llvm dev - Aug 2016 - Clang command line to invoke LLVM flags

Hi there,

I was wondering if there is a way to set llc flags in clang?
Like
llc -mattr=+abc
How to set this subtarget in clang?

Thanks,
Xiaochu
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(+cfe-dev for clang question)
> On Aug 8, 2016, at 3:57 PM, Xiaochu Liu via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
> Hi there,
> 
> I was wondering if there is a way to set llc flags in clang?
> 
In general no, in practice most development flags (accessible from opt/llc) are
available using -mllvm -flag=value
> Like
> llc -mattr=+abc 
> How to set this subtarget in clang?
> 
Target attributes are accessible using the cc1 flag "-target-feature”, the
equivalent to llc -mattr=“+abc” should be:

clang  -Xclang -target-feature -Xclang +abc 

— 
Mehdi

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Cool! Very helpful!

On Aug 8, 2016 4:08 PM, "Mehdi Amini" <mehdi.amini at apple.com>
wrote:
> (+cfe-dev for clang question)
>
> On Aug 8, 2016, at 3:57 PM, Xiaochu Liu via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
> Hi there,
>
> I was wondering if there is a way to set llc flags in clang?
>
> In general no, in practice most development flags (accessible from
> opt/llc) are available using -mllvm -flag=value
>
> Like
> llc -mattr=+abc
> How to set this subtarget in clang?
>
>
> Target attributes are accessible using the cc1 flag "-target-feature”,
the
> equivalent to llc -mattr=“+abc” should be:
>
> clang  -Xclang -target-feature -Xclang +abc
>
> —
> Mehdi
>
>
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