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Revert "[Caching][NFC] Using llvm::cas::CASConfiguration"

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This reverts commit 4f059033bb. The change
is actually not NFC since previously, there is a cache in the
CompilerInvocation that prevents the same CAS from the same CASOptions
from being initialized multiple times, which was relied upon when
running inside sub invocation. When switching to a non-caching simple
CASOption types, it causes every single sub instance will create its own
CAS, and it can consume too many file descriptors and causing errors
during dependency scanning.

rdar://164903080
This commit is contained in:
Steven Wu
2025-11-17 11:38:16 -08:00
parent c337446464
commit 8e68fab034
9 changed files with 23 additions and 32 deletions
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2
lib/Frontend/ModuleInterfaceLoader.cpp
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@@ -1805,7 +1805,7 @@ void InterfaceSubContextDelegateImpl::inheritOptionsForBuildingInterface(
if (casOpts.EnableCaching) {
genericSubInvocation.getCASOptions().EnableCaching = casOpts.EnableCaching;
genericSubInvocation.getCASOptions().Config = casOpts.Config;
genericSubInvocation.getCASOptions().CASOpts = casOpts.CASOpts;
genericSubInvocation.getCASOptions().HasImmutableFileSystem =
casOpts.HasImmutableFileSystem;
casOpts.enumerateCASConfigurationFlags(