[Bug tree-optimization/44687] [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155 with -fprofile-generate

[Bug tree-optimization/44687] [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155 with -fprofile-generate

[zsojka at seznam dot cz]

------- Comment #1 from zsojka at seznam dot cz  2010-06-27 11:15 -------
Created an attachment (id=21015)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21015&action=view)
reduced testcase (from g++.dg/lto/20090221_0.C)

Command line:
$ g++ -O2 -fprofile-generate pr44687.C


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44687

[Bug tree-optimization/44687] New: [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155 with -fprofile-generate

[zsojka at seznam dot cz]

Command line:
$ g++ -O2 -fprofile-generate testcase.C

Compiler output:
$ g++ -O2 -fprofile-generate testcase.C
testcase.C: In function 'B bar(B)':
testcase.C:16:1: internal compiler error: in tree_nrv, at tree-nrv.c:155
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r161428 - crash
r161383 - crash
r161170 - OK


-- 
           Summary: [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155
                    with -fprofile-generate
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44687

[Bug tree-optimization/44687] [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155 with -fprofile-generate

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2010-06-27 23:55 -------
Works with:
GNU C++ (GCC) version 4.6.0 20100621 (experimental) [trunk revision 161061]
(x86_64-unknown-linux-gnu)

So it must be in the last week.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44687

[Bug tree-optimization/44687] [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155 with -fprofile-generate

[hjl dot tools at gmail dot com]

------- Comment #3 from hjl dot tools at gmail dot com  2010-06-28 00:21 -------
It is caused by revision 161382:

http://gcc.gnu.org/ml/gcc-cvs/2010-06/msg01300.html


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-06-28 00:21:54
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44687

[Bug tree-optimization/44687] [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155 with -fprofile-generate

[regehr at cs dot utah dot edu]

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------- Comment #4 from regehr at cs dot utah dot edu  2010-06-28 05:55 -------
This same ICE also happens w/o -fprofile-generate:

regehr@john-home:~/volatile/bugs/tmp318$ current-gcc -v
Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/home/regehr/z/compiler-install/gcc-r161425-install/libexec/gcc/i686-pc-linux-gnu/4.6.0/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: ../configure --with-libelf=/usr/local --enable-lto
--prefix=/home/regehr/z/compiler-install/gcc-r161425-install
--program-prefix=r161425- --enable-languages=c,c++
Thread model: posix
gcc version 4.6.0 20100626 (experimental) (GCC) 
regehr@john-home:~/volatile/bugs/tmp318$ current-gcc -O2 small.c
small.c: In function ‘func_72’:
small.c:24:1: internal compiler error: in tree_nrv, at tree-nrv.c:155
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
regehr@john-home:~/volatile/bugs/tmp318$ cat small.c
typedef int int32_t;
typedef unsigned char uint8_t;
struct S0
{
  uint8_t f0;
};
struct S0 *g_18[7][5][1][1] = {
};

struct S0 **g_17 = &g_18[0][3][0][0];
int32_t g_86;
struct S0 func_72 (uint8_t p_73, struct S0 p_74);

void int326 (struct S0 **p_67, int32_t p_68, int32_t * *const p_69,
        struct S0 *p_70)
{
  struct S0 l_95 = {
    -1L
  };
  func_72 (1L, func_72 (0, l_95));
}

struct S0
func_72 (uint8_t p_73, struct S0 p_74)
{
  int32_t *l_85 = &g_86;
  if (*l_85)
  lbl_94:*l_85 ^= 0;
  if (g_86)
    goto lbl_94;
  return **g_17;
}


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44687

[Bug tree-optimization/44687] [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155 with -fprofile-generate

[hubicka at gcc dot gnu dot org]

------- Comment #5 from hubicka at gcc dot gnu dot org  2010-06-28 15:51 -------
Subject: Bug 44687

Author: hubicka
Date: Mon Jun 28 15:51:25 2010
New Revision: 161500

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161500
Log:

        PR tree-optimization/44687
        * gcc.c-torture/compile/pr44687.c
        PR tree-optimization/44687
        * ipa-split.c (split_function): Use DECL_RESULT to store return value.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr44687.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-split.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44687

[Bug tree-optimization/44687] [4.6 Regression] ICE: in tree_nrv, at tree-nrv.c:155 with -fprofile-generate

[jakub at gcc dot gnu dot org]

------- Comment #6 from jakub at gcc dot gnu dot org  2010-07-02 13:22 -------
Fixed.


-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44687