[LLVMdev] [llvm-commits] [PATCH] A "very verbose" mode for FileCheck

Jim Grosbach grosbach at apple.com
Thu Jan 17 10:20:51 PST 2013

On Jan 17, 2013, at 9:57 AM, Dmitri Gribenko <gribozavr at gmail.com> wrote:

> On Thu, Jan 17, 2013 at 7:51 PM, Sean Silva <silvas at purdue.edu> wrote:
>> On Thu, Jan 17, 2013 at 8:36 AM, Dmitri Gribenko <gribozavr at gmail.com> wrote:
>>> We have to options:
>>> (a) replace 'FileCheck' with '%FileCheck' in all tests, and teach
>>> 'lit' to replace '%FileCheck' with 'FileCheck --dump-input-on-error';
>>> (b) teach 'lit' to replace a plain 'FileCheck'.
>>> The first approach seems cleaner to developers who read and write
>>> tests (it suggests that they are invoking some "macro" -- but does
>>> that matter?)  The second approach is much easier to implement since
>>> tests will be unchanged.
>> IMO the biggest issue with (a) is that developers will continue to use
>> `FileCheck` instead of `%FileCheck`. So IMO (a) should only be
>> implemented if simultaneously there is a change that makes just plain
>> `FileCheck` an error.
> I think that within a month this knowledge will be propagated to all developers.

I'd like to think so, too, but we still get patches that write tests using 'grep' instead of FileCheck.


> Dmitri
> -- 
> main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
> (j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/
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