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Date: Mon, 29 Aug 2005 13:19:00 -0000
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From: "rakdver at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/23622] Dom jump threading at -O1 confuses branch prediction
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X-SW-Source: 2005-08/txt/msg03305.txt.bz2
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------- Additional Comments From rakdver at gcc dot gnu dot org  2005-08-29 13:18 -------
Sorry, I have simplified the testcase and only looked at the dom1 dump.  You
need the following testcase to reproduce the problem (for the second loop):

void foo (void)
{
  int i;

  for (i = 0; i < 100; i++)
    something ();
  for (i = 0; i < 100; i++)
    something ();
}

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23622