[Bug middle-end/53533] [4.7 regression] loop unrolling as measured by Adobe's C++Benchmark is twice as slow versus 4.4-4.6

[matt at use dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53533

--- Comment #1 from Matt Hargett <matt at use dot net> 2012-05-31 00:55:36 UTC 
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Created attachment 27526
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27526
tarball containing buildable sources and binaries that demonstrate the severe
performance regression on amdfam10