Chris Lattner c69e491575 fix a logic bug where we wouldn't promote single store allocas if the
stored value was a non-instruction value.  Doh.

This increase the # single store allocas from 8982 to 9026, and
speeds up mem2reg on the testcase in PR1432 from 2.17 to 2.13s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40813 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04 02:45:02 +00:00
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