[PATCH] D60383: FileCheck [3/12]: Stricter parsing of @LINE expressions

[Thomas Preud'homme via Phabricator via llvm-commits]

thopre created this revision.
thopre added reviewers: jhenderson, chandlerc, jdenny, probinson, grimar, arichardson, rnk.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.
thopre added a parent revision: D60382: FileCheck [2/12]: Stricter parsing of -D option.
thopre added a child revision: D60384: FileCheck [4/12]: Introduce @LINE numeric expressions.

This patch is part of a patch series to add support for FileCheck
numeric expressions. This specific patch gives earlier and better
diagnostics for the @LINE expressions.

Rather than detect parsing errors at matching time, this commit adds
enhance parsing to detect issues with @LINE expressions at parse time
and diagnose them more accurately.

Copyright:

- Linaro (changes up to diff 183612 of revision D55940 <https://reviews.llvm.org/D55940>)
- GraphCore (changes in later versions of revision D55940 <https://reviews.llvm.org/D55940> and in new revision created off D55940 <https://reviews.llvm.org/D55940>)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D60383

Files:
  llvm/include/llvm/Support/FileCheck.h
  llvm/lib/Support/FileCheck.cpp
  llvm/test/FileCheck/defines.txt
  llvm/test/FileCheck/line-count.txt

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