SIZE (vmode) == 64
-      && GET_MODE_SIZE (GET_MODE_INNER (vmode)) >= 4)
+      && (TARGET_AVX512BW
+         || GET_MODE_SIZE (GET_MODE_INNER (vmode)) >= 4))
     ;
   else if (TARGET_AVX2 && GET_MODE_SIZE (vmode) == 32)
     ;
@@ -46959,8 +46961,28 @@ expand_vec_perm_blend (struct expand_vec_perm_d *d
       gcc_unreachable ();
     }

+  switch (vmode)
+    {
+    case V8DFmode:
+    case V8DImode:
+      maskop = force_reg (QImode, gen_int_mode (mask, QImode));
+      break;
+    case V16SFmode:
+    case V16SImode:
+      maskop = force_reg (HImode, gen_int_mode (mask, HImode));
+      break;
+    case V32HImode:
+      maskop = force_reg (SImode, gen_int_mode (mask, SImode));
+      break;
+    case V64QImode:
+      maskop = force_reg (DImode, gen_int_mode (mask, DImode));
+      break;
+    default:
+      maskop = GEN_INT (mask);
+    }
+
   /* This matches five different patterns with the different modes.  */
-  x = gen_rtx_VEC_MERGE (vmode, op1, op0, GEN_INT (mask));
+  x = gen_rtx_VEC_MERGE (vmode, op1, op0, maskop);
   x = gen_rtx_SET (target, x);
   emit_insn (x);
   if (target != d->target)
--cut here--
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Subject: [Bug fortran/65903] [5/6 Regression] Line continuation followed by comment character in string fails to compile
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--- Comment #6 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sat May 16 17:44:15 2015
New Revision: 223248

URL: https://gcc.gnu.org/viewcvs?rev"3248&root=gcc&view=rev
Log:
2015-05-16  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/65903
        * io.c (format_lex): Change to NONSTRING when checking for
        possible doubled quote.
        * scanner.c (gfc_next_char_literal): Revert change from 64506
        and add a check for quotes and return.

Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/io.c
    trunk/gcc/fortran/scanner.c


^ permalink raw reply	[flat|nested] 4+ messages in thread

* [Bug target/66174] [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma
  2015-05-16  6:43 [Bug target/66174] New: [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma zsojka at seznam dot cz
  2015-05-16 16:37 ` [Bug target/66174] " ubizjak at gmail dot com
@ 2015-05-19 11:45 ` uros at gcc dot gnu.org
  2015-05-19 11:46 ` ubizjak at gmail dot com
  2 siblings, 0 replies; 4+ messages in thread
From: uros at gcc dot gnu.org @ 2015-05-19 11:45 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66174

--- Comment #6 from uros at gcc dot gnu.org ---
Author: uros
Date: Tue May 19 11:44:39 2015
New Revision: 223355

URL: https://gcc.gnu.org/viewcvs?rev=223355&root=gcc&view=rev
Log:
        PR target/66174
        * config/i386/i386.c (expand_vec_perm_blend): Enable HImode and
        QImode inner modes for TARGET_AVX512BW.  Force mask operand
        to a register for AVX512F modes.

testsuite/ChangeLog:

        PR target/66174
        * gcc.target/i386/pr66174.c: New test.


Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr66174.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/config/i386/i386.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog


^ permalink raw reply	[flat|nested] 4+ messages in thread

* [Bug target/66174] [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma
  2015-05-16  6:43 [Bug target/66174] New: [6 Regression] ICE: in extract_insn, at recog.c:2341 (unrecognizable insns) with -ftree-vectorize -mavx512ifma zsojka at seznam dot cz
  2015-05-16 16:37 ` [Bug target/66174] " ubizjak at gmail dot com
  2015-05-19 11:45 ` uros at gcc dot gnu.org
@ 2015-05-19 11:46 ` ubizjak at gmail dot com
  2 siblings, 0 replies; 4+ messages in thread
From: ubizjak at gmail dot com @ 2015-05-19 11:46 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66174

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|6.0                         |5.2

--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide916

Segher Boessenkool <segher at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Closing then.  Thanks for the report, Nikolay.


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