[docs] Document pattern of using CHECK-SAME to skip irrelevant lines
authorJordan Rupprecht <rupprecht@google.com>
Tue, 4 Aug 2020 23:23:03 +0000 (00:23 +0100)
committerThomas Preud'homme <thomasp@graphcore.ai>
Wed, 5 Aug 2020 10:03:56 +0000 (11:03 +0100)
commit4963ca4658b0c4ab70f029110150878178328335
treeeffdff2d888e473cc321638a0296e04e909020f4
parent138281904ba029bc49fca34a8658a8fcd1b843aa
[docs] Document pattern of using CHECK-SAME to skip irrelevant lines

This came up during the review for D67656. It's nice but also subtle, so documenting it as an idiom will make tests easier to understand.

Reviewed By: probinson

Differential Revision: https://reviews.llvm.org/D68061
llvm/docs/CommandGuide/FileCheck.rst