cfc27fbc4b
compiletest: Use the same directive lines for EarlyProps and ignore/only/needs Currently we load each discovered test file to scan it for directives once for EarlyProps parsing, then reload and scan it once *per revision* for ignore processing. If a revision is not ignored, we then reload and scan it again during actual execution. That's a bit silly, so this PR tries to reduce the number of unnecessary file loads and line scans for directive parsing, by reusing the same collection of `DirectiveLine` values for EarlyProps and for each revision's ignores. Each individual directive still needs to be re-parsed a bunch of times, but those steps can at least avoid scanning the whole file, or having to split out names from values. --- There's more that could be done after this, such as only doing known-directive checks once per file, or embedding file paths in each `DirectiveLine`, but I decided to stop here to allow review in modest chunks. r? jieyouxu
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