Duncan Sands cf4bceba49 Add a rather pointless InstructionSimplify transform, inspired by recent constant
folding improvements: if P points to a type of size zero, turn "gep P, N" into "P".
More generally, if a gep index type has size zero, instcombine could replace the
index with zero, but that is not done here.

llvm-svn: 119942
2010-11-21 13:53:09 +00:00
2010-11-20 19:16:30 +00:00
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