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References: <bug-32183-682@http.gcc.gnu.org/bugzilla/>
Subject: [Bug tree-optimization/32183] Gcc 4.3 revision 125030 miscompiles 482.sphinx3 in SPEC CPU 2006
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From: "hjl at lucon dot org" <gcc-bugzilla@gcc.gnu.org>
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------- Comment #2 from hjl at lucon dot org  2007-06-01 23:09 -------
Is that OK to transform

      float sf;
      ...
      sf = 500 * sf;
      for (i = 0; i < ceplen; i++)
        sum[i] *= sf;

to

      for (i = 0; i < ceplen; i++)
        sum[i] = (sum[i]* 500)*sf;

You can certainly get the different results when sf is small and sum[i] is
large.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32183