llvm dev - May 2012 - [LLVMdev] make check-lit + grep escape characters

Hi all. I found that if you want to use grep with escape characters in 
lit, you should pass it within the double slash (\\). Since the first 
one is captured by python scripts and the second one by grep.
E.g. if you want to capture "grep icmp ule" you should pass
"grep icmp\\ ule"

So I'm going to commit the test with strings like this. How stable this 
feature in lit?

-Stepan.

On May 24, 2012, at 12:12 AM, Stepan Dyatkovskiy wrote:
> Hi all. I found that if you want to use grep with escape characters in 
> lit, you should pass it within the double slash (\\). Since the first 
> one is captured by python scripts and the second one by grep.
> E.g. if you want to capture "grep icmp ule" you should pass
> "grep icmp\\ ule"
> 
> So I'm going to commit the test with strings like this. How stable this
> feature in lit?
Why are you using grep and not FileCheck?

-eric

I just want to update test/Transforms/LowerSwitch/feature.ll that 
already uses grep.
It uses grep + count, probably due to shorter construction.

-Stepan.

Eric Christopher wrote:
>
> On May 24, 2012, at 12:12 AM, Stepan Dyatkovskiy wrote:
>
>> Hi all. I found that if you want to use grep with escape characters in
>> lit, you should pass it within the double slash (\\). Since the first
>> one is captured by python scripts and the second one by grep.
>> E.g. if you want to capture "grep icmp ule" you should pass
>> "grep icmp\\ ule"
>>
>> So I'm going to commit the test with strings like this. How stable
this
>> feature in lit?
>
> Why are you using grep and not FileCheck?
>
> -eric