[llvm] r231379 - FileCheck: Document CHECK-SAME, follow-up to r230612

[Sean Silva]

Thanks!

On Thu, Mar 5, 2015 at 9:00 AM, Duncan P. N. Exon Smith <
dexonsmith at apple.com> wrote:

> Author: dexonsmith
> Date: Thu Mar  5 11:00:05 2015
> New Revision: 231379
>
> URL: http://llvm.org/viewvc/llvm-project?rev=231379&view=rev
> Log:
> FileCheck: Document CHECK-SAME, follow-up to r230612
>
> Modified:
>     llvm/trunk/docs/CommandGuide/FileCheck.rst
>
> Modified: llvm/trunk/docs/CommandGuide/FileCheck.rst
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/CommandGuide/FileCheck.rst?rev=231379&r1=231378&r2=231379&view=diff
>
> ==============================================================================
> --- llvm/trunk/docs/CommandGuide/FileCheck.rst (original)
> +++ llvm/trunk/docs/CommandGuide/FileCheck.rst Thu Mar  5 11:00:05 2015
> @@ -185,6 +185,31 @@ For example, something like this works a
>  newline between it and the previous directive.  A "``CHECK-NEXT:``"
> cannot be
>  the first directive in a file.
>
> +The "CHECK-SAME:" directive
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +Sometimes you want to match lines and would like to verify that matches
> happen
> +on the same line as the previous match.  In this case, you can use
> "``CHECK:``"
> +and "``CHECK-SAME:``" directives to specify this.  If you specified a
> custom
> +check prefix, just use "``<PREFIX>-SAME:``".
> +
> +"``CHECK-SAME:``" is particularly powerful in conjunction with
> "``CHECK-NOT:``"
> +(described below).
> +
> +For example, the following works like you'd expect:
> +
> +.. code-block:: llvm
> +
> +   !0 = !MDLocation(line: 5, scope: !1, inlinedAt: !2)
> +
> +   ; CHECK:       !MDLocation(line: 5,
> +   ; CHECK-NOT:               column:
> +   ; CHECK-SAME:              scope: ![[SCOPE:[0-9]+]]
> +
> +"``CHECK-SAME:``" directives reject the input if there are any newlines
> between
> +it and the previous directive.  A "``CHECK-SAME:``" cannot be the first
> +directive in a file.
> +
>  The "CHECK-NOT:" directive
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>
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