[Bug rtl-optimization/16104] New: ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[Bug rtl-optimization/16104] New: ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[gcc at weidai dot com]

with this compiler:

$ gcc -v
Reading specs from /usr/local/lib/gcc/i686-pc-cygwin/3.4.0/specs
Configured with: ../gcc-3.4.0/configure
Thread model: single
gcc version 3.4.0

I'm getting ICE on some SSE2 code when using -O2. The same code compiles fine 
with optimizations turned off.

$ g++ -O2 -msse2 --save-temps gcctest.cpp
gcctest.cpp: In function `void P4Optimized_Multiply4(word*, const word*, const 
word*)':
gcctest.cpp:119: error: insn does not satisfy its constraints:
(insn 1691 1690 1488 0 (set (reg/v:V2SI 21 xmm0 [orig:419 <anonymous> ] [419])
        (mem:V2SI (plus:SI (reg/f:SI 6 bp)
                (const_int -184 [0xffffff48])) [0 S8 A8])) 499 
{movv2si_internal} (nil)
    (nil))
gcctest.cpp:119: internal compiler error: in reload_cse_simplify_operands, at 
postreload.c:378

Will attach gcctest.ii.

-- 
           Summary: ICE in reload_cse_simplify_operands, at postreload.c:378
                    with SSE2 code on -O2
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gcc at weidai dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[gcc at weidai dot com]

------- Additional Comments From gcc at weidai dot com  2004-06-20 18:54 -------
Created an attachment (id=6584)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6584&action=view)
test case


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[gcc at weidai dot com]

------- Additional Comments From gcc at weidai dot com  2004-06-20 18:55 -------
Created an attachment (id=6585)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6585&action=view)
un-preprocessed test case


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.4/3.5 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-06-20 19:22 -------
Reduced source:
typedef unsigned int word;
typedef int __m64 __attribute__ ((__mode__ (__V2SI__)));
typedef int __v2di __attribute__ ((mode (V2DI)));

void P4Optimized_Multiply41(word *C)
{
  __m64 s1;
  __v2di temp[7];
  word * temp819;

  temp819 = (word *)&temp[0];
  C[7] = (unsigned int)(int)(long long int)s1 + temp819[27];
  return;

}

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |ice-on-valid-code
      Known to fail|                            |3.4.0 3.5.0
      Known to work|                            |3.3.3
   Last reconfirmed|0000-00-00 00:00:00         |2004-06-20 19:22:09
               date|                            |
            Summary|ICE in                      |[3.4/3.5 regression] ICE in
                   |reload_cse_simplify_operands|reload_cse_simplify_operands
                   |, at postreload.c:378 with  |, at postreload.c:378 with
                   |SSE2 code on -O2            |SSE2 code on -O2
   Target Milestone|---                         |3.4.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.4/3.5 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[reichelt at gcc dot gnu dot org]

------- Additional Comments From reichelt at gcc dot gnu dot org  2004-06-25 09:30 -------
Here's an even shorter testcase which crashes with the 3.4 branch
and mainline:

===========================================================
typedef int __m64 __attribute__ ((__mode__ (__V2SI__)));

int foo()
{
    return (long long)(__m64)(0ll);
}
===========================================================

PR16104B.c: In function `foo':
PR16104B.c:5: internal compiler error: in convert_move, at expr.c:585
Please submit a full bug report, [etc.]

Before 3.4 the code was rejected (errorneously IMHO):

PR16104B.c: In function `foo':
PR16104B.c:5: error: can't convert between vector values of different size


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.4/3.5 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[steven at gcc dot gnu dot org]

------- Additional Comments From steven at gcc dot gnu dot org  2004-08-12 07:41 -------
Mainline (3.5.0-to-be) claims the following: 
t.c:1: warning: specifying vector types with __attribute__ ((mode)) is 
deprecated 
t.c:1: warning: use __attribute__ ((vector_size)) instead 
 
 
Tweaking the test case accordingly makes the failure go away: 
 
typedef int __m64 __attribute__ ((vector_size (2))); 
 
int foo() 
{ 
    return (long long)(__m64)(0ll); 
} 
 
t.c: In function `foo': 
t.c:5: error: can't convert between vector values of different size 
 
