Chris Lattner 7969ed3025 * Add better caching of data to avoid silly recusions
* Only check to see if uses of instructions can be converted for expressions... so we don't look at all of the uses of a constant.  This was making the code unnecessarily conservative

llvm-svn: 1218
2001-11-08 22:06:31 +00:00
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2001-11-02 07:46:26 +00:00
2001-11-08 20:55:05 +00:00
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