[llvm-dev] Instruction scheduling done before or after register allocation

[Quentin Colombet via llvm-dev]

Hi,

> On Dec 16, 2015, at 8:02 AM, Iulia Stirb via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> Hi,
> 
> I have read the steps of code generation from here: The LLVM Target-Independent Code Generator — LLVM 3.8 documentation <http://llvm.org/docs/CodeGenerator.html#the-high-level-design-of-the-code-generator>
>  
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>  <http://llvm.org/docs/CodeGenerator.html#the-high-level-design-of-the-code-generator>	
>  
>  
>  
>  
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> The LLVM Target-Independent Code Generator — LLVM 3...
>  <http://llvm.org/docs/CodeGenerator.html#the-high-level-design-of-the-code-generator>Instruction Selection Instruction Selection is the process of translating LLVM code presented to the code generator into target-specific machine instructions.
> View on llvm.org <http://llvm.org/docs/CodeGenerator.html#the-high-level-design-of-the-code-generator>	
> Preview by Yahoo
>  
> 
> Could you please confirm that on actual implementation of LLVM's code generator, the instruction scheduling is done before register allocation?

This is correct.

Cheers,
Quentin

> 
> Many thanks,
> Iulia Stirb
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