I don't know if the new error makes sense. 
 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.4/3.5 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-08-29 18:12 -------
Postponed until GCC 3.4.3.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.4/3.5 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-08-29 18:14 -------
Postponed until GCC 3.4.3.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.2                       |3.4.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.4/4.0 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-21 12:53 -------
Note the example which Steven gave is wrong, you want the vector size to 8 not 2 as 2 says only 2 
bytes not 8 bytes (64bits).
Also If we use vector_size rather than mode, we don't crash:
typedef int __m64 __attribute__ (( vector_size(8) ));
int foo()
{
    return (long long)(__m64)(0ll);
}


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|3.4.0 4.0                   |3.4.0 4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.4/4.0 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[belyshev at lubercy dot com]

------- Additional Comments From belyshev at lubercy dot com  2004-10-30 21:51 -------
*** Bug 18235 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |michalkr10 at poczta dot
                   |                            |onet dot pl


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.3/3.4 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[belyshev at lubercy dot com]

------- Additional Comments From belyshev at lubercy dot com  2004-10-30 22:16 -------
this is small testcase for original bug (ICE in postreload.c),
it fails in 3.3 and 3.4 but not in 4.0.0, use -Os -msse2 to repeat:
-----------------------------------------------------------------------------------------
void foo (int *j)
{
  int __attribute__ ((mode (V2SI))) k;
  long long t = (long long) k;
  j[0] = t;
}
-----------------------------------------------------------------------------------------

Note I cannot repeat this bug on 4.0.0 neither with this nor with Volker's
testcases, so I cleared 4.0 regression flag.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
 GCC target triplet|                            |i*86-*-* sse2
      Known to fail|3.4.0 4.0.0                 |3.3.3 3.3.4 3.4.0 3.4.1
                   |                            |3.4.2 3.4.3
      Known to work|3.3.3                       |4.0.0
   Last reconfirmed|2004-06-20 19:22:09         |2004-10-30 22:16:07
               date|                            |
            Summary|[3.4/4.0 regression] ICE in |[3.3/3.4 regression] ICE in
                   |reload_cse_simplify_operands|reload_cse_simplify_operands
                   |, at postreload.c:378 with  |, at postreload.c:378 with
                   |SSE2 code on -O2            |SSE2 code on -O2
   Target Milestone|3.4.3                       |3.4.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.3/3.4 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[reichelt at gcc dot gnu dot org]

------- Additional Comments From reichelt at gcc dot gnu dot org  2004-11-05 21:12 -------
Hmm. I still the the ICE with my example in comment #4.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.3/3.4 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[jakub at gcc dot gnu dot org]

------- Additional Comments From jakub at gcc dot gnu dot org  2005-01-13 15:28 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2005-01/msg00726.html>

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch
      Known to fail|3.3.3 3.3.4 3.4.0 3.4.1     |3.3.3 3.3.4 3.4.0 3.4.1
                   |3.4.2 3.4.3                 |3.4.2 3.4.3 4.0.0
      Known to work|4.0.0                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.3/3.4 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-04 08:50 -------
Subject: Bug 16104

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	jakub@gcc.gnu.org	2005-04-04 08:50:35

Modified files:
	gcc            : ChangeLog fold-const.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/execute: 20050316-1.c 

Log message:
	PR rtl-optimization/16104
	* fold-const.c (fold_unary): Fix folding of vector conversions.
	
	* gcc.c-torture/execute/20050316-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8107&r2=2.8108
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fold-const.c.diff?cvsroot=gcc&r1=1.553&r2=1.554
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5275&r2=1.5276
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/20050316-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.3/3.4 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-04 09:01 -------
Subject: Bug 16104

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	jakub@gcc.gnu.org	2005-04-04 09:01:02

Modified files:
	gcc            : ChangeLog fold-const.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/execute: 20050316-1.c 

Log message:
	PR rtl-optimization/16104
	* fold-const.c (fold_unary): Fix folding of vector conversions.
	
	* gcc.c-torture/execute/20050316-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.119&r2=2.7592.2.120
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fold-const.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.517.2.4&r2=1.517.2.5
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.93&r2=1.5084.2.94
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/20050316-1.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.3/3.4 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-30 16:20 -------
*** Bug 18238 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |belyshev at depni dot sinp
                   |                            |dot msu dot ru


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104

[Bug rtl-optimization/16104] [3.3/3.4 regression] ICE in reload_cse_simplify_operands, at postreload.c:378 with SSE2 code on -O2

[mmitchel at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.4                       |3.4.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16104