[llvm] [FileCheck] Fix parsing empty global and pseudo variable names (PR #83667)

[Daniil Kovalev via llvm-commits]

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@@ -0,0 +1,32 @@
+a
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+; RUN: not FileCheck -color=0 -input-file %s %s 2>&1 | \
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kovdan01 wrote:

Yes, see `FILECHECK_OPTS=-dump-input-filter=all -vv -color` here: https://lab.llvm.org/buildbot/#/builders/139/builds/60549/steps/2/logs/stdio

It's also clear that colors are enabled from the failing output.

IMHO even if the bot shouldn't set this and if it should be changed, the `-color=0` is still nice to have since if a test relies on assumption that colors are disabled - we'd better have the option explicitly disabled.

https://github.com/llvm/llvm-project/pull/83667