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memorydependencyanalysis
2017 Jun 13
2
Which PM preferred for llvm 4.0 out-of-source passes?
...e code in the in-source passes and
in the "opt" program to accommodate *both* the legacy PM and the new one.
The passes I'm maintaining have the following qualities:
- One provides AA
- Several of my passes depend on in-source passes: AliasAnalysis,
LoopInfoWrapperPass, and MemoryDependencyAnalysis
- Some are (conceptually) analysis passes, and some are (conceptually)
transform passes.
If necessary, I *could* convert my passes to be in-source, but that's
pretty suboptimal for me.
Thanks,
Christian
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2015 Jan 12
4
[LLVMdev] Separating loop nests based on profile information?
>
>
> Looking at what LLVM does, the failing on the PRE side is that our PRE/GVN
> models are not strong enough to handle this. I'm not sure at all why we
> think anything else is necessary.
>
By this i mean we don't actually perform real PRE for loads. It's a known
deficiency and one that does not require any duplicate heuristics to solve.
Right now we perform some