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Hi All, I am planning to re-implement PassManager in llvm 2.0. The goal is to address http://nondot.org/sabre/LLVMNotes/Inliner-PassManager.txt and http://nondot.org/sabre/LLVMNotes/LoopOptimizerNotes.txt and other crazy ideas Chris has. Current implementation of PassManager is very complex. Initially I attempted to update it to address above notes but realized that redoing PassManager in simple way makes more sense, and Chris agreed. Instead of replacing current PassManager with new...

I did find this note from 2004 that references a LoopFusion pass, but I can't find it in the source code: http://nondot.org/sabre/LLVMNotes/LoopOptimizerNotes.txt A little background - I'm working on a SIMD runtime, where I have a scalar program but need to execute it on multiple independent data elements. One approach is to generate a loop for each operation, then rely on the optimizer to merge the loops so that I get good locality. Does th...

Is there a transformation in LLVM that will perform loop fusion? http://en.wikipedia.org/wiki/Loop_fusion I have the following program, in which I would like the 2 loops (iterating the same number of times) to be merged into 1, after which other nice optimizations such as mem2reg will apply: ; ModuleID = 'test' define void @vector([16 x float]* nocapture %arg, [16 x float]* nocapture

...working on this. If you're interested to work on it then it'd be great! - Devang On Sep 8, 2010, at 9:34 AM, Andrew Clinton wrote: > I did find this note from 2004 that references a LoopFusion pass, but I > can't find it in the source code: > http://nondot.org/sabre/LLVMNotes/LoopOptimizerNotes.txt > > A little background - I'm working on a SIMD runtime, where I have a > scalar program but need to execute it on multiple independent data > elements. One approach is to generate a loop for each operation, then > rely on the optimizer to merge the loops so that I get...

...tp://llvm.cs.uiuc.edu/ On Nov 7, 2006, at 11:32 AM, Devang Patel wrote: > Hi All, > > I am planning to re-implement PassManager in llvm 2.0. The goal is to > address > > http://nondot.org/sabre/LLVMNotes/Inliner-PassManager.txt and > http://nondot.org/sabre/LLVMNotes/LoopOptimizerNotes.txt > > and other crazy ideas Chris has. Current implementation of PassManager > is very complex. Initially I attempted to update it to address above > notes but realized that redoing PassManager in simple way makes more > sense, and Chris agreed. Instead of replacing current Pass...