[PATCH] D23125: Modules: add command line option to support loading prebuilt modules on demand, without parsing any module map

[Richard Smith via cfe-commits]

rsmith added inline comments.

================
Comment at: lib/Frontend/CompilerInstance.cpp:1503
@@ +1502,3 @@
+        if (!Module || !Module->getASTFile() ||
+            std::string(Module->getASTFile()->getName()) != ModuleFileName) {
+          // Error out if Module does not refer to the file in the prebuilt
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It'd be safer to check that `FileMgr.getFile(ModuleFileName) == Module->getASTFile()` in case the filename gets canonicalized by the file manager in some way.


https://reviews.llvm.org/D23125