[LLVMdev] make check-lit + grep escape characters
stpworld at narod.ru
Thu May 24 00:58:25 PDT 2012
Chandler Carruth wrote:
> On Thu, May 24, 2012 at 12:44 AM, Stepan Dyatkovskiy <stpworld at narod.ru
> <mailto:stpworld at narod.ru>> wrote:
> I just want to update test/Transforms/LowerSwitch/feature.ll that
> already uses grep.
> It uses grep + count, probably due to shorter construction.
> If you are touching such a test, please convert it to FileCheck. Use of
> 'grep' in tests is an endless source of problems, and we are lazily
> moving toward a world where only FileCheck is used.
> 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
> >> 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
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