llvm dev - Oct 2011 - [LLVMdev] Speculative paralellisation in LLVM compiler infrastructure!!!!!

Hi,

   I am involved in the task of achieving speculative paralellisation in
llvm. I have started my work by trying to see if a simple for loop can be
paralellised in llvm.. The problem is i want to know how to check if a
program is automatically parallelised when compiled with llvm or if
explicitly need to do it how can i go about paralellising a for loop using
llvm  compiler infrsatructure.how do i check for data dependency between
iterations using llvm.

Thanks ,

Raj
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Hi,

   I am involved in the task of achieving speculative paralellisation in
llvm. I have started my work by trying to see if a simple for loop can be
paralellised in llvm.. The problem is i want to know how to check if a
program is automatically parallelised when compiled with llvm or if
explicitly need to do it how can i go about paralellising a for loop using
llvm  compiler infrsatructure.how do i check for data dependency between
iterations using llvm.

Thanks ,

Raj
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On 11 October 2011 07:59, Muthu Raj <sameer.muthu9 at gmail.com> wrote:
>
> Hi,
>
>    I am involved in the task of achieving speculative paralellisation in
> llvm. I have started my work by trying to see if a simple for loop can be
> paralellised in llvm.. The problem is i want to know how to check if a
> program is automatically parallelised when compiled with llvm or if
> explicitly need to do it how can i go about paralellising a for loop using
> llvm  compiler infrsatructure.how do i check for data dependency between
> iterations using llvm.
>
LLVM does not automatically parallelize loops. Loop dependencies are
analyzed by the LoopDependenceAnalysis, which is almost entirely stubs (ie.,
no implementation). Patches to implement it would be a good start!

Nick
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