[clang] [ASTWriter] Detect more non-affecting FileIDs to reduce source location duplication (PR #112015)

[Jan Svoboda via cfe-commits]

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@@ -43,7 +43,7 @@ module third {}
 // CHECK-NEXT:       "command-line": [
 // CHECK-NEXT:         "-cc1",
 // CHECK:              "-fmodule-map-file=[[PREFIX]]/second/second/module.modulemap"
-// CHECK-NOT:          "-fmodule-map-file=[[PREFIX]]/second/second/sub.modulemap"
+// CHECK-NEXT:         "-fmodule-map-file=[[PREFIX]]/second/second/sub.modulemap"
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jansvoboda11 wrote:

I think it's fairly important to not report those on command lines. On Darwin, we have one module map that includes lots of other module maps, so listing them all blows up the command line length (and is unnecessary).

https://github.com/llvm/llvm-project/pull/112015