Chris Lattner 0c29b326fb Two fixes:
1. Fix a REALLY nasty cyclic replacement issue that Anshu discovered, causing
   nondeterminstic crashes and memory corruption.
2. For performance, don't go inserting constantexpr casts of GV pointers.

This should definitely go into 1.3

llvm-svn: 15568
2004-08-08 01:30:07 +00:00
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2004-08-08 01:30:07 +00:00
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