[Bug rtl-optimization/23490] [3.4/4.0/4.1 Regression] Long compile time for array initializer with inlined constructor

["pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-20 02:26 -------
earth:~>time gcc -O1 t.cc -S
5.993u 0.056s 0:06.18 97.7%     0+0k 0+0io 0pf+0w
earth:~>time gcc -O1 t.cc -S -O2
11.529u 0.058s 0:11.84 97.7%    0+0k 0+0io 0pf+0w
earth:~>time gcc t.cc -S 
0.426u 0.012s 0:00.93 46.2%     0+0k 0+0io 0pf+0w

This is without checking disable.

Interesting 2.95.3 does not have the issue even with -fstrict-aliasing:
earth:~>time ~/ia32_linux_gcc2_95/bin/gcc t.cc -S
0.248u 0.019s 0:00.51 49.0%     0+0k 0+0io 0pf+0w
earth:~>time ~/ia32_linux_gcc2_95/bin/gcc t.cc -S -O1
1.259u 0.013s 0:01.63 77.3%     0+0k 0+0io 0pf+0w
earth:~>time ~/ia32_linux_gcc2_95/bin/gcc t.cc -S -O2
1.630u 0.021s 0:01.90 86.8%     0+0k 0+0io 0pf+0w
earth:~>time ~/ia32_linux_gcc2_95/bin/gcc t.cc -S -O2 -fstrict-aliasing
1.626u 0.018s 0:01.81 90.0%     0+0k 0+0io 0pf+0w

This has been a bug since 3.0.4.

It also happens on x86 too.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
  GCC build triplet|alphaev68-unknown-linux-gnu |
   GCC host triplet|alphaev68-unknown-linux-gnu |
 GCC target triplet|alphaev68-unknown-linux-gnu |
      Known to fail|                            |3.0.4 3.3.3 3.4.0 4.0.0
      Known to work|                            |2.95.3
   Last reconfirmed|0000-00-00 00:00:00         |2005-08-20 02:26:31
               date|                            |
            Summary|Long compile time for array |[3.4/4.0/4.1 Regression]
                   |initializer with inlined    |Long compile time for array
                   |constructor                 |initializer with inlined
                   |                            |constructor
   Target Milestone|---                         |4.0.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23490