697de77339
Speed up instsimplify by about 10-15% by not bothering to retry
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InstructionSimplify on instructions that didn't change since the
last time round the loop.
llvm-svn: 122745
2011-01-03 10:50:04 +00:00
2c440fa403
Simplify this pass by using a depth-first iterator to ensure that all
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operands are visited before the instructions themselves.
llvm-svn: 122647
2010-12-31 17:49:05 +00:00
6cc7126ed9
Zap dead instructions harder.
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llvm-svn: 122645
2010-12-31 16:17:54 +00:00
3b8af41a3e
Visit instructions deterministically. Use a FIFO so as to approximately
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visit instructions before their uses, since InstructionSimplify does a
better job in that case. All this prompted by Frits van Bommel.
llvm-svn: 122343
2010-12-21 17:08:55 +00:00
e7cbb64ec0
If an instruction simplifies, try again to simplify any uses of it. This is
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not very important since the pass is only used for testing, but it does make
it more realistic. Suggested by Frits van Bommel.
llvm-svn: 122336
2010-12-21 16:12:03 +00:00
eaff500c7b
Oops, forgot to add the pass itself!
...
llvm-svn: 122265
2010-12-20 21:07:42 +00:00
Duncan Sands