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[Caching] Change swift cache key computation

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Update swift cache key computation mechanism from one cache key per
output, to one cache key per primary input file (for all outputs that
associated with that input).

The new schema allows fewer cache lookups while still preserving most of
the flexibility for batch mode and incremental mode.
This commit is contained in:
Steven Wu
2023-10-04 13:00:29 -07:00
parent fad02e3737
commit 6c3097657a
25 changed files with 1014 additions and 355 deletions
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8
lib/Frontend/ModuleInterfaceLoader.cpp
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@@ -2384,7 +2384,8 @@ struct ExplicitCASModuleLoader::Implementation {
if (!Deps.second.moduleCacheKey)
return nullptr;
return loadCachedCompileResultFromCacheKey(
CAS, Cache, Diags, *Deps.second.moduleCacheKey, Path);
CAS, Cache, Diags, *Deps.second.moduleCacheKey,
file_types::ID::TY_SwiftModuleFile, Path);
}
}
return nullptr;
@@ -2439,8 +2440,9 @@ bool ExplicitCASModuleLoader::findModule(
// FIXME: the loaded module buffer doesn't set an identifier so it
// is not tracked in dependency tracker, which doesn't handle modules
// that are not located on disk.
auto moduleBuf = loadCachedCompileResultFromCacheKey(Impl.CAS, Impl.Cache,
Ctx.Diags, moduleCASID);
auto moduleBuf = loadCachedCompileResultFromCacheKey(
Impl.CAS, Impl.Cache, Ctx.Diags, moduleCASID,
file_types::ID::TY_SwiftModuleFile);
if (!moduleBuf) {
// We cannot read the module content, diagnose.
Ctx.Diags.diagnose(SourceLoc(), diag::error_opening_explicit_module_file,