tree 6a697cff36c099f32c520d2e6b67cb043cc71875
parent 103f2eede3f0586449be1601afc0ea26275c4c10
author Nate Begeman <natebegeman@mac.com> 1098133702 +0000
committer Nate Begeman <natebegeman@mac.com> 1098133702 +0000

Initial implementation of the strength reduction for GEP instructions in
loops.  This optimization is not turned on by default yet, but may be run
with the opt tool's -loop-reduce flag.  There are many FIXMEs listed in the
code that will make it far more applicable to a wide range of code, but you
have to start somewhere :)

This limited version currently triggers on the following tests in the
MultiSource directory:
pcompress2: 7 times
cfrac: 5 times
anagram: 2 times
ks: 6 times
yacr2: 2 times


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17134 91177308-0d34-0410-b5e6-96231b3b80d8