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5 Commits

Author SHA1 Message Date
Dan Gohman
572645cf84 Reapply the new LoopStrengthReduction code, with compile time and 
bug fixes, and with improved heuristics for analyzing foreign-loop
addrecs.

This change also flattens IVUsers, eliminating the stride-oriented
groupings, which makes it easier to work with.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95975 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-12 10:34:29 +00:00
Dan Gohman
36a0947820 Eliminate more uses of llvm-as and llvm-dis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-08 23:54:48 +00:00
Evan Cheng
d9fb712403 Teach LSR sink to sink the immediate portion of the common expression back into uses if they fit in address modes of all the uses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65215 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-21 02:06:47 +00:00
Dale Johannesen
3b954815e1 Fix test to pass on Linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60614 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 22:38:21 +00:00
Dale Johannesen
203af58aea Make LoopStrengthReduce smarter about hoisting things out of 
loops when they can be subsumed into addressing modes.

Change X86 addressing mode check to realize that
some PIC references need an extra register.
(I believe this is correct for Linux, if not, I'm sure
someone will tell me.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60608 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 21:47:27 +00:00