llvm dev - Jun 2013 - [LLVMdev] -backend-option

Does anyone know what this option does in clang?

When I do a -### i see

"-backend-option" "-vectorize-loops"

I'm trying to recreate a problem in llc but when I save the intermediate 
file I'm unable to
get the same failure in llc alone.

Tia.

Reed

Hi Read,

this option is passed to the IR optimizer (both opt and llc are “the backend”
for clang).

It turns on  loop vectorization in the IR optimizer (PassManagerBuilder adds the
LoopVectorizer pass to the pass pipeline).

On Jun 10, 2013, at 4:42 PM, reed kotler <rkotler at mips.com> wrote:
> Does anyone know what this option does in clang?
> 
> When I do a -### i see
> 
> "-backend-option" "-vectorize-loops"
> 
> I'm trying to recreate a problem in llc but when I save the
intermediate file I'm unable to
> get the same failure in llc alone.
> 
> Tia.
> 
> Reed
> 
> 
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