================
@@ -117,14 +112,37 @@
ModuleDepCollector::makeInvocationForModuleBuildWithoutOutputs(
CI.getFrontendOpts().ARCMTAction = FrontendOptions::ARCMT_None;
CI.getFrontendOpts().ObjCMTAction = FrontendOptions::ObjCMT_None;
CI.getFrontendOpts().MTMigrateDir.clear();
- CI.getLangOpts().ModuleName = Deps.ID.ModuleName;
- CI.getFrontendOpts().IsSystemModule = Deps.IsSystem;
+
+ // Remove any macro definitions that are explicitly ignored.
+ if (!CI.getHeaderSearchOpts().ModulesIgnoreMacros.empty()) {
+ llvm::erase_if(
+ CI.getPreprocessorOpts().Macros,
+ [&CI](const std::pair<std::string, bool> &Def) {
+ StringRef MacroDef = Def.first;
+ return CI.getHeaderSearchOpts().ModulesIgnoreMacros.contains(
+ llvm::CachedHashString(MacroDef.split('=').first));
+ });
+ // Remove the now unused option.
+ CI.getHeaderSearchOpts().ModulesIgnoreMacros.clear();
+ }
+
+ return CI;
----------------
benlangmuir wrote:
This is going through `CowCompilerInvocation(const CompilerInvocation &X)`,
right? Could we add an `&&` version that steals the sub objects without
copying them? Obviously less important than avoiding the per-module copies.
https://github.com/llvm/llvm-project/pull/65677
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