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[CAS] Support legacy prefix map option

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Bring back legacy prefix map option to allow an older swift-driver to
work with newer swift-frontend. For old swift-driver, it will always
send the old style prefix map option, so the new compiler needs to
support that.

rdar://164208526
This commit is contained in:
Steven Wu
2025-11-06 17:27:40 -08:00
parent a302d4e627
commit 23b42cf6c9
3 changed files with 14 additions and 1 deletions
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6
lib/Frontend/CompilerInvocation.cpp
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@@ -2519,6 +2519,12 @@ static bool ParseSearchPathArgs(SearchPathOptions &Opts, ArgList &Args,
Opts.ScannerPrefixMapper.push_back({A->getValue(0), A->getValue(1)});
}
// Handle legacy prefix map option.
for (StringRef Opt : Args.getAllArgValues(OPT_scanner_prefix_map)) {
if (auto Mapping = llvm::MappedPrefix::getFromJoined(Opt))
Opts.ScannerPrefixMapper.push_back({Mapping->Old, Mapping->New});
}
Opts.ResolvedPluginVerification |=
Args.hasArg(OPT_resolved_plugin_verification);