[Bug c/40172] [4.5 Regression] Revision 147596 breaks bootstrap

[meissner at linux dot vnet dot ibm dot com]

------- Comment #23 from meissner at linux dot vnet dot ibm dot com  2009-05-19 02:33 -------
Subject: Re:  [4.5 Regression]  Revision 147596 breaks bootstrap

On Tue, May 19, 2009 at 12:38:08AM -0000, hjl dot tools at gmail dot com wrote:
> 
> 
> ------- Comment #22 from hjl dot tools at gmail dot com  2009-05-19 00:38 -------
> Another patch is posted at
> 
> http://gcc.gnu.org/ml/gcc-patches/2009-05/msg01187.html
> 
> 
> -- 
> 
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40172
> 
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I still feel that if this patch is put in, we eventually will have the same
discussion, as the compiler gets smarter about flow control and propigation,
since semantically:

      if (test1)
        {
          if (test2)
            {
              /* ... */
            }
        }

is the same as:

        if (test1 && test2)
          {
            /* ... */
          }


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40172