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Add note about nuking Instruction::neg

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2001-07-07 08:33:39 +00:00
parent 6475bdfc71
commit 0aa1d5e02f
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docs/ChrisNotes.txt
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@ -1,3 +1,4 @@
* Remove Neg instruction. It is equilivent to sub 0, <v>
* Fix DCE to elminate br <c>, %L1, %L1 so that it can optimize the main of
fib.ll better. Currently I have to do this to get best results:
as < fib.ll | opt -inline -sccp -dce -sccp -dce |dis